101-42 COBB CREEK K 22-2 
N55°04.7 W130° 36.9 Previous No. 19A 
KETCHIKAN, REVILLAGIGEDO CHANNEL, BOCA DE QUADRA, Tributary to Hugh Smith Lake 
MAJOR SPECIES Red, pink OTHER SPECIES Chum, coho, trout 
ESCAPEMENT TIMING Late. Aug. -Sep. -Oct. ESCAPEMENT MAGNITUDE >5,000 
SPAWNING FACILITIES Good. Limited by upstream bedrock areas and barrier falls. 
STREAM TEMPERATURES Warmrange. Observed temperatures: 47-52°F., 1949. 
VALLEY DESCRIPTION Stream cut in valley of glacial origin. Small lake at head. Steep mountain slopes, 
bare rock ridges. Several high lakes on the E. side are tributary to the creek. 
DRAINAGE 6-7 square miles (estimated). Precipitation fed through lake system. Early snow fields persist into 
July. Extensive muskeg in valley. Timbered slopes. 
STREAM MOUTH IDENTIFICATION Broad delta just E. of prominant point on S. side of Hugh Smith Lake. 
TRAILS AND SURVEY ROUTES Game trails. Easily walked banks above delta. Skiff may be taken up delta 
about 100 yards. 
AERIAL SURVEY NOTES Surveyed only in delta. Upstream visibility is unsatisfactory. 
UPSTREAM 
LENGTH ACCESSIBLE .5 mile AVERAGE WIDTH/DEPTH  30!'/12" 
GRADIENT AND VELOCITIES. -5-1° at 2' per second 
BOTTOM Sand, gravel to 6" in diameter, bedrock rapids. 
MARKER DISTANCE .5 mile 
MARKER IDENTIFICATION Barrier falls 
BARRIERS Barrier falls over 30' in height. Small falls .4 mile upstream drops 4' in 20', but is not a barrier. 
TRIBUTARIES Small tributary enters on E. bank .3 mile upstream, accessible to salmon for short distance. 
SCHOOLING AREAS In the lake at the edge of the delta. Small, scattered pools throughout the accessible 
stream. Large pool between falls. 
SPAWNING AREAS _ Spawning throughout accessible stream from riffle above low falls to stream mouth. 
GENERAL NOTES 
