ADF STAT. No. 

 142-10 CASTLE RIVER WR 61 



56°40.1' N. 133°15.7' W. Previous No. 85 



WRANGELL, DUNCAN CANAL, 3. 5 miles W. of N. tip af Big Castle I. 



MAJOR SPECIES Pink, coho. OTHER SPECIES Chum. 



ESCAPEMENT TIMING Middle. Aug. -Sept. ESCAPEMENT MAGNITUDE 



SPAWNING FACILITIES Very limited in first half mile. 



STREAM TEMPERATURES Normal range. No observed temperatures . 



VALLEY DESCRIPTION Wide, flat muskeg valley. 



DRAINAGE 25 square miles (polar planimeter). 



STREAM MOUTH IDENTIFICATION Enters the head of the bay behind Castle Islands on the N. side 

 of the large tideflat. 



ANCHORAGE Anchor in the lee of Castle Islands. 



TRAILS AND SURVEY ROUTES This is a hard stream to survey without stranding the skiff. A main- 

 tained trail follows the right bank from the high tidemark. Shelter cabin at high tidemcrk. 



AERIAL SURVEY NOTES Almost always muskeg colored; impossible to survey. 



INTERTIDAL ZONE 



LENGTH 1.5 miles. AVER AGE WIDTH/ DEPTH 60V3"-12". 



GRADIENT AND VELOCITIES Moderate. 



BOTTOM Mostly small gravel. 



LOW TIDE LOCATION Extensive flats. 



HIGH TIDE LOCATION Falls; shelter cabin. 



SCHOOLING AREAS Below falls. 



SPAWNING AREAS Very few. 



GENERAL NOTES 



UPSTREAM 



LENGTH ACCESSIBLE AVERAGE WIDTH/DEPTH 100'/2"-12".. 



GRADIENT AND VELOCITIES Very gentle. 

 BOTTOM Sand and fine gravel. 

 MARKER DISTANCE 

 MARKER IDENTIFICATION 

 BARRIERS 

 TRIBUTARIES 



SCHOOLING AREAS Many pools. 

 SPAWNING AREAS Gravel riffles throughout. 



GENERAL NOTES A large river which has a bedrock rapids for the first 500 yards. Cohos appear to 

 be major species in recent years. Good surveys are lacking due to aerial survey conditions. 



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