50 CFR Part 226, Table 3

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗

Hydrologic unit name	Hydrologic unit number
Sockeye salmon	Spring/summer chinook salmon \| Fall chinook salmon
Hells Canyon	\| 17060101 \| 17060101
Imnaha	\| 17060102 \| 17060102
Lower Snake—Asotin	17060103 \| 17060103 \| 17060103
Upper Grande Ronde	\| 17060104 \|
Wallowa	\| 17060105 \|
Lower Grande Ronde	\| 17060106 \| 17060106
Lower Snake—Tucannon	17060107 \| 17060107 \| 17060107
Palouse	\| \| 17060108
Lower Snake	17060110 \| 17060110 \| 17060110
Upper Salmon	17060201 \| 17060201 \|
Pahsimeroi	\| 17060202 \|
Middle Salmon—Panther	17060203 \| 17060203 \|
Lemhi	\| 17060204 \|
Upper Middle Fork Salmon	\| 17060205 \|
Lower Middle Fork Salmon	\| 17060206 \|
Middle Salmon—Chamberlain	17060207 \| 17060207 \|
South Fork Salmon	\| 17060208 \|
Lower Salmon	17060209 \| 17060209 \| 17060209
Little Salmon	\| 17060210 \|
Clearwater	\| \| 17060306
Lower North Fork Clearwater	\| \| 17060308

1 Hydrologic units and names taken from DOI, USGS 1:500,000 scale hydrologic unit maps (available from USGS); State of Oregon, 1974; State of Washington, 1974; State of Idaho, 1974.

[58 FR 68552, Dec. 28, 1993]