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County
Loudoun Floodplain
Loudoun County, Virginia —
More MetadataMaintenance and Update Frequency: Floodplain boundaries are updated by Building and Development staff as detailed floodplain studies are submitted and... -
Floodplains
District of Columbia —
The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Management Agency (FEMA), and... -
Rhode Island Avenue Metro Underpass Flood Hazard Area
District of Columbia —
On August 14, 2023, approximately 2 inches of rain fell in less than an hour at this location, flooding the underpass, stranding cars, and filling a pet daycare... -
Floodplains from 2023
District of Columbia —
The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Management Agency (FEMA), and... -
State
MD iMAP: Preliminary FEMA Floodplain
State of Maryland —
This is a MD iMAP hosted service. Find more information on http://imap.maryland.gov. The DFIRM Database presents the flood risk information depicted on a given Flood... -
State
MD iMAP: Maryland Floodplain - Preliminary FEMA Floodplain
State of Maryland —
This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. This layer offers the anticipated floodplain boundaries however - the data shown... -
Floodplains from 2010
District of Columbia —
Insurance applications include enforcement of the mandatory purchase requirement of the Flood Disaster Protection Act, which ... requires the purchase of flood... -
Floodplains from 1985
District of Columbia —
Insurance applications include enforcement of the mandatory purchase requirement of the Flood Disaster Protection Act, which requires the purchase of flood insurance... -
County
Environmentally Sensitive Areas
Fairfax County, Virginia —
This polygon dataset is composed of subsets from Fairfax County’s current soil inventory, recorded floodplain, and Resource Protection Area (RPAs) layers. Layer... -
State
MD iMAP: Maryland Floodplain - Effective FEMA Floodplain
State of Maryland —
This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. The Effective Floodplain layer represents the official regulatory floodplain as... -
Floodplains from 2016
District of Columbia —
Insurance applications include enforcement of the mandatory purchase requirement of the Flood Disaster Protection Act, which ... requires the purchase of flood... -
Floodplain FIRM Panels
District of Columbia —
Location and attributes for FIRM hardcopy map panels. The spatial entities representing FIRM panels are polygons. The polygon for the FIRM panel corresponds to the... -
State
MD iMAP: Effective FEMA Floodplain
State of Maryland —
This is a MD iMAP hosted service. Find more information on http://imap.maryland.gov. The DFIRM Database presents the flood risk information depicted on a given Flood... -
City
Greater Austin FEMA Floodplain
City of Austin —
FEMA (Federal Emergency Management Agency) publishes maps used to make determinations of floodplain status for the purposes of Flood Insurance. FEMA is the... -
Tidal Shoreline Flood Hazard Area
District of Columbia —
The tidal shoreline buffer includes the areas along the banks of the Potomac and Anacostia Rivers that are projected to be inundated by tides on a daily basis by 2080.... -
Floodplain General Structures
District of Columbia —
Location and attributes for flood control structures shown on the flood profile and FIRM. This table is required whenever hydraulic structures are shown in the flood... -
City
Floodplain Boundaries
Town of Chapel Hill, North Carolina —
Floodplain boundaries for Chapel Hill, North Carolina as delineated by the FEMA Digital Flood Insurance Rate Mapping Program.