112-10 K 117A 
N55°12.1 W131°49. 3 Previous No. 116B 
KETCHIKAN, CLARENCE STRAIT, W. shore Gravina Island, .5 mile N. of Dall Head 
MAJOR SPECIES Pink OTHER SPECIES Chum, coho 
ESCAPEMENT TIMING Late. Sep. -Oct. ESCAPEMENT MAGNITUDE 3-5,000 
SPAWNING FACILITIES Excellent. Limited by size of stream. Numerous windfalls restrict gravel movement. 
STREAM TEMPERATURES Warmrange. Observed temperatures 48.5°F., 10/7/47. 
VALLEY DESCRIPTION Stream cut valley running parallel to the shore for about .7 mile before turning toward 
the W. slope of Gravina Ridge. Relatively short valley only a little over 3 miles from the mouth to the head. 
-DRAINAGE 4square miles (Polar Planimeter). Precipitation fed. Timbered slopes. 
STREAM MOUTH IDENTIFICATION 
ANCHORAGE 
TRAILS AND SURVEY ROUTES No trails. Stream bed easily walked during normal water levels. 
AERIAL SURVEY NOTES Not surveyed by air. 
INTERTIDAL ZONE 
LENGTH AVERAGE WIDTH/DEPTH  15-20'/6" 
GRADIENT AND VELOCITIES 
BOTTOM Gravel, small rock. 
HIGH TIDE LOCATION Stream emergence from woods. 
SCHOOLING AREAS None reported. 
SPAWNING AREAS Limited to upper intertidal area. 
GENERAL NOTES 
UPSTREAM 
LENGTH ACCESSIBLE >.5 mile AVERAGE WIDTH/DEPTH  15'/6" 
GRADIENT AND VELOCITIES 1° at 2! per second 
BOTTOM Gravel, small rock. 
MARKER DISTANCE 
MARKER IDENTIFICATION 
BARRIERS None reported. 
TRIBUTARIES No important tributaries. 
SCHOOLING AREAS _ Windfall pools offer limited schooling shelter. 
SPAWNING AREAS _ Gravel areas throughout lower stream area are used by spawning salmon. 
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 Gis) ERI 5,000 500 2 coho Good 
