SXUS56 KEKA 161215 OSOEKA Area Water Temperatures for Northwest California National Weather Service Eureka CA 515 AM PDT Thu Apr 16 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 48 -0.3 Calpella 5E Russian River E 56 +0.5 Douglas City 1SW Trinity River 48 -1.7 Helena 1SSE Trinity River 49 -2.9 Klamath 3SE Klamath River 53 -0.7 Lewiston 1NE Trinity River 49 +0.6 Lewiston 6SE Grass Vly Creek 48 -2.3 Ukiah 3NNE Russian River E 54 -0.1 Upper Lake 2SSE Middle Creek 57 -0.1 Crescent City Crescent Harbor 55 Trinidad 53 Eureka 11NW Pacific Ocean 53 Eureka 17WSW Pacific Ocean 53 Cape Mendocino Pacific Ocean 55 Pt Arena 19N Pacific Ocean 53 Arena Cove Arena Cove 52 * 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. $$