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Filters: Tags: Environmental conditions (X) > Extensions: ArcGIS REST Service (X) > partyWithName: U.S. Geological Survey ScienceBase Team (X)

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This map service contains summaries of habitat condition indices (HCI scores) from the National Fish Habitat Action Plan (NFHAP) 2010 assessment for Ecological Drainage Units (EDUs) in the Conterminous United States. Initial HCI scores were developed using landscape factors representing human disturbances summarized to local and network catchments of river reaches throughout the Conterminous United States. Habitat condition scores were based on responsiveness of biological metrics to anthropogenic landscape disturbances throughout ecoregions. Separate scores were created by considering disturbances within local catchments, network catchments, and a cumulative score that accounted for the most limiting disturbance...
Categories: Data; Types: ArcGIS REST Map Service, Map Service; Tags: Alabama, Anthropogenic factors, Aquatic habitats, Arizona, Arkansas, All tags...
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This map service contains summaries of habitat condition indices (HCI scores) from the National Fish Habitat Action Plan (NFHAP) 2010 National Assessments for 8 digit Hydrological Unit Codes (HUC8s) of the United States. Initial HCI scores were developed in three separate assessments (Conterminous U.S., Hawaii, and Alaska) due to differences in data availability across these regions. In the initial NFHAP 2010 Alaska assessment HCI values were attributed to HUC12s. For this reason, to summarize data into HUC8s for Alaska an area-weighted average was used (i.e. the cumulative HCI score assigned to each HUC12 within a HUC8 was weighted by reach area using the formula (H1*A1+H2*A2...+HX*AX)/(A1+A2...+AX) where H = HCI...
Categories: Data; Types: ArcGIS REST Map Service, Map Service; Tags: Alabama, Alaska, Anthropogenic factors, Aquatic habitats, Arizona, All tags...


    map background search result map search result map NFHAP Inland Assessment - Fish Habitat Condition Index Scores by HUC8basin - Tiled Map Service NFHAP Inland Assessment - Fish Habitat Condition Index Scores by Environmental Drainage Unit (EDU) - Dynamic Map Service NFHAP Inland Assessment - Fish Habitat Condition Index Scores by Environmental Drainage Unit (EDU) - Dynamic Map Service NFHAP Inland Assessment - Fish Habitat Condition Index Scores by HUC8basin - Tiled Map Service