113-13 K 155 



55M6.2' N. 132*29' W. Previous No. 137 



KETCHIKAN, CLARENCE STRAIT, CHOLMONDELEY SOUND, WEST ARM , Head 



MAJOR SPECIES Pink, chum OTHER SPECIES Coho 



ESCAPEMENT TIMING Late. Sept. -Oct. ESCAPEMENT MAGNITUDE 



SPAWNING FACILITIES Good to excellent. 



STREAM TEMPERATURES Warm range (Observed temperatures: 46" F. , 9/5/53, 45* .F. , 9/20/53). 



VALLEY DESCRIPTION Stream-cut. The valley runs in a N. -S. direction. One mile upstream the 

 valley walls rise sharply away from the stream. Extensive outcropping on the ridge to the W. 



DRAINAGE 4. 5 square miles (polar planimeter). Precipitation fed. Snowfields encompass the upper end 

 of the valley, contributing snowmelt at certain times of the year. Surface runoff probably also con- 

 tributes. 



STREAM MOUTH IDENTIFICATION Enters the head of the West Arm from the S. side. This 

 stream and K 155A enter a large tide flat; K 155 enters the S. E. corner. 



ANCHORAGE Refer to K 154. 



TRAILS AND SURVEY ROUTES Relatively easy to travel up either bank. 



AERIAL SURVEY NOTES Fly up the W. side of the stream and swing back down the valley. 



INTERTIDAL ZONE 



LENGTH 0.5 mile AVERAGE WIDTH / DEPTH 



GRADIENT AND VELOCITIES 



BOTTOM Gravel. 



LOW TIDE LOCATION 



HIGH TIDE LOCATION 



SCHOOLING AREAS 



SPAWNING AREAS Spawning is limited in this zone. 



GENERAL NOTES 



UPSTREAM 



LENGTH ACCESSIBLE AVERAGE WIDTH/DEPTH 20'-30V12"-16" 



GRADIENT AND VELOCITIES Moderate 



BOTTOM Gravel and small boulders. 



MARKER DISTANCE 0. 8 mile 



MARKER IDENTIFICATION 



BARRIERS 



TRIBUTARIES 



SCHOOLING AREAS Numerous large pools. 



SPAWNING AREAS Reported to be on excellent spawning stream with numerous gravel riffles. 



GENERAL NOTES 



