Floodplain General Structures
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https://private-demo-dcdev.opendata.arcgis.com/maps/79942bac8860405085408aad3bf77790
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资源简介：
The FIRM is the basis for floodplain management, mitigation, and insurance activities for the National Flood Insurance Program (NFIP). flood control structure
创建时间：
2015-02-28
