Layer: Flood Prevention and Stormwater Mitigation Potential Index (ID: 18)

Name: Flood Prevention and Stormwater Mitigation Potential Index

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Description: This layer provides an index of the Flood Prevention and Stormwater Mitigation Potential of forests and wetlands across the state of Maryland. Index values range from 1 (low) to 5 (high), based on a modified version of the Watershed Resource Registry Stormwater Preservation model which ranks relative capacity and stormwater load across the landscape. Several factors determine the amount of stormwater runoff that is stored on the landscape. Riparian areas and forests and wetlands in watersheds with high impervious area upstream receive larger amounts of stormwater runoff. The type of soil, presence of floodplain, whether in a riparian area, type of wetland, and the impervious surface percentage of the surrounding watershed all factor into how much water runs off into the area and the ability of the area to absorb that water. This data layer was created as part of the Maryland Department of Natural Resources "Accounting for Maryland's Ecosystem Services" program.

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