B 32.6 TSUIM CREEK (Lake Beverley) 



LOCATION: 59°43'30" N. 159° 02 '00" W. 



PREVIOUS NAMES OR l^HMBERS: 



U.S.G.S. MAP: Goodnews, Alaska, 1:250,000, 1951 



PHYSICAL DESCRIPTION 



TOTAL LENGTH: 6.5 miles 



LENGTH ACCESSIBLE TO SALMON: > 3 miles 



AVERAGE WIDTH: 50' RANGE: 35' -70' 



AVERAGE DEPTH: l8" RANGE: 12" -96" 



TOTAL ACCESSIBLE SPAWNING AREA: 18.I8 acres 



POTENTIAL SPAWNING AREA: 65^; 11.82 acres 



BOTTOM QUALITY: 90^ gravel, lO/o sand 



WATERSHED: 12 square miles. Long gravelly creek draining Rainbow Basin. 

 Beaver dams in upper areas. 



GRADIENT: 



WATER VELOCITY: Average = 2.75 fps^ 

 Range = 2.2-3.5'fps. 



FLOW: 169 c.f.s. (Aug. 1, I960). High RANGE: 

 water level. Flow station one-half 

 mile upstream from mouth. 



AIR TEMPERATURE: 12.5° C. (Aug. 1, I960) 



WATER TEMPERATURE: 3.9° C. (Aug. 1, I960) 



POOLS AND RIFFLES: Frequent deep pools. 



170 



