Trinity River Basin
Major California river corridor • Headwaters to confluence • Premier paddling, fishery & agricultural water resource
Corridor Flow Overview
The Trinity River in California is monitored by 1 active USGS river gauge. The premier fly-fishing tailwater of Northern California. Flowing below Lewiston Dam, it offers clear cold water, year-round trout fishing, and famous runs of fall-run Chinook salmon and winter steelhead.
Corridor Hydrological Gauges
Sequenced upstream to downstream along the primary river stem.
USGS ID
#11525500
Discharge
310 cfs
Stage
13.80 ft
Condition
Flood Risk| Station & Location | USGS ID | Discharge (CFS) | Stage (FT) | Condition Verdict | Actions |
|---|---|---|---|---|---|
| Trinity River at Lewiston, CA | #11525500 |
Basin Geographic Map
Real-time spatial visualization of all reporting stations on Trinity River.
Operate a rafting company, guide service, or shuttle on Trinity River?
Feature your river operations directly to local boaters and anglers checking real-time conditions.
Frequently Asked Questions — Trinity River Water Levels & Flow
Direct answers about USGS river gauges, seasonal flow rates, and river conditions along the Trinity River in California.
What are the current water levels and conditions on the Trinity River in California?
ClearGauge monitors real-time water levels and streamflow across 1 USGS hydrological station along the Trinity River in California. Streamflow stage (ft), discharge (CFS), and historical percentile verdicts are updated every 15 minutes.