I llt8.2 PII£ RIVER (Iliamna Lake) 



LOCATION: 59°48'12" N. 153°53'30" W. 



PREVIOUS NAMES OR NUMBERS: DIO 



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



PHYSICAL DESCRIPTION 



TOTAL LENGTH: 30.2 miles 



LENGTH ACCESSIBLE TO SALMON: 30.2 miles 



AVERAGE WIDTH: 100' RANGE: 70'-200' 



AVERAGE DEPTH: 36" RANGE: 30"-60" 



TOTAL ACCESSIBLE SPAWNING AREA: 1,771,92^+ square yards (366. 1 acres) 



POTENTIAL SPAWNING AREA: I3/0, 230, 38^+ square yards (47.6 acres) 



BOTTOM QUALITY: 13^ <l/8", lOfo l/8"-3", 20^ 3"-12", 3/" >12", 5^ unknown. 

 Poor spawning facilities due to coarse bottom, instability, and water 

 velocities exceeding 5 f ps . 



WATERSHED: II5 square miles. A glacial valley heavily forested with spruce, 

 birch,and cottonwood. Streajn glacial and subject to occasional severe 

 flooding. Falls above 6 miles. Source: surface runoff and glaciers. 



GRADIENT: 52 '/mile 



WATER VELOCITY: 5.O fps 



FLOW: 250-300 cfs (July 25, I962). RANGE: 



Measxared O.3 miles from mouth, 

 normal summer flow. 



AIR TEMPERATURE: 22.0° C. (July 25, I962) 



WATER TEMPERATURE: lU.0° C. (July 25, I962) 



POOLS AND RIFFLES: 



