112-10 Ko 1'7, 
N55°15. 2 W131°50.4 Previous No. 116C 
KETCHIKAN, CLARENCE STRAIT, 4.5 miles N. of Nelson Cove on W. Gravina Island 
MAJOR SPECIES Pink OTHER SPECIES Chum 
ESCAPEMENT TIMING Late. Sep. -Oct. ESCAPEMENT MAGNITUDE <2,000 
SPAWNING FACILITIES Very limited. Stream is a series of rapids and pools with limited patches of gravel. 
Three falls occur in the first .5 mile. The third is reported to be a barrier for most salmon. 
STREAM TEMPERATURES Warm range. Observed temperatures 46.9°F. 10/7/47. 
VALLEY DESCRIPTION Relatively steep stream cut valley originating in the ridge along the W. side of 
Gravina Island. Timbered slopes. Valley heads on W. side of mountain. Two lake basins of glacial origin. 
DRAINAGE 8 square miles (Polar Planimeter). Precipitation fed. Two lakes at head of stream. One small lake 
E. side near mouth. 
STREAM MOUTH IDENTIFICATION 
ANCHORAGE 
TRAILS AND SURVEY ROUTES No tzrails, stream bed easily walked. 
AERIAL SURVEY NOTES Not surveyed by air. 
INTERTIDAL ZONE 
LENGTH .1mile AVERAGE WIDTH/DEPTH  15-20'/10" 
GRADIENT AND VELOCITIES 1-2° at 2-3' per second 
BOTTOM Shale gravel, bedrock. 
HIGH TIDE LOCATION At stream emergence from woods. 
SCHOOLING AREAS None reported. 
SPAWNING AREAS Limited area near high tide. 
GENERAL NOTES 
UPSTREAM 
LENGTH ACCESSIBLE .5 mile AVERAGE WIDTH/DEPTH 15'/10" 
GRADIENT AND VELOCITIES »>3° at 2-4! per second 
BOTTOM Shale and bedrock. 
MARKER DISTANCE .5 mile. 
MARKER IDENTIFICATION 8! falls in two steps with pool between. 
BARRIERS Marker falls is difficult passage for salmon and none have been reported above. Two smaller falls 
downstream are passable. 
TRIBUTARIES None reported in first .5 mile. 
SCHOOLING AREAS Series of pools between rapids in first .5 mile. 
SPAWNING AREAS _ Small patches of shale gravel. 
GENERAL NOTES 
ESCAPEMENT RECORD 
[Counts made by ground surveys are designated by G. Aerial surveys by A] 
SURVEYED PINK CHUM OTHER SPECIES REMARKS 
Date Miles By Live Dead Live Dead Live Adjective Rating 
1947 
Oct 7 G .~5 ERI 2, 200 100 Good 
