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United States Environmental Protection Agency
ROE Fish Faunal Percent Loss
Percent reduction is based on the number of native species determined to be present as of 2015, compared with historical numbers documented prior to 1970. Data are displayed by 6-digit hydrologic unit code (HUC-6) watershed. A species is considered "present" if there is at least one record of its presence in any 8-digit HUC within the 6-digit HUC. This indicator presents a summary of data available from the NatureServe Explorer database (
). The identity and status (current vs. historical) of all native fish species recorded in each 8-digit HUC are available from this database, along with species-by-species distribution maps at the 8-digit HUC level. Analyses based on these data have previously been reported in Master et al. (1998, 2003) and Stein et al. (2000). Data were provided by NatureServe.
These data were created to be used for the U.S. Environmental Protection Agency's Report on the Environment website.
Time Period of Content
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South Bounding Latitude:
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Metadata Reference Information
Metadata Date Stamp:
Metadata Standard Name:
FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version: