A DF STAT. No. 

 115-40 McHENRY LAKE CREEK WR 37 



56°02.3' N. 132°22.4' W. Previous No. 50 



WRANGELL, CLARENCE STRAIT, McHENRY INLET, Head of E. arm. 



MAJOR SPECIES Pink. OTHER SPECIES Chum. 



ESCAPEMENT TIMING Late. ESCAPEMENT MAGNITUDE 



SPAWNING FACILITIES Good. Extremely limited above the intertidal zone. 



STREAM TEMPERATURES Normal range. Observed temperatures: 54 F. , 9/12/50; 49°F. , 10/2/50; 



S8'F. , 9/15/51; 54' F. , 9/26/51; 49"F. , 10/6/51; 48' F. , 9/22/52; 50.5*F. , 10/4/S2; 48. 5'F. , 



9/16/53; 50'F. , 9/29/53; 47*F. , 10/5/53. 

 VALLEY DESCRIPTION Stream-cut. 

 DRAINAGE 16 square miles (polar planimeter). Drains McHenry Lake which is about 1 mile long and 



0. 5 mile wide. 

 STREAM MOUTH IDENTIFICATION Enters the same tideflat as WR 36. Ues in the NE. comer 



and runs through the W. side of the flat. 

 ANCHORAGE Refer to WR 36. 



TRAILS AND SURVEY ROUTES Easily wadeable to falls. 

 AERIAL SURVEY NOTES Intertidal area good for aerial survey. 



INTERTIDAL ZONE 



LENGTH 0. 6 mile AVERAGE WIDTH/DEPTH 50'-75V3"-12" . 



GRADIENT AND VELOCITIES Gentle to moderate. 



BOTTOM Good spawning gravel. 



LOW TIDE LOCATION 



HIGH TIDE LOCATION 



SCHOOLING AREAS A large pool about halfway up this zone is the major schooling area. 



SPAWNING AREAS Spawning occurs throughout most of this zone. The upper part has a higher per- 

 centage of spawning gravel than the lower part, where large rock persists. 



GENERAL NOTES The intertidal aiea makes up almost all the available spawning portions of this 

 stream. 



UPSTREAM 



LENGTH ACCESSIBLE 0. 2 mile to falls AVERAGE WIDTH/DEPTH 45V6". 



GRADIENT AND VELOCITIES Moderate to steep. 



BOTTOM Bedrock, large rock, and heavy gravel. 



MARKER DISTANCE 



MARKER IDENTIFICATION 



BARRIERS A series of 2 falls 0. 2 mile above the high tidemark are impassable to salmort. The first 



falls is 30' high and the second is 20'. 

 TRIBUTARIES None. 



SCHOOLING AREAS Two deep holes below the first falls. 



SPAWNING AREAS TTie spawning facilities in this section are fair but limited. 

 GENERAL NOTES The stream splits just above the intertidal zone, but rejoins a short distance 



upstream. Both sections ore utilized. 



Ikj 



