590
SXUS56 KEKA 181515
OSOEKA

Area Water Temperatures for Northwest California
National Weather Service Eureka CA
815 AM PDT Sat Jul 18 2026

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      60     +0.7
Calpella 5E       Russian River E  66      0.0
Douglas City 1SW  Trinity River    58      0.0
Helena 1SSE       Trinity River    61     +0.3
Hoopa             Trinity River    71     +1.0
Klamath 3SE       Klamath River    71     -0.2
Lewiston 1NE      Trinity River    50     -0.1
Lewiston 6SE      Grass Vly Creek  64     +0.2      *
Ukiah 3NNE        Russian River E  55     +0.1
Upper Lake 2SSE   Middle Creek     56      0.0
Trinidad                           51
Eureka 11NW       Pacific Ocean    54
Eureka 17WSW      Pacific Ocean    54
Cape Mendocino    Pacific Ocean    51
Pt Arena 19N      Pacific Ocean    54

* QC Flag indicates the river temperature has changed 5F
  or more in 6 hours or 10F or more in 24 hours.

&&

Don`t Let Rivers Fool You!
 - Water flows much faster and deeper a short distance from shore.
 - Cold water and swift current can overpower any swimmer.
 - Hazards like submerged trees can trap you under the surface.

Make river visits safer by following these guidelines:
 - Wear a life jacket for all river activities.
 - Find areas with very slow moving water.
 - Avoid entering fast moving water, even if it seems shallow.

$$