50 CFR Part 660, Table 1

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

4th Field hydrologic unit code	Hydrologic unit name	State(s)	Chinooksalmon	Coho salmon	Puget Sound pink salmon	Impassable dam(s)
17020005	Chief Joseph	WA	X	X	\| Chief Joseph Dam.
17020006	Okanogan	WA	X	\|	n/a.
17020007	Similkameen	WA	X	\|	n/a.
17020008	Methow	WA	X	X	\| n/a.
17020009	Lake Chelan	WA	X	\|	n/a.
17020010	Upper Columbia-Entiat	WA	X	X	\| n/a.
17020011	Wenatchee	WA	X	X	\| n/a.
17020012	Moses Coulee	WA	X	X	\| n/a.
17020015	Lower Crab	WA	X	\|	n/a.
17020016	Upper Columbia-Priest Rapids	WA	X	X	\| n/a.
17030001	Upper Yakima	WA	X	X	\| Keechelus Dam Kachess Dam (Kachess River).
17030002	Naches	WA	X	X	\| Rimrock Dam (Tieton River).
17030003	Lower Yakima	WA	X	X	\| n/a.
17060101	Hells Canyon	OR/ID	X	\|	Hells Canyon Dam.
17060102	Imnaha River	OR/ID	X	\|	n/a.
17060103	Lower Snake-Asotin	OR/WA/ID	X	X	\| n/a.
17060104	Upper Grande Ronde River	OR	X	X	\| n/a.
17060105	Wallowa River	OR	X	X	\| n/a.
17060106	Lower Grande Ronde	OR/WA	X	X	\| n/a.
17060107	Lower Snake-Tucannon	WA	X	X	\| n/a.
17060108	Palouse River	WA	X	\|	n/a.
17060110	Lower Snake River	WA	X	X	\| n/a.
17060201	Upper Salmon	ID	X	\|	n/a.
17060202	Pahsimeroi	ID	X	\|	n/a.
17060203	Middle Salmon-Panther	ID	X	\|	n/a.
17060204	Lemhi	ID	X	\|	n/a.
17060205	Upper Middle Fork Salmon	ID	X	\|	n/a.
17060206	Lower Middle Fork Salmon	ID	X	\|	n/a.
17060207	Middle Salmon-Chamberlain	ID	X	\|	n/a.
17060208	South Fork Salmon	ID	X	\|	n/a.
17060209	Lower Salmon	ID	X	\|	n/a.
17060210	Little Salmon	ID	X	\|	n/a.
17060301	Upper Selway	ID	X	X	\| n/a.
17060302	Lower Selway	ID	X	X	\| n/a.
17060303	Lochsa	ID	X	\|	n/a.
17060304	Middle Fork Clearwater	ID	X	X	\| n/a.
17060305	South Fork Clearwater	ID	X	X	\| n/a.
17060306	Clearwater	WA/ID	X	X	\| n/a.
17060308	Lower North Fork Clearwater	ID	X	\|	Dworshak Dam.
17070101	Middle Columbia-Lake Wallula	OR/WA	X	X	\| n/a.
17070103	Umatilla	OR	X	X	\| McKay Dam (McKay Creek).
17070105	Middle Columbia-Hood	OR/WA	X	X	\| n/a.
17070106	Klickitat	WA	X	X	\| n/a.
17070306	Lower Deschutes	OR	X	X	\| n/a.
17080001	Lower Columbia-Sandy	OR/WA	X	X	\| Bull Run Dam #2.
17080002	Lewis	WA	X	X	\| n/a.
17080003	Lower Columbia-Clatskanie	OR/WA	X	X	\| n/a.
17080004	Upper Cowlitz	WA	X	X	\| n/a.
17080005	Cowlitz	WA	X	X	\| n/a.
17080006	Lower Columbia	OR/WA	X	X	\| n/a.
17090001	Middle Fork Willamette	OR	X	\|	n/a.
17090002	Coast Fork Willamette	OR	X	\|	Dorena Dam.
17090003	Upper Willamette	OR	X	X	\| n/a.
17090004	McKenzie	OR	X	X	\| Cougar Dam.1
17090005	North Santiam	OR	X	X	\| Big Cliff Dam.2
17090006	South Santiam	OR	X	X	\| n/a.
17090007	Middle Willamette	OR	X	X	\| n/a.
17090008	Yamhill	OR	X	X	\| n/a.
17090009	Molalla-Pudding	OR	X	X	\| n/a.
17090010	Tualatin	OR	X	X	\| n/a.
17090011	Clackamas	OR	X	X	\| n/a.
17090012	Lower Willamette	OR	X	X	\| n/a.
17100101	Hoh-Quillayute	WA	X	X	\| n/a.
17100102	Queets-Quinault	WA	X	X	\| n/a.
17100103	Upper Chehalis	WA	X	X	\| n/a.
17100104	Lower Chehalis	WA	X	X	\| n/a.
17100105	Grays Harbor	WA	X	X	\| n/a.
17100106	Willapa	WA	X	X	\| n/a.
17100201	Necanicum	OR	X	X	\| n/a.
17100202	Nehalem	OR	X	X	\| n/a.
17100203	Wilson-Trask-Nestucca	OR	X	X	\| n/a.
17100204	Siletz-Yaquina	OR	X	X	\| n/a.
17100205	Alsea	OR	X	X	\| n/a.
17100206	Siuslaw	OR	X	X	\| n/a.
17100207	Siltcoos	OR	\| X	\| n/a.
17100301	North Umpqua	OR	X	X	\| n/a.
17100302	South Umpqua	OR	X	X	\| n/a.
17100303	Umpqua	OR	X	X	\| n/a.
17100304	Coos	OR	X	X	\| n/a.
17100305	Coquille	OR	X	X	\| n/a.
17100306	Sixes	OR	X	X	\| n/a.
17100307	Upper Rogue	OR	X	X	\| Lost Creek Dam.
17100308	Middle Rogue	OR	X	X	\| Emigrant Dam.
17100309	Applegate	CA/OR	X	X	\| Applegate Dam.
17100310	Lower Rogue	OR	X	X	\| n/a.
17100311	Illinois	CA/OR	X	X	\| n/a.
17100312	Chetco	CA/OR	X	X	\| n/a.
17110001	Fraser	WA	X	X	\| n/a.
17110002	Strait Of Georgia	WA	X	X	X	n/a.
17110003	San Juan Islands	WA	\| X	\| n/a.
17110004	Nooksack	WA	X	X	X	n/a.
17110005	Upper Skagit	WA	X	X	X	Gorge Lake Dam.
17110006	Sauk	WA	X	X	X	n/a.
17110007	Lower Skagit	WA	X	X	X	n/a.
17110008	Stillaguamish	WA	X	X	X	n/a.
17110009	Skykomish	WA	X	X	X	n/a.
17110010	Snoqualmie	WA	X	X	X	Tolt Dam (S. Fork Tolt River).
17110011	Snohomish	WA	X	X	X	n/a.
17110012	Lake Washington	WA	X	X	\| Cedar Falls (Masonry) Dam (Cedar River).
17110013	Duwamish	WA	X	X	X	n/a.
17110014	Puyallup	WA	X	X	X	n/a.
17110015	Nisqually	WA	X	X	X	n/a.
17110016	Deschutes	WA	X	X	\| n/a.
17110017	Skokomish	WA	X	X	X	n/a.
17110018	Hood Canal	WA	X	X	X	n/a.
17110019	Puget Sound	WA	X	X	X	n/a.
17110020	Dungeness-Elwha	WA	X	X	X	n/a.
17110021	Crescent-Hoko	WA	X	X	\| n/a.
18010101	Smith River	CA/OR	X	X	\| n/a.
18010102	Mad-Redwood	CA	X	X	\| Robert W. Matthews Dam.
18010103	Upper Eel	CA	X	X	\| Scott Dam.
18010104	Middle Fork Eel	CA	X	X	\| n/a.
18010105	Lower Eel	CA	X	X	\| n/a.
18010106	South Fork Eel	CA	X	X	\| n/a.
18010107	Mattole	CA	X	X	\| n/a.
18010108	Big-Navarro-Garcia	CA	X	X	\| n/a.
18010109	Gualala-Salmon	CA	X	X	\| n/a.
18010110	Russian	CA	X	X	\| Coyote Valley Dam (E. Fork Russian R.) Warm Springs Dam (Dry Cr.).
18010206	Upper Klamath	CA/OR	X	X	\| Keno Dam.
18010207	Shasta	CA	X	X	\| Dwinnell Dam.
18010208	Scott	CA	X	X	\| n/a.
18010209	Lower Klamath	CA/OR	X	X	\| n/a.
18010210	Salmon	CA	X	X	\| n/a.
18010211	Trinity	CA	X	X	\| Lewiston Dam.
18010212	South Fork Trinity	CA	X	X	\| n/a.
18020104	Sacramento-Stone Corral	CA	X	\|	n/a.
18020111	Lower American	CA	X	\|	Nimbus Dam.
18020115	Upper Stony	CA	X	\|	Black Butte Dam.
18020116	Upper Cache	CA	X	\|	Capay Dam.3
18020125	Upper Yuba	CA	X	\|	n/a.
18020126	Upper Bear	CA	X	\|	Camp Far West Dam.
18020151	Cow Creek	CA	X	\|	n/a.
18020152	Cottonwood Creek	CA	X	\|	n/a.
18020153	Battle Creek	CA	X	\|	n/a.
18020154	Clear Creek-Sacramento River	CA	X	\|	Keswick Dam (Sacramento R.), Whiskeytown Dam (Clear Creek).
18020155	Paynes Creek-Sacramento River	CA	X	\|	n/a.
18020156	Thomes Creek-Sacramento River	CA	X	\|	n/a.
18020157	Big Chico Creek-Sacramento River	CA	X	\|	n/a.
18020158	Butte Creek	CA	X	\|	n/a.
18020159	Honcut Headwaters-Lower Feather	CA	X	\|	Feather River Fish Barrier Dam.
18020161	Upper Coon-Upper Auburn 4	CA	X	\|	n/a.
18020162	Upper Putah	CA	X	\|	Monticello Dam.
18020163	Lower Sacramento	CA	X	\|	n/a.
18040001	Middle San Joaquin-Lower Chowchilla 5	CA	X	\|	Buchanan Dam (Chowchilla River), Bear Dam (Bear Creek), Owens Dam (Owens Creek) Mariposa Dam.
18040002	Lower San Joaquin River 5	CA	X	\|	n/a.
18040003	San Joaquin Delta	CA	X	\|	n/a.
18040007	Fresno River	CA	X	\|	Hidden Dam.
18040008	Upper Merced	CA	X	\|	Crocker-Huffman Diversion Dam.
18040009	Upper Tuolumne	CA	X	\|	La Grange Dam (Tuolumne R.).
18040010	Upper Stanislaus	CA	X	\|	Goodwin Dam.
18040011	Upper Calaveras	CA	X	\|	New Hogan Dam.
18040012	Upper Mokelumne	CA	X	\|	Camanche Dam.
18040013	Upper Cosumnes	CA	X	\|	n/a.
18050001	Suisun Bay	CA	X	\|	n/a.
18050002	San Pablo Bay	CA	X	X	\| San Pablo Dam (San Pablo Cr.).
18050003	Coyote	CA	X	X	\| LeRoy Anderson Dam.
18050004	San Francisco Bay	CA	X	X	\| n/a.
18050005	Tomales-Drake Bays	CA	X	X	\| Nicasio Dam (Nicasio Cr.) Peters Dam (Lagunitas Cr.).
18050006	San Francisco Coastal South	CA	\| X	\| n/a.
18060015	Monterey Bay 6	CA	\| X	\| Newell Dam (Newell Cr.)

1 Cougar Dam is a barrier to coho salmon only. Chinook salmon are trapped and hauled above the dam.

2 Big Cliff Dam is a barrier to coho salmon only. Chinook salmon are trapped and hauled above the dam.

3 Capay Dam was selected as the upstream extent of EFH because it was identified as a complete barrier by NMFS biologists and is located in the vicinity of the historical upstream extent of Chinook salmon distribution.

4 Natural “lower falls” are downstream of any artificial barriers that would meet the criteria for designating them as the upstream extent of EFH; therefore, the upstream extent of EFH within this HU is at the “lower falls”.

5 EFH for Chinook salmon in the Middle San Joaquin-Lower Chowchilla HU (18040001) and Lower San Joaquin River HU (18040002) includes the San Joaquin River, its eastern tributaries, and the lower reaches of the western tributaries. Although there is no evidence of current or historical Chinook salmon distribution in the western tributaries (Yoshiyama et al. 2001), the lower reaches of these tributaries could provide juvenile rearing habitat or refugia from high flows during floods as salmon migrate along the mainstem in this area.

6 EFH for coho salmon in the Monterey Bay HU does not include the sections south of the Pajaro HU (18060002).

[79 FR 75450, Dec. 18, 2014]