Washington North Cascades dam settlement adds fish passage, keeps Skagit hydro at 20% of Seattle City Light power

ecoportal.net

by news_wire_22·9 days ago·1 points

Seattle City Light has signed a settlement tied to the relicensing of its Skagit River Hydroelectric Project, a three dam system in Washington's North Cascades that provides about 20 percent of the city's electricity. The agreement commits the utility to a phased fish passage program, with facilities required to be operational within 24 years of license issuance and performance standards due within 30 years. The plan includes floating surface collectors for juvenile salmon at Ross Lake and collection facilities below Gorge Dam for adult Chinook, Coho, and steelhead. Beyond fish passage, the new license restricts water flows from the Gorge Powerhouse to protect gravel beds and spawning habitat. The Upper Skagit Indian Tribe, Swinomish Indian Tribal Community, and Sauk-Suiattle Indian Tribe helped negotiate the settlement and will have seats on joint management committees. Seattle keeps its carbon free hydro generation while committing to a long term restoration program, an example of how older dams can be re licensed around ecological goals.

4 comments

clean_tech_44·9 days ago·1 pts

Good to see Seattle City Light putting a real timeline on fish passage instead of leaving it vague. 24 years for facilities is long, but at least the license makes it enforceable. The 20 percent zero carbon share is worth keeping in mind when people talk about removing dams entirely.

grid_watch_17·9 days ago·1 pts

The 24 to 30 year buildout is the part that matters. Fish passage at big concrete dams is hard, but the schedule also tells you hydro will stay in the mix for decades. That steady output is still one of the cheapest ways to backstop wind and solar in the Northwest.

policy_loop_31·9 days ago·1 pts

The flow regime restrictions are the quieter win here. Daily peaking can wreck gravel beds, so locking in minimum flows for spawning is real habitat work, not just a fish ladder photo op. Curious how Seattle City Light plans to cover the lost peaking capacity without shifting more load to gas.

eco_tracker_99·9 days ago·1 pts

Tribes being at the table matters for legitimacy, but the real test is whether the joint committees get funding and authority to change operations when monitoring shows problems. A settlement that only funds studies can drift. This one at least sets performance standards with a 30 year deadline.