ADF STAT. No. 

 142-40 PORCUPINE CREEK WR 42 



56°07.9' N. I32'39.5' W. Previous No. 56 



WRANGELL, CLARENCE STRAIT, STEAMER BAY, Head. 



MAJOR SPECIES Pink. OTHER SPECIES Chum. 



ESCAPEMENT TIMING Middle. Aug. -Sept. ESCAPEMENT MAGNITUDE 



SPAWNING FACILITIES Good. 



STREAM TEMPERATURES Observed temperatures: 49' F. , 9/20/49; 58' F. , 9/4/51. 



VALLEY DESCRIPTION Stream-cut. 



DRAINAGE 2. 4 square miles ( [Xjlar planimeter). 



STREAM MOUTH IDENTIFICATION Meanders through a narrow, grassy flat. 



ANCHOR AGE Good anchorage is afforded at the head of Steamer Bay, but the holding ground is not good 



and S E. winds draw with considerable force through the creek- 

 TRAILS AND SURVEY ROUTES 

 AERIAL SURVEY NOTES 



INTERTIDAL ZONE 



LENGTH 0.6mile AVER AGE WIDTH/ D EPTH 2075". 



GRADIENT AND VELOCITIES Gentle. 



BOTTOM Fine gravel and coarse sand. 



LOW TIDE LOCATION 



HIGH TIDE LOCATION 



SCHOOLING AREAS A deep pool 100 yards below the high tide mark. 



SPAWNING AREAS The upper half is composed of fine gravel and coarse sand. Spawning facilities 



here are good except for limited water flow. 

 GENERAL NOTES 



UPSTREAM 



LENGTH ACCESSIBLE AVERAGE WIDTH/DEPTH 20'/8"-12". 



GRADIENT AND VELOCITIES Gentle. 



BOTTOM Sand and fine gravel. 



MARKER DISTANCE 0. 2 mile. 



MARKER IDENTIFICATION 



BARRIERS 



TRIBUTARIES 



SCHOOLING AREAS 



SPAWNING AREAS 



GENERAL NOTES A small stream gently winding through the first one -fourth mile. 



165 



