ADF STAT. No. 

 142-10 PETERSBURG CREEK WR 56 



56°50.2' N. ISB'Ol.e' W. Previous No. Ti 



WRANGELL, WRANGELL NARROWS, NW. of Bayou Ft. 



MAJOR SPECIES Pink. OTHER SPECIES Chum, coho, red. 



ESCAPEMENT TIMING Middle. Aug. -Sept. ESCAPEMENT MAGNITUDE 



SPAWNING FACILITIES Excellent. 

 STREAM TEMPERATURES Normal range. Observed temperatures: 52* F. , 9/5/52; 48. 5° F. , 



9/16/52; 55. 5' F. , 9/4/53; 52° F . , 9/11/53. 

 VALLEY DESCRIPTION Glacial origin. 

 DRAINAGE 36 square miles (polar planimeter). Drains Petersburg Lake, about 3. 5 miles in length and 



0-5 mile wide- The stream is fed by snowmelt and surface runoff. 

 STREAM MOUTH IDENTIFICATION Enters the N. end of the Wrangell Narrows opposite the town 



of Petersburg- A long, grass-bordered tidal flat is found at the mouth. 

 ANCHORAGE Boats may moor or anchor in the harbor at Petersburg. 

 TRAILS AND SURVEY ROUTES A forest service trail follows the left bank up to the lake. The 



intertidal area is very long and a survey should begin on a floodtide to enable boats to pass through 



this zone. Stream margins are brushy, but at normal water levels the stream can be waded. 



INTERTIDAL ZONE 



LENGTH 4. 5 miles. AVERAGE WIDTH/DEPTH 200"/6"- 



GRADIENT AND VELOCITIES Gentle. 



BOTTOM Gravel with sand in the lower part. 



LOW TIDE LOCATION 



HIGH TIDE LOCATION Above cabins - "mud banks". 



SCHOOLING AREAS Some deep areas occur throughout. 



SPAWNING AREAS The upper 2 miles offer excellent spawning facilities. The lower reaches huve not 



been adequately surveyed. 

 GENERAL NOTES In this zone the stream splits and rejoins many times. Numerous grassy places. 



UPSTREAM 



LENGTH ACCESSIBLE 4 miles to lake. AVERAGE WIDTH/DEPTH 50'/10". 



GRADIENT AND VELOCITIES Gentle to moderate. « 



BOTTOM Gravel and sand, shale boulders 4 miles upstream. 

 MARKER DISTANCE 

 MARKER IDENTIFICATION 

 BARRIERS None. 



TRIBUTARIES One tributary flows from W. near Lake outlet. 

 SCHOOLING AREAS A few deep holes and resting areas. 



SPAWNING AREAS Almost a continuous riffle area with excellent spawning facilities. 

 GENERAL NOTES Fair stream for aerial survey. Water has slight muskeg color during normal 

 flow. 



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