123-21 



55° 1 2. 4' N. 1 32° 49. 5' W. 



HYDABURG CREEK 



ADF STAT. No. 



WC 18 

 ADF No. 234 

 FWS No. 1 1 



WEST COAST, SUKK WAN STRAIT, SUKKWAN NARROWS, N. ofHydaburg. 



MAJOR SPECIES Pink. OTHER SPECIES Chum, coho. 



ESCAPEMENT TIMING Late. Sep. -Oct. ESCAPEMENT MAGNITUDE 



SPAWNING FACILITIES Good above OS mile. Estimated spawning area is 12,000 square yards. 

 STREAM TEMPERATURES Normal range. Observed temperatures: Sl'F. , 8/30/52; 49° F. , 9/12/52; 



50*F. , 9/23/52; Sl'F. , 9/5/53; 50*F. , 9/14/53; 49*F. , 9/24/53. 

 VALLEY DESCRIPTION 



DRAINAGE 10 square miles (polar planimeter). 

 STREAM MOUTH IDENTIFICATION Enters through a bedrock area. The intertidal zone is a small 



mudflat. 

 ANCHORAGE Boats may moor at the floats in Hydaburg village. 



TRAILS AND SURVEY ROUTES Easily waded for its entire length. A good trail follows the right bank. 

 AERIAL SURVEY NOTES Good for aerial survey. 



INTERTIDAL ZONE 



LENGTH 0. 1 mile. 



GRADIENT AND VELOCITIES Moderate. 



BOTTOM Mud and bedrock. 



LOW TIDE LOCATION 



HIGH TIDE LOCATION Falls at high tide mark. 



SCHOOLING AREAS Off stream mouth on the flats. 



SPAWNING AREAS None. 



GENERAL NOTES 



AVERAGE WIDTH/DEPTH 40'/16"-18" 



UPSTREAM 



I 



AVERAGE WIDTH/DEPTH 8'- 15 • / 6"-10" 



LENGTH ACCESSIBLE 2 miles to dam . 



GRADIENT AND VELOCITIES Moderate to slow. 



BOTTOM Grave', sand. 



MARKER DISTANCE 



MARKER IDENTIFICATION 



BARRIERS A 13' falls and 11' dam are located upstream 5, 650'. Both are impassable. 



TRIBUTARIES 



SCHOOLING AREAS Pools throughout this section offer facilities for schooling salmon, 



SPAWNING AREAS Spawning in all riffle areas between the pools. 



ESCAPEMENT RECORD 

 [Counts made by ground surveys are designated by G. Aerial surveys by Al 



J 



chum at mouih 



