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Cumulative Risk of Flow Alteration from Impervious Surfaces in the SARP Region


Original Data Basin Creation Date
2014-01-02 17:00:00
Original Data Basin Modified Date
2014-01-13 14:36:06


The SARP Flow Alteration Assessment provides a regional characterization of the distribution and risk of flow regime impairment of streams and rivers by anthropogenic sources at the NHD+ segment scale. This map illustrates the cumulative risk of flow alteration (RFA) due to runoff from impervious surfaces for the 14-state SARP region.  The amount of impervious surface is based on 2006 National Land Use/Land Cover dataset.  The risk is based on the percentage of the catchment land surface covered by impervious surfaces (100 x impervious surface area / watershed surface area): Risk of flow alteration categories:                            ZERO -     0% land covered by impervious surface      [...]


Data Owner :
Emily Granstaff

Attached Files

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  • Data Basin



Data source
Analie Barnett (TNC), Emily Granstaff (SARP/USFWS), and Mary Davis (SARP)
Harvested on Fri May 23 09:34:32 MDT 2014 from Data Basin Service

Additional Information


Type Scheme Key
UniqueKey Data Basin 046a845833af47ceb3bcab1014c24f56

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