12D3. Green River 



12E. Olequa Creek 



14 A. East Fork 

 Lewis River 



18C. Abernethy 

 Creek 



18D. Tualatin 

 River 



I8E. Mollala 

 River 



Km. 



43 Lower two-thirds. Same as present, 



and lower Devils Cr. 



35 



Lower part and 

 Stillwater Creek. 



Same as present. 



67 



50 kn 



Same as present. 



21 



112 



80 



18F. Vamhill 18 



River 



18G. Rickreall 48 



Creek 



I8H. Luckiamute 83 



River 



40 



45 



58 



80 



142 



173 



Fork. Roaring. 

 Oakgrove Fork, 

 Collawash and Hot 

 Springs Fork Rivers. 



Main Creek and 

 tributary, Holcomb 

 Cr. 



Upper Gales Cr. 



Main Mollala, and 

 lower North Fork 

 Rivers, Butte and 

 Abiqua Creeks, 

 Upper Milk Cr. 



North Yamhill and 

 upper South 

 Yamhill Rivers. 



None. 



None. 



Not as large as 

 now. 



About same as 

 present. 



Same as present. 



Unknown. 



Probably some 

 reduction. 



Unkn 



Another large tributary of the Toutle R. 1, 38 

 with good spawning areas. Best areas 

 in lower 8 km. and for 8 km. below Big 

 Falls, which is a total barrier. (Toutle 

 River Hatchery passes steelhead trout 

 above it3 collection facility.) 



Pollution, siltation and obstructions were 1, 38 

 problems for many years. Passage is 

 restored and pollution abated (at least 

 in part). A few fish use this stream. 



Good spawning and rearing areas; sup- 

 ports a small run of species. 



Many excellent spawning areas in lower 

 river above Mayfield Reservoir. 



Lower 53 km, and lower North Fork 

 contain excellent spawning areas. 



About 48 km. of excellent spawning 

 area became accessible in 1956 as result 

 of new fishway at falls and dam 18 km. 

 above mouth. Has good run. 



Fair numbers still use area below 1, 38 

 Merwin but failure of passage at Mer- 

 win, Yale, and Swift Dams has pre- 

 vented use of good upriver spawning 

 areas. 



Numerous falls are low water barriers. 1, 38 

 Steelhead trout reported to ascend to 

 Sunset Falls, 50 km. up; good stream. 



All except lower part blocked until old 1, 38 

 mill dam removed in 1946 and other 

 Improvements made. 



Supports small run. Water depleted dur- 29 

 Ing summer because of diversion. 



Small stream, has small run of steel- 29 

 head trout. 



Pollution and compacted gravel with silt 1, 35 

 have spoiled areas. 



Main river spawning scattered through- 29, 40 

 out upper half. Has many good areas. 



Small stream, has some good spawning 29, 40 

 areas. 



Upper Clackamas has many excellent 29, 40 

 spawning and rearing areas. Runs ap- 

 peared to be on increase during the late 

 1960's, possibly because of better sur- 

 vival through passage facilities at North 

 Fork Dam. Eagle Cr. National Fish 

 Hatchery rears some of the run. This 

 system supports a good sport fishery. 



Removal of obstruction in 1953-55 in- 29, 40 

 creased use of stream. Small run. 



Number of steelhead trout using stream 29, 40 

 unknown but may be substantial. Chief 

 deterrent is low summer flow during 

 rearing period. 



Has excellent spawning areas. 29, 40 



Spawning has been observed In recent 29, 40 

 years by personnel of O.F.C. 



Good spawning gravel present through- 29, 40 

 out most of length, but low flows, pollu- 

 tion from sewage, and probably high 

 summer temperatures limit value of 

 stream. 



Stream has good potential for rearing 29, 40 

 steelhead trout. A falls blocks run from 

 upper Little Luckiamute R. 



See footnotes at end of table. 



