ADF STAT. No. 

 130-20 WR 54 



56°35.2' N. 132°44.5' W. Previous No. 73 



WRANGELL, SUMNER STRAIT, BLIND SLOUGH, head of N. arm. 



MAJOR SPECIES Pink. OTHER SPECIES Chum, coho, red. 



ESCAPEMENT TIMING Early. July-Aug. ESCAPEMENT MAGNITUDE 



SPAWNING FACILITIES West fork - fair; east fork - good. 

 STREAM TEMPERATURES Cold range. Observed temperatures: 55.5' F. , 8/13/50; 48° F. , 9/8/50; 



44* F. , 9/30/50. 

 VALLEY DESCRIPTION 



DRAINAGE 10 sqiare miles (polar planimeter). 

 STREAM MOUTH IDENTIFICATION The stream lies in the NE. comer of the slough and flows 



through a long grass -bordered tidal area. 

 ANCHOR AGE The slough is very shallow and should be used only by small craft. 

 TRAILS AND SURVEY ROUTES Travel along the stream is easy at normal water levels. Leave 



skiff secured to the bank and follow the W. bank. Can be reached from Petersburg by road. 

 AERIAL SURVEY NOTES Dark water makes surveys impossible. 



INTERTIDAL ZONE 



LENGTH 1 mile. AVER AGE WI DTH / D EPTH 30'/3". 



GRADIENT AND VELOCITIES Gentle. 



BOTTOM Good gravel. 



LOW TIDE LOCATION 



HIGH TIDE LOCATION 



SCHOOLING AREAS Several holes are utilized throughout tliis zone. 



SPAWNING AREAS Evidence of spawning has been observed in the upper one-fourth mile. The upper 



three-fourths mile appears well suited for spawning. 

 GENERAL NOTES 



UPSTREAM 



LENGTH ACCESSIBLE AVERAGE WIDTH/DEPTH 10'/3". 



GRADIENT AND VELOCITIES Moderate. 



BOTTOM 



MARKER DISTANCE 



MARKER IDENTIFICATION 



BARRIERS 



TRIBUTARIES TTie stream forks just above the high tidemark. The left fork is the most important. 



SCHOOLING AREAS Holes and riffles occur alternately. 



SPAWNING AREAS TTie right fork has good clean gravel for three -fourths mile; at this point larger 



rocks begin to show up and spawning facilities become poorer. 

 GENERAL NOTES 



1^2 



