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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 risk of flow alteration (RFA) due to evaporative loss from artificial water bodies in local catchments for the 14-state SARP region. Â The amount of water body surface is based on high resolution NHD and linked to NHD+ catchments. Â The risk is based on the percentage of the catchment land surface covered by artificial water bodies (100 x water body surface area / watershed surface area) Risk of flow alteration categories: Â Â Â Â Â Â Â Â Â ZERO -Â Â Â Â Â Â 0% land covered by artificial...
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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 risk of flow alteration (RFA) from runoff from impervious surfaces in local catchments 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         LOW -Â...
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The SARP Flow Alteration Assessment provides a regional characterization of the distribution and risk of flow regime impairment by anthropogenic sources at the NHD+ segment scale. This map illustrates the annual risk of impacts to flow from evaporative loss from artificial waterbodies within the whole watershed. The cumulative risk is based on the percent of the land surface in the watershed covered by artificial water bodies (100 x water body surface area / watershed surface area) Risk categories:   ZERO -      0% land covered by artificial water bodies,                             LOW -      0-2%                            MEDIUM -Â...
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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. Â The amount of impervious surface is based on 2006 National Land Use/Land Cover dataset. Â 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: Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ZERO -Â Â Â Â Â 0% land covered by impervious...


    map background search result map search result map Cumulative Risk of Flow Alteration from Impervious Surfaces in the SARP Region Risk of Flow Alteration from Artificial Waterbodies in Local Catchments of the SARP Region Cumulative Risk of Flow Alteration from Artificial Waterbodies in the SARP Region Risk of Flow Alteration from Impervious Surface in Local Catchments of the SARP Region Cumulative Risk of Flow Alteration from Impervious Surfaces in the SARP Region Risk of Flow Alteration from Artificial Waterbodies in Local Catchments of the SARP Region Cumulative Risk of Flow Alteration from Artificial Waterbodies in the SARP Region Risk of Flow Alteration from Impervious Surface in Local Catchments of the SARP Region