Columbia Riverkeeper is a nonprofit organization dedicated to protecting and restoring the water quality of the Columbia River and its ecosystems, operating from the river's headwaters to the Pacific Ocean. With an operating budget of $3.7 million and total revenue of $3.5 million for the 2024 filing year, the organization is supported by multiple significant funders, none of which contribute 50% or more of its revenue. More information can be found on their website at columbiariverkeeper.org.