STEELHEAD
Oncorhynchus mykiss

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SNAKE RIVER BASIN ESU
LISTED THREATENED
August 1997

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ESU* STATUS AND DESCRIPTION:  Listed as a threatened species on August 18, 1997.  The ESU includes all naturally spawned populations of steelhead (and their progeny) in streams in the Snake River Basin of southeast Washington, northeast Oregon, and Idaho.

* An Evolutionarily Significant Unit or "ESU" is a distinctive group of Pacific salmon, steelhead, or sea-run cutthroat trout.

CRITICAL HABITAT:
Current Status - Under development. On April 30, 2002, the U.S. District Court for the District of Columbia approved a NMFS consent decree withdrawing a February 2000 critical habitat designation for this and 18 other ESUs.

PROTECTIVE REGULATIONS:  On July 10, 2000, NMFS published a final rule that identifies
several exceptions to the Endangered Species Act's Section 9 take prohibitions.

ESU MAPS AND DATA:

• View Detailed Snake River Basin Steelhead ESU Map  (Adobe Acrobat PDF format)
• View Range Map for all Steelhead ESUs
• Download steelhead ESU data in Arc/Info export and shape file format
• Download E-sized plot files of West Coast steeelhead listings in RTL file format for large format plotters

STATUS REVIEW UPDATE MEMOS:
Status Review Update for West Coast Steelhead from Washington, Idaho, Oregon, and California, 7/7/97 (5.5 mb pdf)

FEDERAL REGISTER NOTICES:
View Federal Register Notices for Steelhead

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