163 

 I 337. h BELIITOA CREEK ( Iliamna lake) 



LOCATION: 59°22'l8" N. 155 "21 '30" W. 



PREVIOUS NAMES OR NUMBERS: Al 



U.S.G.S. MAP: Iliamna, 1:250,000; Iliamna B-5, 1:63, 36O 



PHYSICAL DESCRIPTION 



TOTAL LENGTH: 21+.9 miles 



LENGTH ACCESSIBLE TO SAIMON: 2k. 9 miles 



AVERAGE WIDTH: 35' RANGE: 20'-60' 



AVERAGE DEPTH: I8" RANGE: 12"-hQ" 



TOTAL ACCESSIBLE SPAWNING AREA: 511,588 square yards (IO5.7 acres) 



POTENTIAL SPAWNING AREA: 35^, 179, 080 sqmre yards (37-0 acres) 



BOTTOM QUALITY: 1^ <l/8", l8^ l/8"-3", 66i> 3"-12", 15^ >12". Good gravel in 

 lower 2 miles, poor in canyon, fair gravel above canyon, bxit extent un- 

 certain. Bottom stable. 



WATERSHED: 100 square miles. Creek emerges from a canyon 2 miles from mouth, 

 above canyon a broad valley and open rolling hills. Willow, birch, and 

 Cottonwood along stream. Source: numerous lakes and marshes. 



GRADIENT: 1+1+ '/mile 



WATER VELOCITY: 1.7 fps 



FLOW: 70 cfs (JiLLy 17, I962). Measured RANGE: 

 100 yards above outlet slough, normal 

 summer flow. 



AIR TEMPERATURE: 15.0° C. (July 17, I962) 



WATER TEMPERATURE: 12.0° C. (July 17, I962) 



POOLS AND RIFFLES: 



