Description: Essential Salmonid Habitat (ESH) are those streams necessary to prevent the depletion of indigenous anadromous salmonid species during their life history stages of spawning and rearing, and any adjacent off-channel rearing or high-flow refugia habitat with a permanent or seasonal surface water connection to an ESH stream.The ESH designation protects the streams where salmonid species lay eggs and where young fish grow before traveling to the ocean. Chum, sockeye, Chinook, and coho salmon, as well as steelhead and coastal cutthroat trout are all sensitive, threatened, or endangered salmonid species whose habitat may be designated as essential.The Department of State Lands maintains Oregon's official ESH map. The map uses scientific data from the Oregon Department of Fish and Wildlife to identify areas that are critical for salmonids to thrive and require a permit to remove or fill any material. The ESH map is updated every year, as long as new or updated data are available. For questions or to learn more, please visit: https://www.oregon.gov/dsl/wetlands-waters/Pages/esh.aspx