101-11 BUSH CREEK Kase) 
N55°14 W131° 28.9 Previous No. 112 
KETCHIKAN, REVILLAGIGEDO CHANNEL, NADZAHEEN COVE, N.W. Head 
MAJOR SPECIES Pink OTHER SPECIES Chum, coho 
ESCAPEMENT TIMING Late. Sep. -Oct. ESCAPEMENT MAGNITUDE  50-100,000 
SPAWNING FACILITIES Excellent facilities throughout entire stream. Upstream sections not used as intensively 
by pink, but provide fine facilities for chum. Over 60% of the spawning has been observed in the intertidal zone. 
STREAM TEMPERATURES Warm range. Observed temperatures: 55°F. , 9/19/49, 49°F., 10/6/49; 45.5-53°F. , 
1950; 58°F. , 9/10/51, 49°F. 9/25/51; 52-55°F. , 1952; 59°F. , 9/10/53, 54°F., 9/22/53. 
VALLEY DESCRIPTION Glacial origin. Lower stream lies in shallow canyon running N. -S. and both tributary 
streams enter at right angles from the W. Main stream valley flows across flat muskeg area from two lakes at 
the base of the mountains. 
DRAINAGE 9 square miles (Polar Planimeter). Precipitation fed through two fair sized lakes and some small ponds. 
STREAM MOUTH IDENTIFICATION There is a cabin on the W. shore in lower intertidal zone. Lower 
intertidal zone has a small constriction, just above the low tide mark. 
ANCHORAGE Just inside the E. point off the mouth of the stream. Anchorage is exposed to S.E. winds. 
TRAILS AND SURVEY ROUTES Stream easily surveyed from banks in the intertidal and by wadding the 
stream. Game trail on N. side of main stream from the first falls. 
AERIAL SURVEY NOTES Aerial salmon observations are easily made on most water levels. Straight stream 
course easily flown. 
INTERTIDAL ZONE 
LENGTH .6mile AVERAGE WIDTH/DEPTH 70-80'/10" 
GRADIENT AND VELOCITIES .5° at 1-2' per second 
BOTTOM _ Small gravels of shale and some quartz. 
HIGH TIDE LOCATION Head of grassflats, . 1 mile below first falls stream. 
SCHOOLING AREAS Schooling occurs throughout all sections during large escapements. The mouth has been 
observed with schools up to 50, 000 in number. 
SPAWNING AREAS _ Excellent spawning facilities extend from just above the lower tidal zone constriction to 
high tide. 
GENERAL NOTES Intertidal zone estimates of up to 40, 000 have been made which indicates the capacity. 
UPSTREAM 
LENGTH ACCESSIBLE .3 mile AVERAGE WIDTH/DEPTH  10-50'/6-12" 
GRADIENT AND VELOCITIES 1° at 2' per second 
BOTTOM _ Gravel becoming coarse upstream. 
MARKER DISTANCE .3 mile 
MARKER IDENTIFICATION Barrier falls. 
BARRIERS Both the main falis stream . 1 mile above high tide and the tributary falls stream are impassable. 
TRIBUTARIES The larger discharge is from the first falls stream which has a limited spawning area. The smaller 
stream continues to a falls also. 
SCHOOLING AREAS _ Most schooling occurs in the intertidal zone. 
SPAWNING AREAS _ Spawning occurs throughout the accessible upstream areas. Chum dominates the more 
coarse upstream sections, though pink spawn in the sections too shallow for the chum. 
GENERAL NOTES Stream has been observed with exceptionally good returns from relatively low escapements. 
