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I 99-2 CHEKOK CREEK ( Iliarana Lake) 



LOCATION: ^9°kj'2k" N. 154°23'00" W. 



PREVIOUS NAMES OR NUl-IBERS: F5 



U.S.G.S. MAP: Iliarana, 1:250,000 



PHYSICAL DESCRIPTION 



TOTAL LENGTH: 5-0 miles 



LENGTH ACCESSIBLE TO SALMON: 1.25 miles 



AVERAGE WIDTH: 15' RANGE: 9 '-20' 



AVERAGE DEPTH: 8" RANGE: 6"- 30" 



TOTAL ACCESSIBLE SPAWNING AREA: 11,132 square yards (2-3 acres) 



POTENTIAL SPAWNING AREA: lOfo, 1,132 sqimre yards (0.23 acre) 



BOTTOM QUALITY: 57fo <l/8", h3io l/8"-3". Poor spawning facilities due to 

 silt. Bottom linstable. Spring ponds good when accessible. 



WATERSHED: 6 square miles. A shallow stream- cut valley between Roadhouse 

 and Knut son Mountains. Creek occupies same watershed as Tomkok and 

 Canyon Creeks. V7i 11 ow, alder, and birch along stream, some cottonwood 

 and spruce. Source: spring ponds, several small lakes at head. Blocked 

 by beaver dam 1.3 miles from moiith. 



GRADIENT: 30 '/mile 



WATER VELOCITY: 1.0 fps 



FLOW: 10 cfs (Aug. 30, I962). Measured RANGE: 

 at mouth, normal summer flow. 



AIR TEMPERATURE: 17.0° C. (Aug. 30, I962) 



WATER TEMPERATURE: 7.0° C. (Aug. 30, I962) 



POOLS AND RIFFLES: 



