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Red Alder Basal Area, by Stream Reach, for the Pacific Northwest

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: July 16, 2025 | Last Modified: 20201117
Red alder (Alnus rubra) are a common component of forests in Western Oregon and Washington. This file provides an estimate of red alder basal area in western Oregon and Washington for each incremental catchment of the USGS Pacific Northwest SPARROW model.

Complete Metadata

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