N 11.6 PORTAGE CRSEi: (Lake Nerka) 



LOCATION: 59°28'24" N. 153°53'00" W. 



PREVIOUS NAMES OR IM-fflERS: 



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



PHYSICAL DESCRIPTION 



TOTAL LENGTH: 1 -3 miles 



LENGTH ACCESSIBLE TO SALIiON: 1-3 miles (Varies depending on leaver dam) 



AVERAGE WIDTH: 9-1' RANGE: 8.4 '-9-5' 



AVERAGE DEPTH: 8" RANGE: 6 "-12" 



TOTAL ACCESSIBLE SPAWiaNG AREA: 1.1+3 acres 



POTENTIAL SPACING AREA: 85',^; 1-26 acres 



BOTTOM QUALITY: Good gravel in creek. 



VIATERSHED: Flovfs through forested area to Lake Nerka. Beaver dams in lo\rer 

 creek caiise tlockage in some years. 



GRADIEIW: 



WATER VELOCITY: 



FLOW: RANGE: 



AIR TEMPERATURE: 



WATER TEMPERATURE: 10.8* C. (Aug. 25, 19^0) 



POOLS AND RIFFI^S: 



71 



