111-20 MARGARET CREEK K 85 
N55°41.7 W131°37.5 Previous No. 83 
KETCHIKAN, BEHM CANAL, TRAITORS COVE, S. shore 2 miles from entrance 
MAJOR SPECIES Pink and chum OTHER SPECIES Coho, trout 
ESCAPEMENT TIMING Late. Sep. -Oct. ESCAPEMENT MAGNITUDE >10,000 
SPAWNING FACILITIES Though there is little gravel less than 4-6" in diameter, the facilities are adequate 
for satisfactory spawning. Past observers have rated spawning facilities as "poor" while reporting escapements 
up to 20, 000. 
STREAM TEMPERATURES Warmrange. Observed temperature: 59°F., 8/26/53. 
VALLEY DESCRIPTION Stream cut. Muskeg areas along slopes on the S. side of the valley. Lake basin 1. 3 miles 
upstream. Timber abundant. 
DRAINAGE 26 square miles (Polar Planimeter). Precipitation fed through lake 1 mile long. Muskeg colored water 
very dark during rain and floods. 
STREAM MOUTH IDENTIFICATION Extensive intertidal zone. Pilings present, used in past for mooring 
log rafts. Silt mud throughout lower intertidal zone. Cove off mouth well known crab area. 
ANCHORAGE 8 fathoms off mouth of stream $.E. of island at entrance. 
TRAILS AND SURVEY ROUTES Stream bottom slippery with brown algae. Easily walked during normal 
water levels. 
AERIAL SURVEY NOTES Aerial visibility restricted upstream by trees along banks and shadows. Intertidal 
visibility adequate. 
INTERTIDAL ZONE 
LENGTH .4 miles AVERAGE WIDTH/DEPTH 40-60'/12" 
GRADIENT AND VELOCITIES Less than 1° at 1-2' per second 
BOTTOM Silt mud in lower area, sand, gravel, rocks and boulders above. 
LOW TIDE LOCATION Opposite point on W. side of intertidal area. 
HIGH TIDE LOCATION At the gravel bar mid-way between the head of the grassflats on the W. bank and the tribu- 
tary on the W. bank at the 80° bend toward the S. 
SCHOOLING AREAS Shallow pools in upper intertidal zone. 
SPAWNING AREAS Riffles from 3/4 tide mark to high tide mark. 
GENERAL NOTES 
UPSTREAM 
LENGTH ACCESSIBLE .7 miles AVERAGE WIDTH/DEPTH 30-40'/12-18" 
GRADIENT AND VELOCITIES 2->3° at 2-3' per second 
BOTTOM Bedrock, small boulders, slate. 
MARKER DISTANCE .7 miles. 
MARKER IDENTIFICATION Impassable falls. 
BARRIERS Falls are 30' high (estimated) in a chute and there are several smaller drops. Some small drops in the 
upper accessible stream are not barriers. 
TRIBUTARIES Small tributary enters . 1 miles upstream on W. bank. Low water discharge 3-4 cubic feet per 
second (estimated). Accessible for short distance to salmon on normal or higher water levels. 
SCHOOLING AREAS A number of shallow (2-3' depth) pools throughout the stream hold small schools of salmon. 
SPAWNING AREAS Very limited in the upstream. No major area. 
GENERAL NOTES 
