9^ 

 I 156.8:11.0 ILIAMNA RIVER - RIGHT FORK ( Iliamna River) 



LOCATION: 59*^8'00" N. 153%8'30" W. 



PREVIOUS NAMES OR NUMBERS: None 



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



PHYSICAL DESCRIPTION 



TOTAL LENGTH: I7.9 miles 



LENGTH ACCESSIBLE TO SALMON: I7.9 miles 



AVERAGE WIDTH: 85' RANGE: 60'-120' 



AVERAGE DEPTH: I5" RANGE: 12"- 30" 



TOTAL ACCESSIBLE SPAWNING AREA: 892,^96 square yards {iQk.k acres) 



POTENTIAL SPAWNING AREA: 37^, 330,088 sqmre yards (68.2 acres) 



BOTTOM QUALITY: 35^ <l/8", 55^ l/8"-3", 10^ 3"-12". Good spawning gravel 

 in lower miles, some rock and boulder, upper portion not well known, 

 bottom fairly stable. 



WATERSHED: A glacial valley heavily forested with spruce, birch, and cotton- 

 wood. Subject to occasional severe flooding. Source: mainly surface 

 rxinoff, snowmelt. 



GRADIENT: 9I '/mile 



WATER VELOCITY: 1.0 fps 



FLOW: 200 cfs (Sept. k, I96I) . Measvired RANGE: 

 0.7 mile above forks, water level 

 reading . 



AIR TEMPERATURE: 11.0° C. (Sept. k, I96I) 



WATER TEMPERATURE: 9.0° C. (Sept. h, I961) 



POOIS AND RIFFLES: 



