Flood Management
- Introduction to Flood Management in Prince George's County
- Local Flood Hazards, Mapping, and History of Flooding
- FEMA Website
- Flood Insurance Rate Maps and Flood Insurance (NFIP, CRS, CTC, FIRMs, LOMA/LOMR)
- FEMA Floodplain Map of Prince George's County
- Elevation Certificates
- Known Floodprone Structures
- Flood Warning Systems
- Countywide Flood Damage Reduction Strategies
- Property Protection Projects (retrofitting, drainage, protecting against high wind, etc.), and Substantial Improvement/Damage
- Permitting
- GIS and Mapping Components
- Watershed Studies
- Drainage Maintenance
- Public Outreach
- Floodplain Directory of Information Services
- Hurricane Season Special Warnings
- Disaster Do’s and Don’ts
- Disasters - Prepare & Plan
- Frequently Asked Questions (FAQs)
- Download Flooding Brochure (PDF)
Introduction to Flood Management in Prince George's County
A floodplain is an integral part of the stream system. It
provides storage capacity for high flows, helps reduce the
erosive power of the stream during a flood, reduces the
discharge of sediment during high flow periods and helps flood
waters to move downstream. Floodplains also offer
opportunities for wildlife habitat which can increase the
biotic diversity of a stream. The 100-year floodplain is that
land area adjoining the stream that has a 1% or greater
probability of flooding in any given year. Floodplains provide a
stream with buffer and water quality benefits as well.
It is the policy of the Prince George's County Government
to preserve the 100-year floodplain as part of the natural
system of a stream, and to further preserve it in a natural
state in order to provide adequate storage for flood waters
and sufficient carrying capacity to safely move flood waters
downstream. Where existing structures in the 100-year
floodplain cannot be protected in an environmentally sensitive
and cost effective manner, the County may offer to acquire
them to reduce the potential for property damage and eliminate
potential obstruction of flood water. Future development is
not permitted within the ultimate 100-year floodplain. Prince
George's County has used ultimate conditions hydrology to
determine flood discharges and to map areas of the County
experiencing rapid urban and suburban growth. Ultimate
conditions hydrology and mapping uses projected land-use
conditions based on a community's zoning maps and/or
comprehensive land-use plans in determining flood discharges,
flood elevations, and corresponding areas at risk.
Prince George's County has, through the Maryland-National
Capital Park and Planning Commission, established a policy to
acquire stream valley parks throughout the County. Stream
valley park acquisition permits public ownership of the
floodplain, thus eliminating pressure for private development
and providing recreational opportunities. Stream valley parks
will continue to be an important component of the County's
recreation, open space and flood management programs.
Flood Management for Prince George's County is guided by
the following goals:
- Reduce or eliminate existing flood hazards;
- Prevent future flood hazards from developing;
- Reduce the economic losses associated with flooding
events;
- Provide for expanded recreational and aesthetic opportunities in the County;
- Restore, preserve and enhance environmental quality
wherever possible; and
- Improve the quality of life in Prince George's County.
The Floodplain Management Ordinance was adopted by the
County Council in April of 1989 and amended in 1993 to conform
with State and Federal requirements. The ordinance replaced
those portions of the County Code that dealt with floodplain
management. The previous code provisions have been deleted.
The new ordinance is modeled after an ordinance suggested by
the Maryland Department of the Environment (MDE). The Federal
Emergency Management Agency (FEMA) contracted with MDE to
review local floodplain ordinances and assure that they met
FEMA requirements for eligibility for flood insurance.
The ordinance prohibits filling or construction in the
floodplain generally, but allows for a variance under certain
circumstances, for example, to meet an important public need.
Where filling is needed within the floodplain, an equal volume
of compensatory storage must be provided. Furthermore, an
impact study is needed to ensure that the floodplain elevation
will not be increased. Revisions have been made to other
sections of the Code, such as the Subdivision Ordinance, to
bring them into conformance. The ordinance also contains
requirements for the protection of buffers, wetlands and other
natural features associated with the floodplain.
Prince George's County has been participating in FEMA's
National Flood Insurance Program (NFIP) since 1972. The
current effective Flood Insurance Rate Map (FIRM) can be
reached by clicking on the FEMA
Floodplain Map of Prince George's County link.
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Local Flood Hazards, Mapping, and History of Flooding
All waterways and bodies of water are subject to flooding –
a condition that occurs when the volume of water exceeds the
capacity of the waterway channels or when tidal waters are
pushed inland by coastal storms:
• Riverine or nontidal bodies of water are those that
drain upland areas and are not influenced by coastal and
tidal processes. In addition to rivers, nontidal bodies of
water include streams and creeks and other small flowing
waters. Flooding can also occur in localized low spots, even
if the area is not adjacent to a body of water.
• Coastal flooding affects tidal bodies of water,
including the tidal reaches of the Potomac River and the
Patuxent River in Prince George’s County. The Potomac River
is subject to tidal flooding along its entire length in the
County, and the Patuxent River is subject to tidal flooding
up to the confluence of Western Branch.
The Prince George’s County Department of Environmental
Resources recognizes and manages riverine flood hazard areas
that are designated in two ways:
• Areas identified as vulnerable to flooding from the 1%
annual chance flood (100-year floodplain) that are shown on
the County’s Flood Insurance Rate Maps (FIRMs) prepared by
FEMAs National Flood Insurance Program (NFIP); and
• Other flood maps based on studies prepared by the
County to evaluate the impact of future development. These
maps often include areas not studied by the NFIP.
The first Flood Insurance Study and Flood Insurance Rate
Maps (FIRMs) for the County were dated August 4, 1972 and
prepared by the U.S. Department of Housing and Urban
Development (a precursor agency to FEMA). Since that time,
updates to several panels have been completed. The most
recently revised and reprinted map panels are dated September
6, 1996.
Starting in the 1980s, the Department of Environmental
Resources began to obtain State grants and use County funding
to prepare more up-to-date watershed studies to delineate
floodplains. The County’s studies and maps, prepared with
detailed base map data and detailed engineering models,
account for future watershed development. They also are the
basis for the State’s regulation of nontidal waterways.
Watershed studies have been prepared for the following bodies of water:
- Piscataway Creek (adopted July 1986);
- Henson Creek (adopted July 1986);
- Western Branch of the Patuxent River (adopted July
1983);
- Tinkers Creek (adopted September 1980);
- Anacostia River;
- Folly Branch;
- Collington Branch;
- Bald Hill Branch;
- Southwest Branch;
- Charles Branch;
- Oxon Run; and
- Beaverdam Creek.
The figure below shows the extent of flooding as depicted
on the latest FEMA Flood Insurance Rate Maps. For more information
on FEMA Flood Insurance Rate Maps, how to locate your
property on a FIRM, a description of the flood zones, and
information on amendments or revisions to the FIRM, visit the section titled “Flood Insurance Rate Maps and
Flood Insurance.”
Flood Hazard History in
Prince George’s County
Prince George’s County has experienced some riverine and
stream flooding in recent decades, although sound management
of flood hazard areas and construction of flood control
projects has reduced potential losses. Notable riverine and
coastal flooding has occurred several times since 1933.
- August 1933 – This unnamed hurricane caused flooding
along the Potomac River and throughout the Chesapeake Bay;
the Livingston Bridge on Piscataway Creek also flooded.
- October 1954 – Hurricane Hazel raised water levels in
the Potomac River Basin; statewide, the storm caused 6
deaths and an estimated $11.5 million in damage.
- August 1955 – Hurricane Connie caused riverine flooding
that inundated a large commercial section of Upper Marlboro
and flooded several buildings along Piscataway Creek; surge
reached 4 feet above normal at the confluence of Patuxent
River with Western Branch.
- August 1971 – Heavy rain and flooding.
- June 1972 – Tropical Storm Agnes; this storm of record
brought high water levels along the Patuxent and Potomac
River basins; statewide, it caused 19 deaths and $80 million
in damage; in Prince George’s County, the storm caused more
than $10 million in damage (see box).
- September 1975 – Hurricane Eloise; heavy rain and
flooding; Prince George’s County was included in the major
disaster declaration.
- September 1978 – Hurricane David; Prince George’s County
was included in the major disaster declaration.
- November 1985 – Hurricane Juan affected the Potomac
River Basin; Prince George’s County was included in the
major disaster declaration.
- September 1996 – Hurricane Fran; remnants of this large
storm caused flooding along the Potomac River Basin; Prince
George’s County was included in the major disaster
declaration.
- September 2003 – Hurricane Isabel produced widespread
wind damage, power outage, and localized flooding.
- June 2006 – Heavy rain and flooding.
The Legacy of Tropical Storm
Agnes |
Leaving behind more than $10 million in damage in
Prince George’s County and the City of Laurel, Tropical
Storm Agnes moved through the area on June 21-22, 1972.
Newspaper reports described the aftermath:
- $1 million in damage to public buildings,
roads and bridges.
- Worst hit areas included along Chillum Road,
Lewisdale, the Green Meadows subdivision in
Hyattsville, Lakeland section of College Park,
Brentwood, the Adelphi Mill area on Riggs Road, Oxon
Run Drive, Tucker Road Bridge, and Water Street Bridge
in Upper Marlboro.
- More than 1,800 people were served at
shelters.
- Home foundations were braced with sandbags,
propane gas tanks became detached, and basements were
flooded.
- County personnel evaluated livability of
damaged structures.
- WSSC reported erosion damage to some water
supply mains; low-lying sewage collection and pump
facilities were damaged.
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Flood Insurance Rate Maps and Flood Insurance (NFIP, CRS, CTC, FIRMs, LOMA/LOMR)
National Flood Insurance Program (NFIP) Information
In 1968, Congress created the National Flood Insurance
Program (NFIP) in response to the rising cost of
taxpayer-funded disaster relief for flood victims, and the
increasing amount of damage caused by floods. The NFIP makes
Federally-backed flood insurance available in communities that
agree to adopt and enforce floodplain management ordinances to
reduce future flood damage. National Flood Insurance is
available in more than 20,000 communities across the United
States and its territories.
The NFIP is managed by the Federal Emergency Management
Agency's Federal
Insurance Administration and Mitigation
Directorate. The Federal Insurance Administration manages
the insurance component of the NFIP, and works closely with
FEMA's Mitigation Directorate, which oversees the floodplain
management aspect of the program.
The NFIP, through partnerships with communities, the
insurance industry, and the lending industry, helps reduce
flood damage by nearly $800 million a year. Further, buildings
constructed in compliance with NFIP building standards suffer
77 percent less damage annually than those not built in
compliance. Every $3 paid in flood insurance claims saves $1
in disaster assistance payments.
The NFIP is self-supporting for the average historical loss
year, which means that operating expenses and flood insurance
claims are not paid for by the taxpayer, but through premiums
collected as flood insurance policies. For more information on NFIP, visit the FEMA website at http://www.fema.gov/about/programs/nfip/index.shtm.
Top 10 Facts Everyone Should Know About the National Flood
Insurance Program
- Everyone lives in a flood zone.
- Flood damage is not covered by homeowners
insurance policies.
- You can buy flood insurance no matter what your
flood risk.
- There is a low-cost policy for homes in low to
moderate risk areas.
- Flood insurance is affordable.
- Flood insurance is easy to get.
- Contents coverage is separate, so renters can
insure their belongings too.
- Up to a total of $1 million of flood insurance
coverage is available for non-residential buildings and
contents.
- There is usually a 30-day waiting period before
the coverage goes into effect.
- Federal disaster assistance is not the answer.
1. Everyone lives in a flood zone.
- You don't need to live near water to be flooded.
- Floods are caused by storms, melting snow,
hurricanes, and water backup due to inadequate or overloaded
drainage systems, dam or levee failure, etc.
2. Flood damage is not covered by homeowners policies.
- You can protect your home, business, and
belongings with flood insurance from the National Flood
Insurance Program.
- You can insure your home with flood insurance for
up to $250,000 for the building and $100,000 for your
contents.
3. You can buy flood insurance no matter what your flood
risk.
- Whether your flood risk is high, medium, or low,
you can buy flood insurance as long as your community
participates in the National Flood Insurance Program.
- It's a good idea to buy, even in low or moderate
risk areas: approximately 25 percent of all flood insurance
claims come from low to moderate risk areas.
4. There is a low-cost policy for homes in low to moderate
risk areas.
- The Preferred Risk Policy is available for just
over $100 a year.
- You can buy up to $250,000 of coverage for your
home and $60,000 of coverage for your contents.
5. Flood insurance is affordable.
- The average flood insurance policy costs a little
more than $300 a year for about $100,000 of coverage.
- In comparison, a disaster home loan can cost you
more than $300 a month for $50,000 over 20 years.
6. Flood insurance is easy to get.
- You can buy NFIP flood insurance from private
insurance companies and agents; call yours today!
- You may be able to purchase flood insurance with a
credit card.
7. Contents coverage is separate, so renters can insure
their belongings too.
- Up to $100,000 contents coverage is available for
homeowners and renters.
- Whether you rent or own your home or business,
make sure to ask your insurance agent about contents
coverage. It is not automatically included with the building
coverage.
8. Up to a total of $1 million of flood insurance coverage
is available for non-residential buildings and contents.
- Up to $500,000 of coverage is available for
non-residential buildings.
- Up to $500,000 of coverage is available for the
contents of non-residential buildings.
9. There is usually a 30-day waiting period before the
coverage goes into effect.
- Plan ahead. Don't be caught without flood
insurance when a flood threatens your home or business.
10. Federal disaster assistance is not the answer.
- Federal disaster assistance is available only if
the President declares a disaster.
- More than 90 percent of all disasters in the
United States are not Presidentially declared.
- Flood insurance pays even if a disaster is not
declared.
Source: FEMA: NFIP
Community Rating System (CRS)
The Community Rating System (CRS) is a program started in
1990 under the NFIP. The program was designed to recognize and
encourage community floodplain management activities that
exceed the minimum NFIP standards. Under the CRS, flood
insurance premium rates are adjusted to reflect the reduced
flood risk resulting from community activities that meet the
three goals of the CRS: (1) reduce flood losses; (2)
facilitate accurate insurance rating; and (3) promote
awareness of flood insurance.
There are ten CRS classes: class 1 requires the most credit
points and gives the largest premium reduction, while class 10
is the entry level into the CRS and carries no premium
reduction. Prince George's County is currently rated Class 5
under the CRS, which translates to a 25% reduction in flood
insurance rates for local residents and businesses. The Class
5 rating places Prince George's County in the top 2% of over
1000 communities nationwide that participate in the CRS. For
more information on the CRS, visit the FEMA web site at http://www.fema.gov/business/nfip/.
The Cooperating Technical Community (CTC) Activities in the County
With GIS-based H&H models, the County has received
grant funding from FEMA under two separate programs to
automate the floodplain information in the County: the
Cooperative Digital Flood Mapping Program and the Cooperating
Technical Community (CTC) Program. Under the CTC Program, the
County is proposing to conduct several additional activities
using these GIS models. Specifically, these activities are:
- Completed a countywide GIS-based 2-ft topography using the
newly developed technology such as LIDAR (total cost is
approximately $400,000). FEMA, the Maryland State Highway
Administration, the Maryland-National Capital Park &
Planning Commission and the County have already agreed on
cost-sharing;
- Re-do the entire FEMA study (normally referred to as the
Flood Insurance Study) using our GIS-based hydrologic and
hydraulic (H&H) models. The total cost will be
approximately $250,000. This cost includes the new FEMA
floodplain mapping in digital form.
To date, the County has submitted to FEMA the following Watershed Studies: Western Branch; Charles Branch; Anacostia River; Henson Creek; Piscataway Creek; and Patuxent River mainstem;
- The County will conduct a technical review of all FEMA
map amendment (LOMA) and map revision (LOMR) requests and
then update the changes. The County will charge the
developer a review fee that is same as the fee schedule currently employed by FEMA;
- The County will continue to conduct floodplain studies
for developers using our GIS-based H&H models. The
results of the studies will be incorporated into the LOMA or
LOMR process (the County will charge approximately $3,000
for each study);
- The County has converted the GIS-based H&H models (WMS-Watershed Modeling System) into a more user
friendly environment such as ARC-VIEW to allow any
jurisdictions that have standard PCs to easily utilize these
models. The cost for this conversion was approximately
$100,000; With this new floodplain database, the County will
provide floodplain inquiry services to homeowners, insurance
companies, and lending institutions for a minimal fee. The County is in the process of converting the new GIS-based models; and
- The County will conduct a detailed Damage Assessment
Analysis after a flood event using this GIS-based H&H
models. FEMA will need to provide the County with the
necessary training.
Is Your Property in a Flood Hazard Area?
Special
Flood Hazard Areas are areas located within the 100-year
floodplain, defined as any area that has a one percent chance
of flooding in any given year. Smaller scale floods (50-year
and 10-year) have a greater chance of occurring in any given year
and can also pose a significant flood hazard to persons and
property in close proximity to channels and streams.
Additionally, floods larger than the mapped 100-year event can
occur.
First and foremost, you should become informed as to the flood
hazard potential on your property. The Prince George’s County
Department of Public Works and Transportation will review
floodplain information and studies available in their files
to determine the location of your property with respect to
the floodplain as established in the Federal Emergency
Management Agency (FEMA) Flood Insurance Rate Maps. You may
contact the Prince George’s County Department of Public Works
and Transportation at (301) 883-5777 for assistance
with this information.
Any information provided by the County does not constitute
an assurance or representation that flooding may or may not
occur on your property during any given event, but should
assist you as a general matter in determining the need for
flood insurance by assessing the extent of flooding potential
on your property.
Flood Insurance Rate Maps (FIRMs)
The FEMA Flood Insurance Rate Maps (FIRMS) are the official
maps showing the community’s Special
Flood Hazard Areas . These maps are utilized as the basis
for local floodplain management regulations and mitigation
efforts, to assess flood risk, and to determine if flood
insurance is required for structure(s) on a property. Although
these maps are not property specific (e.g. no lot boundaries),
by using the major roads and flooding sources for reference,
users can get an idea of the flood risks in their area. These
maps are available to view online at the Map Service Center ( msc.fema.gov ) or at the Prince George’s County Department of Environmental
Resources' offices in Largo, Maryland. Additionally, the Map Service
Center site has an address search feature that allows a user
to find the correct FIRM panel using their address in an
on-line search tool.
For additional assistance with using the FIRMs, please
contact the FEMA Map Assistance Center at 1-877-FEMA MAP,
visit the following website ( www.fema.gov/hazard/map/firm.shtm ) , or contact
Yanping Zhang at (301)883-5787 or (301)883-3311
Letters of Map Amendment and Revision (LOMA/LOMR)
In some cases, a lender determines that a property is in
the Special Flood Hazard Area (SFHA), or 100-year floodplain,
and requires the owner to purchase flood insurance. If the
property owner wishes to dispute the fact that they are in the
SFHA, they can apply for a Letter of Map Amendment (LOMA) or a
Letter of Map Revision Based on Fill (LOMR-F), if fill
placement is the basis of the request.
Forms for this application process may be found on FEMA’s
website at www.fema.gov/plan/prevent/fhm/frm_form.shtm .
You may also access tutorials designed to assist in the
preparation of these forms at www.fema.gov/plan/prevent/fhm/ot_main.shtm . This tutorial will guide you through the application and
provide tips on filling out the forms.
Upon receiving a completed application, FEMA reviews
property-specific information and makes a final flood zone
determination for the property. Once an application is
received with all the required supporting data, the LOMA or
LOMR-F is normally issued within 60 days. If the LOMA or
LOMR-F removes the SFHA designation from the property, it can
then be presented to the lender as proof that there is no
Federal flood insurance requirement for the property. Bear in
mind that even though a LOMA or LOMR-F may remove the Federal
requirement for flood insurance, a lender retains the
prerogative to require flood insurance.
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Elevation Certificates
Elevation certificates are prepared by surveyors and document the
ground elevation, floor elevation, and general building
characteristics for a structure. The County has approximately 763
elevation certificates on file electronically and available to the
public. Property owners may use the certificates for flood insurance
rating purposes, and the County uses the detailed information to
evaluate mitigation options. Elevation certificates are available
for the structures listed in the following table. For more
information on elevation certificates please call Mike Colgan at (301)883-5944 or (301)883-3311.
Links
to Elevations Certificate (PDFs)
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Known Floodprone Structures

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Flood Warning Systems
Flood Warning System at Western Branch
The Western Branch Comprehensive Watershed Management Plan
was prepared by the Prince George's County Stormwater
Management Technical Group in 1981. Even though the US Army
Corps of Engineers had constructed a floodway through Upper
Marlboro to carry flood waters away, there are 73 commercial
structures, 33 residential structures, and 39 garages/sheds
subject to flooding in the Upper Marlboro Area. To date, no
additional flood control devices have been proposed or planned
to mitigate these known flooding hazards. A consulting
engineering firm, Engineering Technology Associates (ETA), has
completed a hydrologic and hydraulic analysis or watershed
study of Western Branch. This study was not designed to
produce or evaluate possible solutions that will minimize
flooding problems in the Upper Marlboro area. Rather, this
study was meant to determine the flood levels in the Western
Branch at Upper Marlboro. This analysis will form the
technical basis to be used by the County to select and
evaluate possible solutions to the flooding problems in the
Watershed. Until the final study and selection of alternatives
is completed and ready for implementation, it would be prudent
to have an interim program for limiting the extent of flood
damage that may occur. Such an interim program to limit flood
damage has been proposed in the form of a flood warning
system. The Flood Warning System would provide for the
monitoring of rainfall and stream flow data to determine if a
flood is imminent. The Flood Alerting System will allow the
County to use the information gained with the Flood Warning
System to alert those in danger that the danger exists.
Preliminary analysis of how the flood warning system would
work indicates that Upper Marlboro could reasonably expect ten
hours of warning before a flood. Inasmuch as the there are
several auto dealerships in and near the 100-year floodplain
on Maryland Route 301 in Upper Marlboro, many hundreds of
thousands of dollars in flood damage could be avoided simply
by moving the cars out of danger.
When completed, the flood warning system will be integrated
into the County's Emergency Management System. In this way,
when flood waters begin to rise, County public safety
officials who use the Emergency Management System will have
information as soon as it becomes available and will have a
comprehensive understanding of the status of the flood.
The U.S. Army Corps of Engineers has completed a study of
the efficacy and desirability of installing a flood warning
system in Western Branch. The study indicated that such a
flood warning system is feasible and desirable. The flood
warning and alerting system for the Western Branch has been
designed and partially implemented and may be a model for
other watersheds within the County. The flood warning and
alerting system will continue to provide an additional margin
of safety and will be retained as a permanent feature of the
Western Branch Flood Management System.
Prince George’s County has received state grant funding for the upgrade of the Western Branch Flood Warning System. It will be in full operation June 1, 2008 and may be viewed online at http://afws.erh.noaa.gov/afws/index.php?gtype=precip&wfo=lwx
Note: After accessing the National Weather Service web site, please locate Prince George's County on the map and click on any point within the County to retrieve countywide precipitation/stage data.

Flood Warning System near/at City of
Laurel
Due to severe and frequent flooding problems occurring in
low lying areas of the City of Laurel and areas such as
Woodland Grove Apartments (immediately outside the City
limits), a separate flood plan was developed for this area.
The plan included the services of the Community Alerting
Network to provide telephone notification to impacted
residents and businesses. This system has been implemented
through the cooperative efforts of the Washington Suburban
Sanitary Commission (WSSC), the City of Laurel and the Office
of Emergency Management.
Flood Warning System at Anacostia
River
According to a preliminary Anacostia River Watershed Study
prepared by Greenhorne and O'Mara, Inc. in 1994, more than
3,000 structures may be floodprone within the Prince George's
County portion of the Anacostia Watershed. So far, no
effective flood control measures have been proposed to
mitigate these flooding hazards. Given the fiscal constraints
of flood management in the Anacostia, a flood warning system
is a cost effective flood hazard mitigation measure. The
County is working with the U. S. Army Corps of Engineers to
develop the flood warning system for this watershed. The flood warning system at Anacostia River is now in full operation and may be viewed online at http://afws.erh.noaa.gov/afws/index.php?gtype=precip&wfo=lwx.
Note: After accessing the National Weather Service web site, please locate Prince George's County on the map and click on any point within the County to retrieve countywide precipitation/stage data.

Wide Area Rapid Notification (WARN)
Prince George’s County residents will receive immediate
notification of emergencies through a new state-of-the art
communications system operated by the County’s Office of
Homeland Security. This is possible with the Wide Area Rapid
Network (WARN) system.
The computerized system
allows County public safety agencies to transmit a wide range
of public safety information messages rapidly and instantly to
residents. WARN goes beyond traditional systems to instantly
communicate with as many as 10,000 residents per minute. The
internal system intuitively converts text messages to voice,
allowing notification to multiple devices, including phone
lines and text messaging devices.
The residents
of Prince George’s County are now only a phone call away when
they need to get important information into their hands. WARN
allows the Office of Homeland Security to keep in touch during
localized or countywide emergencies. The ability to alert
communities instantly and get County personnel into action
fast can make a critical difference in public safety.
WARN at a glance:
- WARN is a suite of emergency products for Communications
and Information Continuity, offering command and control by
and between government, public safety agencies and other
vital public and private sector groups. The system can
provide notification of Homeland Security and health
emergencies, hazardous material/chemical spills, accidents,
fires, and floods. The system can be used for meeting
announcements, the status of government, treatment and
vaccination coordination efforts, and general alerts.
- WARN Broadcast (Public) allows instant and pinpointed
public notification to all citizens using a predetermined
grid or mapped database for a geographic area. The system
allows instant calling for a wide range of public
informational and safety purposes.
- WARN Command is a more specialized version of WARN and
is used by public safety command and control centers for
business continuity. The system, which includes all of the
power of WARN Broadcast plus communication escalations,
connects to every voice and text device and facilitates
message cascading and call bridging.
- WARN Geographical Information System uses geographical
maps to issue instant notifications to the public based on
geographic location.
In the event of a major flood or other flood-related
hazard, individuals registered in the system are notified via
phone, fax, e-mail, or pager. If you would like to be added to
our database, please fill in the form below. You may include
more than one contact number or e-mail address. If you decide
to add your contact numbers to our database, please provide us
with your name and address so that we can associate your
number with your address.
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Countywide Flood Damage Reduction Strategies
Flood Study Findings
The multi-agency Stormwater Management Technical Group has
completed a fifteen-year study effort to define the extent of
the major flooding problems in the County. The study shows
that approximately 4,000 structures are flood prone in a
100-year storm event. Much of the flooding is concentrated in
the older, highly-urbanized inner beltway communities targeted
for revitalization.
Countywide Comprehensive Flood Damage Reduction
Strategy
With the identification of these major flooding problems, the County is faced with the dilemma of how to protect public safety and welfare and, at the same time, continue to maintain an acceptable level of traditional services at a reasonable cost. The 3,000 residential flooding problems could require more than $100 million dollars and decades to correct. The County’s strategy to address flood conditions include: evaluating flood mitigation alternatives; recommending the most suitable flood mitigation alternatives; performing a preliminary design of the solutions for those major problem areas; seeking Federal and State grants for project construction; and develop a long-term flood reduction program for the County. A public education program, flood warning systems, and flood proofing and acquisition of the most severely flood prone homes are also potential options for reducing flood damage. Design work will also proceed on the most severely effected flooding areas.
Prince George's County Hazard Mitigation Plan (PDF)
Flood Damage Reduction Components Commencing in
FY1995
Adequate funding has been appropriated in FY1995 Capital
Improvement Project (CIP) to conduct planning and design for
Phase I of the implementation of the Plan. However, further
implementation of the Plan, including construction of this
phase, will be subject to the availability of funding. Phase I
has two components:
A. Solve Isolated and Severe Residential Flooding Problems
- Involves the acquisition or flood proofing of 23 homes at
a cost of $2.7 million.
B. Solve The Ten Most Severe Flooding Problems First
A priority system was developed based on depth and
frequency of flooding and number of floodprone structures
within a geographic area (see "Prioritization
Criteria/Schedule of Implementation" in Section III). The 10
highest priority problems to be addressed first are shown
below with a total cost ranging from $40 million to $60
million. These projects account for approximately 50% of the
total number of floodprone structures countywide.
- Anacostia Levee Improvements. Priority areas 1, 4, and 6
- protects 1,363 structures;
- Northeast Branch - East West Highway. Priority area 2 -
protects 191 structures;
- Northeast Branch - Bladensburg. Priority area 3 -
protects 58 structures;
- Oxon Run - Forest Heights. Priority area 5 - protects 43
structures;
- Beaverdam - Landover. Priority area 7 - protects 40
structures;
- Paint Branch - Cherry Hill Road. Priority area 8 -
protects 18 structures;
- Indian Creek - U. S. Route 1. Priority area 9 - protects
29 structures; and
- Northwest Branch - East West Highway. Priority area 10 -
protects 92 structures.
Recommended Future Actions
A. Nonstructural Flood
Damage Reduction Measures
- Although the County will not begin work on structural
solutions for lower priority problems for some time,
existing nonstructural flood damage reduction programs will
still continue. These programs include: technical assistance, low cost flood
insurance, public education, emergency management
assistance, improved flood warning systems, research and
development of new technologies,; development review,
floodplain regulation and assessments of redevelopment and
future land use impacts.
- B. Continue to Conduct and Update Watershed Management
Plans
- To date, plans have been produced for Western Branch,
Piscataway Creek, Henson Creek, Charles Branch, and Oxon
Run. However, the plans for Oxon Run and Charles Branch have
not been adopted by the County Council. The Oxon Run study
will be ready for adoption by the County Council in the near
future. Most of the problems in Piscataway Creek and Henson
Creek as well as approximately 40% of the problems in
Western Branch have been corrected. The Anacostia River
study has the hydrology and hydraulics portion completed.
The Beaverdam Creek plan is under preparation and is
scheduled to be completed in 18 months; however, the
hydrology and hydraulics portions are completed.
- C. Continue All Existing Programs at Current Service
Levels
- Maintain capacity to address problems not specifically
identified in the comprehensive studies.
- D. Funding Challenges (debt service, maintenance and
operations)
Using existing funding and staff, it will take 40 years to
completely address the problems. This is too slow a response
given the hazards involved. A better goal would be to
gradually expand the County's capacity to address these
flooding problems eventually resulting in a growth of flood
management capital expenditures from the current $5 million
dollars to approximately $10 million dollars each year. At
that program level of expenditure, these major flooding
problems would be addressed in 20 years. The cost of the
construction to mitigate the flooding for the top 10 priority
areas and the remaining problem areas can be funded from the
following sources. However, none of the above actions deals
directly with the 980+ commercial/industrial structures.
- Obtain State and Federal grants.
- $10 million in Federal grants and $2 million in State
funding may be available. Additional State and Federal
grants could become available through appropriate Federal
and State legislation.
- Prioritize program objectives.
- Require reduced funding for other programs such as
regional program, priority III program, etc.
- Restructure plan review fees and fee-in-lieu amounts;
less than $1 million may be available from this source.
- Impose Ad valorem tax increase and bond sales.
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Property Protection Projects (retrofitting, drainage, protecting against high wind, etc.), and Substantial Improvement/Damage
In some cases, retrofitting existing buildings or regrading
a yard can help reduce the potential for flood damage to
structures and their contents. Retrofitting techniques include
elevating buildings above flood levels, wet or dry
floodproofing (commercial structures only), and installing
backflow preventers to protect floors and contents from sewer
backups. A building permit may be required for retrofitting
and structural projects.
There are also temporary measures that can help to protect
your property during a flood event. You can plan ahead about
where and how you will move furniture out of harm's way; keep
materials like sandbags, plywood, plastic sheeting and lumber
handy for emergency waterproofing; and clear brush and debris
away from storm drains and ditches so water can drain away
from the structure.
The following guides contain more information on protecting
your property:
- “Residential Drainage: A Homeowner’s Guide to Drainage
Problems and Solutions” available from Prince George’s
County. This free guide can be obtained by calling Paul DeSousa
at (301)883-5871 or (301) 883-5832
- "Homeowner's Guide to Retrofitting: Six Ways to Protect
Your House from Flooding" (FEMA Publication #312), includes
information on protecting a structure from flooding and
information about available financial assistance. This free
guide can be obtained by calling 1-800-480-2520 or online at www.fema.gov/irl/viewRecord.do?id=1420 .
For additional questions about these types of projects, or
for information on permitting, please contact the Prince
George’s County Department of Environmental Resources at
(301)883-5776.
Substantial Improvements
Homeowners who are planning substantial improvements to
their structure should contact the Permits and Review Group
for a residential building permit. Elevation or floodproofing
may be required if you plan to substantially improve your
existing structure (the cost of the improvement or add-on is
50% of the value of the existing structure).
If your property is substantially damaged (50% of the value
of the building), Federal regulations may require you to
elevate or floodproof before you can rebuild. The document
titled “Answers to Questions about Substantially Damaged
Buildings” (FEMA-213, May 1991) will help answer questions on
this topic and can be obtained free by calling 1-800-480-2520
or by going online to http://www.fema.gov/hazard/flood/pubs/lib213.shtm .
For additional questions about substantial improvements, or for
information on permitting, please contact Paul DeSosa at (301) 883-5871 or (301) 883-5832.
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Permitting
Qualified County staff are available at the Permit and Review Group to discuss your options and to help you plan and build a safe project while complying with the County Floodplain Management Ordinance.
Building permits ensure safe construction inside and outside floodplains. The Prince George’s County permitting process is designed to ensure that all construction in Prince George’s County is safe. A permit is required for all new construction and, most of the time, you must obtain a permit for repairing or replacing existing features. Before you begin construction or add-on to an existing building, find out which permits are required by contacting the Permit and Review Group.
In addition to regular building permits, special regulations apply to construction in floodways and the floodplain. No construction, including filling, is allowed in the mapped floodway without an engineering analysis that shows the project will not increase flood damage elsewhere. Any activity outside the floodplain but within a natural or man-made watercourse also requires a permit.
Homeowners who are planning substantial improvements should contact the Permit and Review Group for a residential building permit. Elevation or
flood proofing may be required if you plan to substantially improve your existing structure (the cost of the improvement or add-on is 50% of the value of the existing structure). If your property is substantially damaged (50 percent of the value of the building), Federal regulations may require you to elevate or
flood proof before you can rebuild.
To report illegal floodplain development or to verify that proper
construction permits have been issued for a project, contact the
Prince George’s County Department of Public Works and Transportation at
(301) 883-5777. An inspector will investigate.
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GIS and Mapping Components
GIS-based Floodplain Submittal
The procedure/required information to request a floodplain study to be conducted by the County is GIS-based Floodplain Submittals summarized as follows:
Request in writing that a floodplain study be conducted by the County using the Geo-STORM models with the property boundary (lot/parcel) highlighted on a tax map or other map which clearly indicates the area of interest. The address for sending the request is:
Program Support Section
Environmental Services Group
Department of Environmental Resources
9400 Peppercorn Place, Suite 610
Largo, Maryland 20774
Once a letter is received, along with the floodplain study fee (see Chapter 2 of the County's
Storm water Management Design Manual for Fee Schedules), the request will be logged in and a 2-week turnaround time is anticipated, unless there are extenuating circumstances or information is missing which precludes the study from being completed.
A County engineer will review the original request. In some cases, additional information may be required for the study to be completed. The County engineer will notify the applicant of any missing information. The existing or proposed stream crossing information necessary to complete the study is:
- Road profile;
- Minimum road elevations;
- Number of pipes;
- Pipe/culvert dimensions;
- Pipe material and type;
- Upstream and downstream maximum low chord elevations of each pipe;
- Upstream and downstream stream invert elevations of each pipe;
- Length of pipe/culvert;
- Number of piers;
- Pier shape;
- Width of piers;
- Headwall or wingwall type;
- Federal Highway Administration chart number for the culvert; and
- Federal Highway Administration scale number for the culvert.
The information provided must be surveyed and tied into existing County topography. In addition, if there is a proposed stream crossing, the location should be clearly shown in the plan view.
If the study involves a balance of cut and fill, the area of cut as well as fill must be clearly defined.
Once a study is complete, a report will be sent to the applicant with calculations, cross-section locations and floodplain elevations provided.
If the floodplain elevations are determined based on the County's GIS topography, a freeboard will be added. However, if the applicant provides more detailed topography, no freeboard will be added.
The floodplain will need to be delineated (by the applicant) on a detailed site plan and submitted to the Permits and Review Group of the Department of Environmental Resources for review and approval.
Note: Both FEMA and MDE will accept the County approved GIS-based floodplain.
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Watershed Studies
Under Prince George's County Code Subtitle IV, Group 4, the Department of Environmental Resources has the responsibility to conduct watershed studies in order to:
- Determine the magnitude and frequency of potential flood events based on existing conditions;
- Determine the magnitude and frequency of potential flood events based on development that is planned for the future;
- Define the possible alternative management techniques to control floods and minimize flood damage; and
- Identify appropriate stormwater management strategies to alleviate the water quality impacts of land development and stream channel erosion and assist in the attainment and maintenance of water quality standards consistent with Federal, State and County programs and regulations.
The Stormwater Management Technical Group is an interagency technical group consisting of representatives from the Department of Environmental Resources and the Maryland-National Capital Park and Planning Commission, which has been formed to study watersheds in the County. Under the supervision of the Stormwater Management Technical Committee, the technical group has the responsibility of conducting technical studies that achieve the above mentioned goals. These technical studies include analysis of existing and planned land use, watershed hydrology, stream hydraulics, topographic analysis, evaluation of flood hazard mitigation alternatives, pollutant loading analysis, analysis of various water quality control techniques, wetland studies and the National Pollutant Discharge Eliminate System (NPDES) Program.
The evaluation of flood hazard mitigation alternatives includes the following:
- Analysis of the runoff characteristics of both existing and planned development conditions in order to assess the impact of future land development and to aid in the development and evaluation of alternative land use patterns,
- Flood insurance;
- Flood proofing;
- Elevation of structure;
- Zoning and local land use regulations;
- Flood warning systems;
- Acquisition of flood prone structures;
- Stormwater management;
- Bridge and culvert improvement;
- Channelization or channel modification;
- Floodwalls;
- Levees;
- Retention/detention structures;
- Stream relocation;
- Stream enclosure; and
- Combinations of the above.
The above alternatives are evaluated based on the following criteria:
- Level of protection of mitigation provided;
- Physical, legal and financial constraints;
- Environmental impacts, including disturbance of wetlands, benefits to water quality, affect on aesthetics;
- Public health and safety; and
- State and Federal permit requirements.
A number of watershed studies have been completed and adopted by the County Council. These watershed studies are:
- Tinkers Creek (adopted in September, 1980);
- Western Branch (adopted in July, 1983);
- Piscataway Creek (adopted in July, 1986); and
- Henson Creek (adopted in July, 1986).
Other watersheds studies which have been completed are:
- Folly Branch;
- Bald Hill Branch;
- Southwest Branch;
- Collington Branch;
- Charles Branch;
- Oxon Run;
- Anacostia River; and
- Beaverdam Creek
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Drainage Maintenance
Drainage Maintenance
The County Office of Highway Maintenance is responsible for a wide range of activities, part of which is pipe repair and replacement; ditch and channel maintenance; inlet and drainage pipe cleaning; stormwater management facility maintenance; and maintenance of various flood control facilities.
The following activities are specifically related to maintaining storm drainage and free flowing streams:
- Floodplain maintenance (cutting, mowing and weeding of various sites);
- Cleaning of streams and other stormwater maintenance sites (removal of debris, sediment and materials foreign to the natural vegetation);
- Application of herbicides along improved channels and within pumping stations to aid in vegetation management; and
- Cleaning County-owned and maintained earthen and concrete channels to remove obstructions, cut out heavy woody growth, and perform repairs.
Another important aspect of drainage maintenance is the inspection program. Each year more than 2,400 service requests are received from County residents. Inspectors respond within three working days, unless an emergency is reported, in which case the response is immediate. After high water events, especially if water overtops a road or bridge, an inspection is performed to determine if maintenance and repairs are warranted. A 24-hour emergency on-call program covers emergency service requests, and flood control and pumping station responses.
For questions regarding drainage maintenance, or to report a drainage problem, please contact the Office of Highway Maintenance Customer Service Office at (301) 499-8520. Further information can be found online at http://www.co.pg.md.us/Government/AgencyIndex/DPW&T/FAQ/storm_drainage.asp?nivel=foldmenu(2)
Flood Control Facility Maintenance
In the 1940s, the U.S. Army Corps of Engineers constructed the Anacostia Flood Control Project. To manage drainage on the land-side of the levees, the Corps installed four pumping stations. The County operates and maintains the pumping stations, and in coordination with the Corps, conducts an annual inspection of the levees, floodway channel and pumping stations. The County is responsible for maintenance, including mowing, vegetation control, debris removal, and stabilization of erosion.
In addition to maintaining the Anacostia flood control project, the County owns, manages, and maintains several non-Federal flood control projects:
- Sligo Creek flood control levee, built by the Washington Suburban Sanitary Commission in 1973;.
- Northeast Branch flood and erosion control channelization (above East-West Highway), built by the Washington Suburban Sanitary Commission in 1976;
- Henson Creek flood control levee and channelization near Morningside, built by the Washington Suburban Sanitary Commission in 1972;
- Oxon Run flood control levee near Green Valley Drive, built by the Washington Suburban Sanitary Commission in 1982;
- Oxon Run tributary floodwall, built by the County to protect homes and a school (completed 2004); and the
- Northeast Branch flood control levee near Allison Street, built by the Washington Suburban Sanitary Commission.
Drainage Problems
One of the responsibilities of the Environmental Services Group (ESD) is to respond to citizen complaints regarding drainage problems. Drainage complaints range in nature from property flooding to home flooding and include such concerns as erosion and problems associated with sump pump discharges. Groundwater-associated problems are investigated with remedial actions suggested for homeowners, along with the provision of a residential drainage manual.
ESD investigates an average of 500 complaints per year, some of which evolve into corrective projects. Approximately 45 new drainage projects are initiated each year as a result of either homeowner complaints, referrals by other agencies, or requests by County Council Members.
If you are experiencing drainage problems, please call the Paul
DeSousa at(301)883-5871 or (301) 883-5832 for assistance.
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Public Outreach
As part of its overall floodplain management program, the County provides a number of services to local residents and businesses. These services include the following:
- Public assistance with inquiries about FEMA flood zones and floodplains generally;
- Proclamation from the County Executive and Council declaring June to be "Flood Awareness Month" with tips on flood safety and where to get additional information; airing of a local flood management video on County Cable; displays in public libraries on flood awareness, flood safety and related information;
- Flood Protection Library – Local libraries have information on flood mitigation and insurance (materials include local flood studies and contact information, as well as "generic" flood information materials from FEMA);
- The County publicizes the availability of floodplain information with lenders, realtors, insurance agents and the general public needing flood zone determinations for mortgage lending and insurance rating. In addition, information on floodplains generally, floodplain regulations, flood safety tips, natural and beneficial significance of floodplains and similar information is disseminated through a variety of outlets including: Stream Teams Workshops, county fair display, various public outreach events held throughout the year, library displays and holdings, press coverage in the local paper, county cable TV, and DER press release;
- Flood Warning Program - The County has a comprehensive Flood Warning Program for Western Branch and Anacostia River, which includes a state-of-the-art stream gauge network and flood warning system;
- Flood Protection Assistance - The County offers technical assistance to residents with drainage and flooding problems. In addition, a number of capital projects are undertaken to mitigate for potential flood events. Capital projects include acquisition of floodprone structures, floodproofing, and construction of drainage improvement projects;
- Development Review Activities – DER reviews development proposals to ensure compliance with relevant floodplain, stormwater management and grading ordinances to protect the health, safety and welfare of local residents and businesses; and
- Maintenance of Stormwater Management Facilities – All ponds and stormwater management facilities that are publicly owned, are maintained by the County's Department of Public Works & Transportation.
For more information about flood management, flood safety tips
and flood insurance, contact Yanping Zhang at (301) 883-5787 or(301) 883-3311. For information on the National Flood Insurance Program, contact the Federal Emergency Management Agency (FEMA) at (800) 427-4661.
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Hurricane Season Special Warnings
Hurricane Season and Flood Awareness
The warm weather of summer brings with it the start of another change in weather commonly known as “hurricane season”. During this six-month period from June through November, the likelihood for hurricanes and tropical storms that impact the eastern United States is extremely high. While hurricane events in Prince George’s County are quite rare, the possibility of associated tropical storms, intense thunderstorms, and flood events are very real.
Residents and business owners located near a stream may wish to take measures to safeguard against potential losses associated with flooding. The Prince George’s County Department of Environmental Resources (DER) has a number of services available to assist local home and business owners with information about how to reduce the likelihood of flood losses. DER administers a comprehensive floodplain management program that includes: technical assistance to property owners with flooding and drainage problems, construction of capital projects to alleviate drainage and flooding problems (drainage systems, floodwalls, stormwater management ponds, levees), administration of a floodplain/stormwater management ordinance to prevent building in the floodplain and reduce the effects of development on “downstream” properties, dissemination of floodplain information to residents, businesses, lenders and insurance companies, and participation in the National Flood Insurance Program/Community Rating System which enables County residents to purchase flood insurance at a reduced rate.
A review of the floodplain studies prepared by FEMA and DER can
determine if your property is located in or near the floodplain.
Perhaps the single most important measure that owners of flood prone
property can make is to purchase flood insurance. To obtain
additional information on the location of your property as it
relates to the floodplain, call
Yanping Zhang at (301) 883-5787 or (301) 883-3311. For more
information on how to obtain flood insurance call the
National Flood Insurance Program at (800) 427-4661.
Information on flood insurance, flood safety tips, flood and
disaster preparedness can also be found on the FEMA website
at www.fema.gov and at the Maryland Department of the
Environment (MDE) website at http://www.mde.state.md.us/Programs/WaterPrograms/Flood_Hazard_Mitigation/reliefAssistance/index.asp.
Although flooding and other natural disasters can strike at
any time, advance planning and preparedness will go a long
way in reducing the impacts of a natural disaster.
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Disaster Do’s and Don’ts
Things you can do now to prepare for a flood event
- Educate yourself of the flood risks in your area;
- Find a fast and safe route to high ground from your home, place of work and school. Be aware of which transportation routes may be closed in case of flooding;
- Put together an emergency flood kit which should includes: a first aid kit with essential medicines, drinking water, a flashlight, batteries, non-perishable food, a portable radio, a can opener, blankets and warm clothing;
- Be sure to have temporary care lined up for your pets in case of flooding;
- Buy flood insurance; most homeowners’ policies do not cover flood damage;
- Store your valuables and toxic materials in higher areas of your house; and
- Create a list of the contents in your house complete with photographs. This will be useful for flood insurance claims and tax deductions following a flood event.
If time permits
- If there is sufficient time, protect your home with sandbags, plastic sheeting, and plywood. Remember sandbags should not be stacked against the building;
- Turn off all utilities; and
- Stock bathtubs and sinks with fresh water.
Things to do during a flood event
- Pay attention to the local weather forecast and flood warnings;
- Avoid flooded areas; DO NOT ATTEMPT TO WALK, SWIM OR DRIVE THROUGH A FLOODED AREA;
- If trapped in your home, move to the upper stories of the house and the roof if necessary. WAIT FOR HELP TO COME TO YOU;
- Stay away from electrical equipment in wet areas; and
- If your car is stuck in a flooded area, abandon your car as fast as possible to seek higher ground.
Things to do following a flood
- Do not use food, water and medicine contaminated by the flood waters;
- Do not use tap water until the community officials advise that it is safe;
- Be aware of hazards caused by structural damage to buildings;
- Turn off all utilities if you have not already done so. Do not use open flames when searching your home after a flood because of possible gas leaks;
- Electrical outlets and wiring need to be checked by a professional before usage. The No. 2 flood killer after drowning is electrocution;
- Dispose of contaminated carpeting and drywall;
- Be careful about drying wooden items in the sun because warping may occur;
- Do not pump out flood water from basements all at once. Pump out about one-third of the water per day;
- Document all flood loss for flood insurance, government assistance, and tax deduction purposes; and
- Pay attention to local news for information on any financial assistance available from FEMA. If access to the internet is available, use FEMAs website for up-to-date information on disaster assistance ( www.fema.gov ).
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Frequently Asked Questions (FAQs)
- My mortgage company informed me that I am in a designated Special Flood Hazard Area (SFHA). What is a SFHA?
The SFHA is what is commonly referred to as the "100-year" floodplain. This is somewhat of a misnomer because it often leads people to believe that this is a flood that occurs only once in 100 years when in fact there might be two "100-year" floods within a month. The "100-year flood" is the name given to a flood that has a 1% chance of occurring in any given year. In fact, over a 30-year mortgage, there is a 26% chance that a flood will occur to a home and only a 4% chance of a fire.
- Why is my lender requiring the purchase of flood insurance?
For nearly every mortgage transaction in the United States that involves a structure, the lender reviews current National Flood Insurance Program (NFIP) maps for the community in which the property is located. The NFIP map review is made to determine the location of the property in relation to the SFHA. If the lender determines that the structure is indeed located within the SFHA and the community is participating in the NFIP, the borrower is notified that flood insurance will be required as a condition of receiving a loan. These lender requirements are set forth in the Flood Disaster Protection Act of 1973 and the National Flood Insurance Reform Act of 1994. Stipulations of these legislative acts require the purchase of flood insurance by property owners who are being assisted by Federal programs or by Federally regulated institutions in the acquisition or improvement of land, or facilities, or structures located or to be located within an SFHA.
- How can a property owner determine if the property is in a Special Flood Hazard Area (SFHA)?
FEMA publishes Flood Insurance Rate Maps, which show the flood hazard areas in a community. The Flood Insurance Rate Maps are on file with the Department of Environmental Resources (DER) and many insurance companies. In addition to the Flood Insurance Rate Maps, DER has done a number of floodplain studies covering most of Prince George's County. The Flood Insurance Rate Maps and local floodplain study maps can be viewed by the public at the DER offices in Largo. In addition, local residents and business owners can call
the Department of Public Works and Transportation at (301)
883-5777 to request floodplain information about their particular property.
- What if I disagree with my lender's determination that I am in the flood zone?
Property owners may not contest the requirement if the lending institution has established the requirement as part of its own standard lending practices. However, if a lending institution is requiring the insurance to meet mandatory flood insurance purchase requirements of the NFIP, the property owner and lender may jointly request that FEMA review the lending institution's determination. The FEMA review merely looks to see if the determination is accurate based upon a review of the NFIP maps and the location of the property in relation to the SFHA. If a property owner is not satisfied with the results of this review, they may apply for a Letter of Map Amendment (LOMA), which is a more detailed look at the elevation of the structure on the property and the elevation of the floodplain as shown on the NFIP map.
Please call Yanping Zhang at (301) 883-5787 or (301) 883-3311
for additional information on the LOMA process.
- Who can purchase a flood insurance policy?
NFIP coverage is available to all owners or insurable property (a building and/or its contents) in a community participating in the NFIP. Owners and renters may insure their personal property against flood loss with "contents coverage".
For the answers to additional questions on flood insurance purchase requirements and flood zone determinations, visit the FEMA web site at http://www.fema.gov/business/nfip/ (This link opens in a new browser window).
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