207  
SXUS56 KEKA 120615  
OSOEKA  
 
AREA WATER TEMPERATURES FOR NORTHWEST CALIFORNIA  
NATIONAL WEATHER SERVICE EUREKA CA  
1115 PM PDT SUN APR 11 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  
----------------- --------------- --- ----------- ----  
KLAMATH 3SE KLAMATH RIVER 54 +0.6  
ORLEANS KLAMATH RIVER 52 +0.1  
HELENA 1SSE TRINITY RIVER 55 +1.3  
LEWISTON 1NE TRINITY RIVER 50 -0.2  
LEWISTON HATCHERY TRINITY RIVER 49 -0.3  
LEWISTON 6SE GRASS VLY CREEK 48 +0.9  
BRANSCOMB 5N ELDER CREEK 50 +0.9  
ETTERSBURG 1E MATTOLE RIVER 49 -1.7 *  
HOPLAND 4N RUSSIAN RIVER 61 +0.9  
UKIAH 3NNE RUSSIAN RIVER E 53 +0.3  
UPPER LAKE 2SSE MIDDLE CREEK 58 0.0  
CRESCENT CITY 8NW PACIFIC OCEAN 46  
CRESCENT CITY CRESCENT HARBOR 48  
EUREKA 11NW PACIFIC OCEAN 49  
EUREKA 17WSW PACIFIC OCEAN 48  
CAPE MENDOCINO PACIFIC OCEAN 48  
 
* 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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