except at high water, jlpproximately 28 miles above the mouth there 

 is the new previously mentioned Federal flood control dam, -wiriich is 

 a total barrier to fish. An old 8-foot high lumber mill dam was lo- 

 cated 32 miles above the mouth, A flume from the mill pond was used 

 to trans ixirt rough lumber to a planin^^ mill 2 miles above Cottage 

 Grove. At the time of the survey a poor fish ladder uras entirely 

 blocked by a stop log. 



A 2-foot high wooden dam was located 34 miles above the mouth, 

 and another old lovf mill dam tvas located 1^ miles farther uijstream. 

 Both were considered passable Tfith some difficulty. 



At the end of the survey, 3-|- miles above Black Butte Creek, 

 there was an old 7^-foot hi^jh splash daia vdth a 20-foot v/ide apron, 

 rendering it impassable except at extreme flood stage. 



Several lov/ falls and cascades were found in the upper section 

 of the river. 



At the time of the survey there was quite heavy pollution of 

 the river by domestic sev/ers and slaughter house wastes in the 

 vicinity of Cottage Grove. The mid-section of the stream was badly 

 polluted with sawmill yrastej sawdust, bark, and slabs almost filling 

 the channel in places. Effluent from a mercury mine was noted in the 

 vicinity of the new Cottage Grove Dam. 



25FF-(1). Bear Creek . — 



25FF-(2). Lynx Hollow Creek . — These streams enter the Coast 

 Tbrk 8 and 9 miles above the mouth. They vrere discharging about 4 

 c.f.s., on Ifey 23, 1938, and are of no value to salmon. 



25FF-(3). Get tings Creek . — Enters the Coast Fork about 15 miles 

 above the mouth. It was discharging I5 c.f.s., on May 23, 1948, and 

 was not surveyed. 



25FF-(4). RowRiver.—^Lfey 23-31, 1938j Kolloen, Parkhurst, and 

 langton.) Enters the Coast Ibrk approximately 19 miles above the 

 mouth. The stream is 22 miles long, and was completely surveyed. U.3. 

 Geological Survey records from a gaging station located about 5 miles 

 above the mouth show a maximum flow of 20,000 c.f.s., on December 30, 

 1942, and a minimum flovf of 14 c.f.s., on August 29 to September 2, 

 1940. The water temperature ranged from 54° to 62° F. The stream flow 

 is now being regulated at the recently completed Dorena Dam, located Vg 

 miles above the mouth. This dam, 102 feet high, is a total barrier to 

 fish. 



There is a 6-foot falls 13 miles above the mouth that is passable 

 to fish with difficulty. 



83 



