Trinity River Restoration Program - August Newsletter

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Abel, Kiana

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Aug 27, 2025, 3:46:17 PM (8 days ago) Aug 27

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A spider caught on camera during recent monitoring along the Trinity River. [Oliver Rogers, Trinity River Restoration Program]

River Riffle Newsletter - August

Current Conditions
Program Updates
Trinity River Watershed Spotlight
Upcoming Meetings and Events
Reading, Listening, Watching

Current Conditions

Flow

The Bureau of Reclamation is implementing elevated flows for the Hoopa Valley Tribe’s biennial Boat Dance ceremony. Elevated flows began Aug. 22 and will last through Aug. 30. Changes to flow from Lewiston Dam have been announced via email.

To subscribe to future emails that announce Lewiston Dam change orders, please click the following hyperlink: Subscribe by clicking here.

Fish Health

The Junction City Weir staff have partially pulled operations in anticipation of ceremonial releases from Lewiston Dam. During the Aug. 20 Klamath Fish Health Assessment Team meeting, fish biologists noted that Trinity River Spring run chinook are a few weeks out from spawning and although monitors at the Junction City Weir are documenting about 34.5% bacterial gill insult rate, subsequent mortality in adults has not been observed in pre-spawn mortality surveys or at the weir. Continued high insult rates are leading scientists to question the “why” since Trinity River temperature, turbidity and flow remain favorable for fish health.

Photo: This map presents the risk of disease for fish populations in the Klamath Basin below Iron Gate Dam in a visual format. Click here to read the 2025 reports.

Temperature

Keep tabs on Trinity River temperatures by following the USGS gauge links below.

Flow

Keep tabs on Trinity River flow by following the USGS gauge links below.

Program Update

Trinity River Watershed Environmental Assessment complete – Finding of No Significant Impact

To help increase restoration projects within Trinity River watershed and reduce red tape, the Trinity River Restoration Program, Bureau of Land Management and the US Forest Service have released the Trinity River Watershed Restoration Project Environmental Assessment. The environmental assessment covers projects related to;

instream habitat restoration
upslope habitat restoration
road maintenance, rehabilitation, and decommissioning activities

The environmental assessment is available to organizations whose restoration projects are funded by or are on land managed by TRRP/Reclamation, BLM, or the USFS and are within the project area and scope. Projects may require further site-specific environmental investigations, depending on the federal agencies involved in each individual project. Click for more information.

Trinity River Watershed | Plant Spotlight

Poison Oak (Toxicodendron diversilobum) and Skunk Brush (Rhus trilobata)

Think all “leaves of three” should be avoided? Not so fast. This article dives into the life histories of poison oak (Toxicodendron diversilobum) and its close look-alike, skunk brush (Rhus trilobata), highlighting how to spot the differences, their roles in local ecosystems, and the cultural knowledge tied to each. Use it as a field guide to sharpen your observation skills next time you’re out on the trail — because the forest is full of stories waiting to be read, leaf by leaf. Continue Reading

Upcoming Meetings and Events

For a full list of events, click to view the TRRP Calendar.

Sunday, Sept. 7, 9am – Trinity River Fall Clean-Up 2025

Junction City, Ca. – Burnt Ranch, Ca.

Join a crew of do-gooders at Pigeon Point Group Campground as we float, walk, and retrieve trash from our beloved Wild and Scenic Trinity River from Junction City to Burnt Ranch.

The Trinity County RCD will be providing morning snacks and refreshments, trash collecting equipment and PPE, shuttle vehicles to and from river accesses, group rafting opportunities provided by 6 Rivers Rafting and Bigfoot Rafting, and a post event BBQ to celebrate a job well done.

Registration is encouraged. Register by clicking here.

Sept. 17 – 9am - 4pm | Quarterly TMC Meeting

Meeting Details

In Person: Trinity River Restoration Program in Weaverville, Ca.

Virtual: via Microsoft Teams

Join the meeting

Meeting ID: 293 807 766 572

Passcode: KE7YR33m

Sept. 24, 6pm | Science on Tap

Trinity County Brewing Co.

This month’s Science on Tap features a presentation from Nate Libal, Senior Environmental Scientist Specialist – Wolf, who will present: “Gray Wolves – Ecology and Management in California”

Nate is a Wolf Specialist for the California Department of Fish and Wildlife. Prior to joining CDFW in 2024, he spent 10 years working for wolf management programs in Oregon and Wisconsin.

This presentation will cover the recent history of wolves in California, including current numbers, distribution and ongoing research. It will also cover some of the challenges of wolf management with an emphasis on wolf/livestock conflict. Event Details

Oct. 4, 9am – 4pm | Salmon Meets Harvest Festival

Highland Art Center Meadow in Weaverville

Join us on Saturday, October 4, from 9:00 a.m. to 4:00 p.m. at the Highland Arts Center Meadow on Main Street, Weaverville, for the Salmon Meets Harvest Festival, a day of celebration that brings together the 27th Annual Trinity River Salmon Festival and the 22nd Annual Harvest Festival! These two beloved events are again uniting and offering a unique blend of festivities, flavors, and cultural celebrations. We hope to see you there!