The Bureau of Reclamation – Central Valley Operations has approved the Trinity River Restoration Program’s request to raise river flows on the Trinity River from Lewiston Dam.
Please expect the following:
- Flows will increase from 300 cfs on Wednesday, Dec. 24, 2025 at 4 a.m.
- The peak of 6500 cfs will commence on Thursday, Dec. 25, 2025 at 8 p.m.
- At 10pm, Thursday, Dec. 25, 2025 Flows from Lewiston Dam will decrease to 6350 cfs
- After Thursday, a steady decrease of flow will commence reaching 2000 cfs on Wednesay, Dec. 31 at 10 a.m.
- 300 cfs baseflow at 12:01 a.m. on Monday, Jan. 12, 2026.
The purpose of a synchronized flow is to use the power of a winter storm to maintain and form river complexity. By combining dam releases with a storm event, mainstem flows help to reduce the impact of sediment deposited from tributaries like Deadwood Creek in Lewiston and recondition the riverbed for prime salmonid habitat and food production.
Recreating along the Trinity River is not advised until the storm passes and flows recede. If you live along the river (or any tributaries), please make sure to move items from the river’s edge.
Ways to Stay Informed
- Trinity Releases Email Sign-Up: http://groups.google.com/group/trinity-releases/boxsubscribe
- To follow river levels via CNFRC: https://www.cnrfc.noaa.gov/graphicalRVF.php?id=TRNC1
- To follow the storm via National Weather Service, click here: NWS Radar
- Follow Trinity River Restoration Program on Facebook
- Trinity River Restoration Program Contact: [email protected] or 530-623-1800
