101-11 K 101 
N55°16.4 W131° 22 Previous No. 101 
KETCHIKAN, REVILLAGIGEDO CHANNEL, COHO COVE, Center head of cove 
MAJOR SPECIES Pink OTHER SPECIES Chum 
ESCAPEMENT TIMING Late. Sep. -Oct. ESCAPEMENT MAGNITUDE 1,000 
SPAWNING FACILITIES Fair spawning facilities though limited by the size of the stream. 
STREAM TEMPERATURES Warm range. Observed temperature: 46°F., 10/3/50. 
VALLEY DESCRIPTION Stream cut in valley of glacial origin. Small lake basin in small cirque at valley head. 
DRAINAGE _ 3.4 square miles (Polar Planimeter}. Precipitation fed. Lake .6 mile long with four small ponds. Mus- 
keg areas throughout. 
STREAM MOUTH IDENTIFICATION Blazed 2' spruce on N. side of stream at high tide. 
ANCHORAGE Between shore and rock off stream on E. side of cove. 
TRAILS AND SURVEY ROUTES Numerous windfalls make foot survey difficult. 
AERIAL SURVEY NOTES Not surveyed by air. 
INTERTIDAL ZONE 
LENGTH .1mile AVERAGE WIDTH/DEPTH 10'/8" 
GRADIENT AND VELOCITIES 1-2° at 1-2! per second 
BOTTOM _ Gravel and broken rock. 
HIGH TIDE LOCATION At emergence of stream from woods. 
SCHOOLING AREAS _ None reported. 
SPAWNING AREAS Upper 75 yards of intertidal zone has fairly good spawning facilities. 
GENERAL NOTES 
UPSTREAM 
LENGTH ACCESSIBLE AVERAGE WIDTH/DEPTH 10!/8" 
GRADIENT AND VELOCITIES 2-3° at 2! per second 
BOTTOM Gravel and rock. 
MARKER DISTANCE 
MARKER IDENTIFICATION None. 
BARRIERS _ Small passable falls over fallen logs. 
TRIBUTARIES No important tributaries. 
SCHOOLING AREAS Pools reported throughout surveyed distance (. 2 mile). 
SPAWNING AREAS Limited gravel areas between pools. 
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 
Sep 25 Gi 3 © FRI 500 10 Good 
Sep 28 Cea ea ERD 200 34 24 4 1 coho Good 
1950 
Octas G .3 FRI 220 90 i) 
1953 
Aug 26 Gi1.4 FWS 150 coho 
