Skagit River Hydroelectric Project

Summer 2024 | Relicensing News


This newsletter provides updates about the federal relicensing of the Skagit Hydroelectric Project. More information is available on the project website or by emailing the project team at scl_skagitrelicensing@seattle.gov.

How Climate Change is Reshaping Recreation

in the Skagit


If you enjoy hiking, boating, or backpacking in the Skagit area, you’ve probably noticed how recreation opportunities near the Skagit Hydroelectric Project are changing. Climate change and less predictable weather are having an impact on how and when we can enjoy the natural beauty of the area. Here’s what you need to know:

Photo Credit: NPS/Deby Dixon

Lower Lake Levels Make Access Challenging

One notable change affecting recreation is lower lake levels. Less water in Ross Lake is making it tougher to access some of the area’s beloved boat-in campsites, with some locations becoming completely unreachable at times. This doesn’t only affect your camping plans – it complicates the maintenance of needed facilities like toilets, adding another challenge for those exploring the area.


To understand why lake levels are lower than we’re used to, it’s important to remember that City Light manages the Skagit Project with four key considerations in mind: flood control, fish flows, recreation, and power generation.


City Light must let water out of Ross Lake by November of each year to create storage for spring runoff and protect people, property, and the environment from flooding. This is so important, it’s part of the project’s Federal Energy Regulatory Commission (FERC) license.


“Once the flood control period has passed,” explains Mike Aronowitz, City Light Senior Resource Planner and Recreation Lead, “we refill the reservoir for recreation and aesthetic purposes, while also ensuring there is enough water downriver for fish.”


In the past, inflow from snowmelt peaked at the same time as the reservoir refill period, but that has changed in recent years. Currently, climate change is resulting in less snow in winter, earlier snowmelt, and less spring precipitation.


“We’re not getting the inflows we need, when we need them, to fill the lake back to historical levels,” says Aronowitz.


Wildfire and Air Quality: Stay Informed, Stay Safe

Because of warmer and drier conditions caused by climate change, we are also experiencing more frequent and intense wildfires. Wildfires can be unpredictable and deadly, so it’s essential that visitors in the area stay informed of quickly changing conditions. Harmful wildfire smoke also poses a range of problems to those looking to enjoy the area. Even at low levels of smoke, the majestic views of the North Cascades may be hard to see, and some people may find it hard to breathe. More intense fires can make outdoor activities unhealthy for everyone. To reduce the risk of wildfire, campfires are now off-limits in the Project area and across the state for most of summer.


In recent years, wildfire season has also affected City Light’s Skagit Tours, resulting in the cancellation of these popular and fun educational opportunities. Fires have also closed the North Cascades Highway, limiting access to popular hikes in the area.


Good News for Whitewater Boaters

It’s not all bad news! Whitewater boating on the Skagit River is thriving. While lake levels may be low, downstream flows are carefully managed to support fish populations, allowing the whitewater season to extend well into the summer. This makes the Skagit a great spot for late-season outings, when other nearby rivers are too low.


Adaptive Management: A Flexible, Science-Based Approach

As climate change continues to affect the entire state, including the area around the Skagit Project, the future of recreation will depend on our ability to adapt. The next FERC license will take an adaptive management approach, recognizing the need to remain flexible as we face the unknowns of the next 30 or 50 years. Continuous scientific study, monitoring, and adjustments will help us protect the ecosystem, preserve access to nature, reduce wildfire risks, and protect air quality. City Light looks forward to continuing to partner with Tribes, agencies, and nonprofits to help ensure that future generations can continue to enjoy the Skagit’s natural beauty and recreational bounty.

Photo Credit: USFS/Dave Bickford

The Fish Run Report


With steelhead season over and the summer Chinook run under way, we checked in with Erin Lowery, City Light Fisheries Biologist, for a brief update on this year’s fish runs.  


“The steelhead season was good in the Upper Skagit River,” says Lowery. In a typical steelhead season, which runs from about March 15-June 15, mainstem spawning steelhead will construct between 100 or 200 redds, or nests. “This year we observed 183 redds which is in the high range for the Upper Skagit mainstem.” Reports from fisheries co-managers indicate that the run was above average for the Skagit River as a whole.  


As for Chinook, Lowery says, “We’ll see how things shake out. Currently the forecast is for a typical run of Chinook and an above average coho run. All in all, pretty good expectations for the salmon season.” 

Photo Credit: USFS/Dave Bickford

After the Sourdough Fire, HESCO barriers were constructed and strategically installed along areas vulnerable to landslides.

2024 Wildfire Season Update: Response and Preparedness


Last summer’s Sourdough Fire, which began in late July and continued well into fall, burned nearly 7,000 acres, forced repeated closures of Highway 20, prompted precautionary measures like the evacuation of the North Cascade Institute’s Environmental Learning Center (ELC), and caused City Light to take two of the Skagit Project’s three dams offline for several days.


This year, fire season has been much less eventful in the Skagit Project area, except for occasional air quality concerns and Highway 20 closures due to the Easy Fire west of Mazama.


But just because it’s a less active fire season doesn’t mean City Light stops its wildfire management work. The utility is always working to minimize potential wildfire damage by caring for the forests and preparing Skagit Project staff to respond and recover quickly from wildfire.


When City Light was recovering from the Sourdough Fire, for example, we worked with the Washington Department of Natural Resources to complete a geological survey of the area and identify the potential for landslides in areas where the fire left large burn scars. Based on those findings, City Light installed a variety of protective barriers to help prevent landslides and keep large logs out of the reservoirs. The town of Diablo is also closed to the public. This measure temporarily blocks access to Gorge Lake Campground and boat launch, as well as trailheads for Sourdough Mountain, but is necessary to protect staff and the public from landslides.


Minimizing the harm of future fires includes removing dry and dead trees—tinder for future fires—from rights of way, critical infrastructure, and the area surrounding the ELC. The Newhalem Fire Brigade is also poised to take action if a fire does break out in the Project area.



To learn more about long-term fire risk management, read City Light’s Wildfire Risk Reduction Strategy.

Did You Know?

Have you ever wondered how Ross and Diablo lakes get that beautiful turquoise hue? This color is caused by glacial flour, tiny rock particles reflecting sunlight, and is most vibrant on sunny days during glacial melt. 

Top 3 Skagit Relicensing Resources

Want to learn more about relicensing? Check out these resources:

  1. Learn how the Skagit River’s flow is managed to protect communities, provide access to renewable power, and deliver stable rates for customers.
  2. Take a deeper look at City Light’s science-based fish passage program.
  3. Monitor progress—our quarterly report to FERC is available on our project page.

Our Mission

Seattle City Light provides our customers with affordable, reliable and environmentally responsible energy services.

City Light's Hydroelectric Resources

Learn more about the Skagit River

Hydroelectric Project and other City Light hydroelectric resources.

Skagit Relicensing Project Resources

Learn more about the relicensing process, including the library of public documents.

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