Scott Dam – Enviro Updates

Round Valley Indian Tribes respond to Trump administration’s attempt to thwart Eel River dam removal

January 31, 2026

Amie Windsor, PRESS DEMOCRAT

James Russ and Joseph Parker, the former and current presidents of the Round Valley Indian Tribes, are seeking to make their reservation healthy again.

That means helping their people, they say, and specifically tackling high rates of diabetes and obesity that affect their tribal nation and many other Indigenous communities.

It also means restoring their land and the river that has been intrinsically linked with their people for millennia.

“We are Native people tied to the resources and rhythms of the Eel River,” Parker said. “Our health is connected to the river.”

Now, the tribal nation is confronting the Trump administration over the river’s future and fighting some of its regional allies to reclaim water rights that have been overlooked for a century.

Water, WildlifeEel River, endangered species, Potter Valley Project, Russian River, salmon, salmon habitat, Scott Dam, water diversion

PG&E files application to decommission Potter Valley Project

July 25, 2025

Amie Windsor, PRESS DEMOCRAT

The utility formally has filed its plans to shut down the two Northern California dams and century-old powerhouse that comprise the project.

Pacific Gas & Electric Co. has filed its formal plans with the federal government to decommission the Potter Valley Project, which includes two dams and a century-old powerhouse that together have helped connect the Eel and Russian River watersheds to provide water to cities and farms for generations.

The filing marks another step in the power company’s multiyear effort to divorce itself from the two-dam system — Scott and Cape Horn dams — that PG&E officials say has been operating at a deficit of $1 million a year.

“Today’s filing marks the next step of a thoughtful and transparent decommissioning journey for the Potter Valley Project — but it does not change our operational responsibilities or obligations,” Dave Gabbard, vice president of power generation for PG&E, said in a press release.

If approved by the feds — no such request has ever been denied — plans would kick into motion the next large dam removal project on the West Coast.

WaterEel River, endangered species, Potter Valley Project, Russian River, salmon, salmon habitat, Scott Dam

A to-be-drained lake, a PG&E plan, and the promise and peril of California’s next big dam removal

June 28, 2025

Amie Windsor, PRESS DEMOCRAT

LAKE PILLSBURY — A cool May breeze lapped across the surface of this reservoir in remote Lake County, where a couple made their way out in a boat across otherwise serene waters, taking advantage of the brightest bit of afternoon sun.

This man-made retreat, four square miles of water impounded by a dam across the upper Eel River, feels durable. It’s filled with hungry trout and black bullhead, prey for the sharp-eyed bald eagles, egrets and herons that hunt these waters.

To many of its visitors, and the several hundred people who live along its 31-mile shoreline deep within the sprawling Mendocino National Forest, Lake Pillsbury is the region’s heartbeat.

But Scott Dam, at the foot of Lake Pillsbury, and another, smaller dam on the river 12 miles downstream, have also become a headache for Pacific Gas & Electric Co., which owns both dams.

And that’s creating a controversy that’s drawn interest from everyone from those who live on Lake Pillsbury, to North Bay communities whose water supplies are linked to both dams, to federal agencies now under control of President Donald Trump.

Water, WildlifeEel River, endangered species, Lake Pillsbury, PG&E, Russian River, salmon, Scott Dam, water diversion

Op-Ed: A seismic threat to Scott Dam

April 14, 2025

Bob Schneider & Chad Roberts, PRESS DEMOCRAT

The earthquake risk at Scott Dam may be a key factor in PG&E’s decision to abandon the Potter Valley Project.

PG&E is surrendering its license for the Potter Valley Project, two dams that divert water from the Eel River to the Russian River while generating hydropower. PG&E identifies this as a business decision, because of the project’s failure to produce revenues that offset operating costs, even though the utility’s customers pay higher rates than just about everywhere else in the United States.

In our opinion, PG&E has determined to rid itself of the Potter Valley Project for a different kind of economic consideration, after determining that the Scott Dam represents an economic liability that the company cannot afford.

A key factor is the increased understanding of seismic hazards represented by the Bartlett Springs Fault Zone, which runs through Lake Pillsbury approximately 5,000 feet east of Scott Dam.

As part of the relicensing process, the Federal Energy Regulatory Commission held an auction for potential alternative licensees for the Potter Valley Project. No one made an offer, probably for the same reason PG&E doesn’t want the dams anymore: no potential owner wanted responsibility for the risk posed by the Bartlett Springs Fault.

Waterearthquake danger, Lake Pillsbury, Potter Valley Project, Scott Dam

Historic pact reached on future Eel River water flows into Russian River

February 12, 2025

Mary Callahan, PRESS DEMOCRAT

A historic agreement has been reached to manage water flow from the Eel River to the Russian River.
The deal establishes limits on diversions, focusing on fish protection.
Water rights are transferred to the Round Valley Tribes, supporting river restoration efforts.

Officials from three counties and the Round Valley Indian Tribes have reached a historic agreement that paves the way for continued diversions from the Eel River to bolster flows in the Russian River.

The agreement represents a critical development for anyone whose water comes from the Russian River.

The complex accord resulted from years of negotiations to preserve supplemental flows in the Russian River, the water lifeline for residents, ranchers and wildlife in Sonoma and Mendocino counties. The agreement also supports the restoration and fish recovery in the Eel River, which was crucial to securing support from environmental interests, tribes and Humboldt County residents.

It is, at last, the “two-basin solution” envisioned by regional stakeholders in 2019 and even earlier, when Pacific Gas & Electric first raised questions about whether to continue operating the small, aging hydroelectric plant in Potter Valley through which Eel River flows have been redirected.

The utility is now on track to decommission the plant, tear down Scott Dam, which impounds Lake Pillsbury in Lake County, and Cape Horn Dam 12 miles downstream, where Eel River water has long been diverted.

Habitats, Water, WildlifeEel River, Lake Mendocino, PG&E, Potter Valley Project, Russian River, salmon, salmon habitat, Scott Dam, water flows, watersheds

PG&E plans to remove both Potter Valley Project Dams—Mendo, Humboldt, Lake and Sonoma Fight

May 18, 2023

Sarah Reith, REDHEADED BLACKBELT

A planning group for the Russian River Water Forum, which is preparing for life after PG&E decommissions the Potter Valley Project, met for the first time yesterday in Ukiah. PG&E said in a town hall last month that its version of decommissioning means removing both dams. That’s unless an entity that is capable of running them steps forward before it submits a draft of the decommissioning plan to the Federal Energy Regulatory Commission, or FERC.

Tony Gigliotti, PG&E’s senior licensing project manager, laid out the timeline at a town hall about Scott Dam and Lake Pillsbury on April 27th.

“When we say decommissioning in this case, both dams will be removed as part of that, unless somebody comes forward with a proposal that PG&E looks at and accepts,” he said. “We need to ensure they can operate the dams after we give up ownership. In terms of timelines for the surrender application, there will be an initial draft November, 2023. A second draft, also available for public review, May 2024, and then the final application will be filed with FERC in January, 2025.”

Janet Walther, PG&E’s senior manager of hydro licensing, qualified that timeline a little.

“When PG&E submits our final surrender application to FERC, that would be the point of no return,” in terms of decommissioning, she said. “And really, the draft. We are looking to know, sooner than later, if there’s an entity interested in taking over the dam because that will change our surrender application and what we put in that surrender application. So I think we are looking and would like to see some initial proposals later this year, if there is interest. And we are talking with folks, as we have been since 2016, about potential interest in future ownership of Scott, and/or Cape Horn Dam.”

Water, WildlifeEel River, endangered species, Lake Pillsbury, PG&E, Potter Valley Project, Russian River, salmon, Scott Dam, water diversion

Russian River flows at risk: New studies show potential path forward for Potter Valley project

January 10, 2022

Mother of All Groups (MOAG), SONOMA COUNTY GAZETTE

PG&E’s license to operate the Potter Valley Project expires in April of 2022. For more information until then: http://pottervalleyproject.org/

A group of studies released last month paint a clearer picture of how Sonoma and Mendocino counties can meet future water needs while reducing environmental impacts in the face of a decision by PG&E to cease operation of an aging hydroelectric power project.

The Potter Valley Project (PVP) is located approximately 15 miles north of the City of Ukiah on the Eel River. The Project’s facilities include two dams, a diversion tunnel and a hydroelectric plant located in Potter Valley in the headwaters of the Russian River. The 100-year-old project produces little electricity by modern standards and is a net money loser, but Sonoma and Mendocino County water users have grown accustomed to the water diverted by the Project which flows from the Eel River into the Russian River watershed where it is stored in Lake Mendocino – ultimately flowing down the Russian River where it benefits agricultural interests and residents.

This arrangement was put in jeopardy when PG&E announced in 2019 that it would not seek to renew its federal license to operate the Project, which expires in April 2022. In recent weeks, PG&E also notified the public that the Project’s powerhouse had suffered a transformer failure, which eliminated its ability to generate electricity and reduced water diversions into the Russian River. Given PG&E’s goal to dispense with the Project, it is unlikely the powerhouse will be repaired or that the Project will ever function as it once did.

In response to PG&E’s decision to divest from the Project, a diverse group of stakeholders called the Two-Basin Partnership was formed to develop a plan to take over and modify the Project in a way that reflects regional needs and priorities in both basins. Among these priorities are fisheries recovery in the Eel River – one of the few major rivers left in California that has the potential to support abundant, self-sustaining wild populations of salmon and steelhead – and water supply reliability for Russian River water users. The Partnership’s proposed plan included the removal of Scott Dam, restoration of the drained Lake Pillsbury footprint and modifications or the replacement of Cape Horn Dam to maintain a diversion.

Water, WildlifeEel River, endangered species, hydroelectric, PG&E, Potter Valley Project, Russian River, salmon, Scott Dam, steelhead, water supply