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ARSN Crossings Surveyed SRI Method [U.S. Fish and Wildlife Service]

Department of the Interior Full Details

Full Details

Title
ARSN Crossings Surveyed SRI Method [U.S. Fish and Wildlife Service]
Description
The Sediment Risk Index was developed as a model for prioritizing stream crossings in the Choctawhatchee watershed within southeast Alabama from 2006 to 2007. Over seventy-three variables were collected from stream crossings including information on waterway conditions, crossing structures, road approaches, and roadside soil erosion features that promote sediment delivery.These findings were summarized into a 12-metric index (the SRI), modeled after Karr's Index of Biotic Integrity (IBI) for fish and other assemblages (Karr, 1981). The goal of condensing stream crossings data into an index was to reduce the time and manpower investment of collecting data. Each metric of the SRI is standardized with scores 1 (most-impacted), 3 (moderately-impacted), or 5 (least-impacted) (Stewart et al., 2006) The scores for the 12 metrics are summed into a single SRI value ranging from 12 to 60, which is used for determining site rank and condition.
Creator
Department of the Interior
Temporal Coverage
Last modified 2024-07-08
Date Issued
2023-11-03
Access Rights
Public
Format
Shapefile
Language
English
Date Added
August 28, 2025

Location

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Cite and Reference

  • Citation
    Department of the Interior (2023). ARSN Crossings Surveyed SRI Method [U.S. Fish and Wildlife Service]. . https://gis-fws.opendata.arcgis.com/datasets/fws::arsn-crossings-surveyed-sri-method (dataset)
  • BTAA Geoportal Link

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