788  
SXUS56 KEKA 260515  
OSOEKA  
 
AREA WATER TEMPERATURES FOR NORTHWEST CALIFORNIA  
NATIONAL WEATHER SERVICE EUREKA CA  
1015 PM PDT MON OCT 25 2021  
 
THIS PRODUCT CONTAINS PROVISIONAL DATA FROM AUTOMATED GAUGES.  
THESE DATA HAVE NOT BEEN REVIEWED OR VERIFIED FOR ACCURACY.  
 
WATER TEMP F QC  
LOCATION BASIN OBS 24HR CHANGE FLAG  
----------------- --------------- --- ----------- ----  
BRANSCOMB 5N ELDER CREEK 54 -1.5  
CALPELLA 5E RUSSIAN RIVER E 57 -0.5  
DOUGLAS CITY 1SW TRINITY RIVER 52 +1.0  
ETTERSBURG 1E MATTOLE RIVER 44 +1.0  
HELENA 1SSE TRINITY RIVER 52 +0.8  
HOPLAND 4N RUSSIAN RIVER 57 -0.4  
KLAMATH 3SE KLAMATH RIVER 53 -1.3  
LEWISTON 1NE TRINITY RIVER 54 -0.2  
LEWISTON 6SE GRASS VLY CREEK 48 -0.2  
LEWISTON HATCHERY TRINITY RIVER 52 -0.1  
ORLEANS KLAMATH RIVER 52 -0.7  
UKIAH 3NNE RUSSIAN RIVER E 62 -1.6  
UPPER LAKE 2SSE MIDDLE CREEK 58 0.0  
CRESCENT CITY 8NW PACIFIC OCEAN 54  
CRESCENT CITY CRESCENT HARBOR 54  
EUREKA 11NW PACIFIC OCEAN 55  
EUREKA 17WSW PACIFIC OCEAN 55  
CAPE MENDOCINO PACIFIC OCEAN 58  
PT ARENA 19N PACIFIC OCEAN 56  
 
* QC FLAG INDICATES THE RIVER TEMPERATURE HAS CHANGED 5F  
OR MORE IN 6 HOURS OR 10F OR MORE IN 24 HOURS.  
 

 
 
WATER TEMPERATURES CAN BE COLD, EVEN IF THE AIR TEMPERATURE IS  
WARM. IMMERSION IN COLD WATER CAN BE LIFE THREATENING VERY  
QUICKLY DUE TO COLD WATER SHOCK AND LOSS OF MUSCLE CONTROL.  
IF YOU CHOOSE TO VENTURE OUT, WEAR ALL COLD WATER PROTECTIVE  
GEAR, INCLUDING A LIFE JACKET, IN THE EVENT OF AN ACCIDENT.  
 
COLD WATER EXPOSURE TIMES  
 
WATER LOSS OF EXHAUSTION/  
TEMP F MUSCLE CONTROL UNCONSCIOUSNESS  
------- -------------- ---------------  
33-40 1-3 MIN 15-30 MIN  
40-50 1-5 MIN 30-60 MIN  
50-60 10-15 MIN 1-2 HR  
60-70 30-40 MIN 2-7 HR  
70-80 1-2 HR 2-12 HR  
 

 
 
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