2023
DOI: 10.1007/s12237-023-01229-3
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Shallow-Water Habitat in the Lower Columbia River Estuary: A Highly Altered System

William J. Templeton,
David A. Jay,
Heida L. Diefenderfer
et al.

Abstract: Decreases in shallow-water habitat area (SWHA) in the Lower Columbia River and Estuary (LCRE) have adversely affected salmonid populations. We investigate the causes by hindcasting SWHA from 1928 to 2004, system-wide, based on daily higher high water (HHW) and system hypsometry. Physics-based regression models are used to represent HHW along the system as a function of river inflow, tides, and coastal processes, and hypsometry is used to estimate the associated SWHA. Scenario modeling is employed to attribute … Show more

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