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WATERSHED FLOOD MAPSApalachee Bay – St. Marks River

Basin Resources

Flood Maps

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APALACHEE BAY – ST. MARKS RIVER WATERSHED

AERIAL

• Base map for the development of flood maps

• Helps understand the water resource

WATERSHED FLOOD MAPS

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POPULATION2010 Census

Total Basin Population

353,476

WATERSHED FLOOD MAPS

MAP IN PRODUCTION

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LAND USE

WATERSHED FLOOD MAPS

LAND USE SQUARE MILESAgriculture 46Barren Land 1Rangeland 30

Transportation/Utilities 18Upland Forest 512

Urban/Developed 144Water 14

Wetlands 278TOTAL (NWFWMD) 1,043

Total Basin Size (NWFWMD) = 543 sq. mi.[Forest/Wetlands = 790 sq. mi. (76%)]

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WETLANDS• 325 sq. mi. of wetlands in the

basin

• Help attenuate flood flows

• Provide a significant amount of flood storage

• NWFWMD ERP provides wetland protection & mitigation

• NWFWMD dam safety regulatory program

WATERSHED FLOOD MAPS

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CONSERVATION LANDS

WATERSHED FLOOD MAPS

• Most are within the Apalachicola National Forest & the St. Marks Wildlife Refuge

• Along with public preservation and recreation opportunities, conservation lands are a preventive measure that helps keep development out of the flood zone.

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• Existing gages

• Useful for flood warning and flood study model calibration

WATERSHED FLOOD MAPS

GAGE LOCATION

S MAP IN PRODUCTION

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LiDAR DATA

WATERSHED FLOOD MAPS

• NWFWMD LiDAR data base

• DEM for entire basin

• Important base data that is used throughout the district for flood mapping

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SPECIAL FLOOD

HAZARD AREA(SFHA)

WATERSHED FLOOD MAPS

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Escambia CountySFHA w/

Panel Scheme

WATERSHED FLOOD MAPS

• Map Modernization – upgraded maps in Escambia County

• Maps revised and went effective on September 29, 2006

MAP IN PRODUCTION

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Santa Rosa

CountySFHA with

Panel Scheme

WATERSHED FLOOD MAPS

• Map Modernization – upgraded maps in Santa Rosa County

• Maps revised and went effective on September 29, 2006

MAP IN PRODUCTION

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Okaloosa County SFHA with Panel Scheme

WATERSHED FLOOD MAPS

• Map Modernization – upgraded maps in Okaloosa County – Effective = December 6, 2002

• Now we are working under the risk map program to further improve the flood maps.

MAP IN PRODUCTION

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WATERSHED FLOOD MAPS

Current On-going

Non-Coastal Studies

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NWFWMD Flood Information Portal

http://portal.nwfwmdfloodmaps.com/

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NWFWMD Flood Information Portal

http://portal.nwfwmdfloodmaps.com/

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NWFWMD Flood Information Portal

http://portal.nwfwmdfloodmaps.com/

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NWFWMD Flood Information Portal

http://portal.nwfwmdfloodmaps.com/

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NWFWMD Flood Information Portal

http://portal.nwfwmdfloodmaps.com/

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NWFWMD Flood Information Portal

http://portal.nwfwmdfloodmaps.com/

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NWFWMD LiDAR Data Serverhttp://www.nwfwmdlidar.com/

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NWFWMD LiDAR Data Serverhttp://www.nwfwmdlidar.com/

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NWFWMD LiDAR Data Serverhttp://www.nwfwmdlidar.com/

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• DEM

• CONTOURS

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WATERSHED FLOOD MAPSPensacola Bay

QUESTIONS?