Table 3.— Spawning areas of steelhead trout in the Columbia River Basin— past and present— Continued 



Num 

 beri 



Stream 



Length 



Distance 

 above 

 mouth^ 



Spawning areas 



Present 



Past 



Notes 



References' 



27. Hood River 



28. Klickitat 

 River 



29. Chenoweth 

 Creek 



30. Mill Creek 



31. Fifteenmile 



Creek 



32. Deschutes 



River 



33. John Day 



River 



34. Umatilla 



River 



3S. Walla Walla 



River 



3 5 A. Touchet 



36. Snake 



River 



18 



36+ 



191 



90 



1.600 



36A. Palouse River 240 



36B. Tucannon River 96 



36C. Clearwater River 120 



36C1. Lapwai Creek 



4S 



36C2. Potlatch Creek 83 



36C3. Big Canyon Creek 46 



Km. 



270 



333 



463 



32 



519 



96 

 101 



224 



Midsection. East, 

 West, and Middle 

 Forks and Neal Cr. 



About same as 

 present. 



Tributaries of upper 

 John Day R., parts 

 of Rock, Butte, and 

 Thirty-mile Creeks, 

 North and Middle 

 Forks, and tribu- 

 taries of the South 

 Fork R. 



Birch and Meacham 

 Creeks, South and 

 North Forks, 



L'pper Walla Walla 

 R. and its 

 tributaries. 



L'pper portion and 

 tributaries. 



Scattered spawning 

 areas above Ice 

 Harbor pool to Hells 

 Canyon Dam. 



None. 



Middle and upper 

 Tucannon R., 

 Cummings and 

 Panjab Creeks. 



Perhaps small 

 stretches used in 

 addition to tribu- 

 taries listed below. 



Some reduction 

 though not located. 



Butter Cr. and some 

 sections of tribu- 

 taries taken out of 

 production by with- 

 drawal of water for 

 irrigation. 



Some tributaries re- 

 moved from pro- 

 duction. 



Low 



Main river spawn- 

 ing was lost by in- 

 undation. Because 

 this species spawns 

 during high water, 

 it is difficult to see 

 spawning activity 

 and locate areas. 



None. 



Much area of lower 

 stream damaged by 

 floods, dredging, 

 and diking in 1965. 



About same as now. 



Steelhead trout runs depleted by flow 23, 29 



diversions without adequate screening 



and diminished streamflow. Diversions 



now mostly screened. Has fair-sized 



runs now and supports a sport fishery. 



Has spring-summer and winter runs. 



After improvement in passage and stock- 1, 38 

 ing, the runs have increased. An ex- 

 cellent stream for spawning, rearing, and 

 sport fishing. 



Small stream, has small run. Summer 20. 29 

 flows are too low and warm for best 

 growth. 



Water depletion limits use of stream dur- 29 

 ing summer — small run. 



Fair to good spawning potential, but irrl- 20, 29 

 gation withdrawals reduce use. Stream 

 intermittent in lower half during summer. 



Good steelhead trout stream. Some area 20, 22 

 lost because juveniles failed to pass 

 through reservoirs. Run, which formerly 

 went above hydro projects, now reared 

 at hatchery. A new hatchery will be 

 built to compensate for losses at dams. 



Spawning areas are chlefiy in numerous 20, 22 

 small tributaries. Steelhead trout have 

 fared better than salmon. Many ex- 

 cellent areas. 



Excellent spawning areas in upper por- 22, 24, 33 



lions. Fish able to remain because of 



early migration through lower river. 



Water overappropriated ; lower portion 



and many stretches become nearly dry 



during summer. 



Irrigation has reduced value and taken 5, 22, 33 

 some sections out of production. Form- 

 erly had good runs; has good sport 

 fishery. 



lias numerous spawning, rearing, and 5, 22, 33 

 resting areas. No serious barriers to 

 migration, although some lower sections 

 have low water during summer. 



One of the best tributaries in the Co- 9. 10, 11. 



lumbia system. Many good spawning 19. 21, 26, 



areas in the middle and upriver por- 27, 28 



lions. Sport catch from 20.000 to 55.000 



during recent years. Until 1964, run 



went above Swan Falls Dam to spawn. 



Run normally migrating above Middle 



Snake River Area was cut off, and fish 



are reared at hatchery for planting in 



tributaries entering below Hells Canyon 



Dam. Many tributaries of this system 



have excellent spawning and rearing 



areas (see following). 



Palouse Fails blocks fish. No record of 26 

 use by salmon and trout in lower 10 km. 



Remnant of former large runs of spring- 26 

 and fall-run fish. Small sport fishery. 



Lewiston Dam remained passable be- 21 , 26. (*) 

 cause the fish pass during favorable 

 periods. Counts at Lewiston Dam var- 

 ied from 3,000 to over 33,000. 1950-61. 



Small stream, supports small run of 21, 26, (*) 

 steelhead trout. Irrigation practices are 

 limiting factor. 



Water-use has limited value of stream; 21. 26, (*) 

 only small run remains. 



This stream and its chief tributary have 21. 26. (*) 

 spawning areas. Later in the season 

 the flow becomes low and the young 

 must move elsewhere. 



See footnotes at end of table. 



