Deer Lagoon Restoration Assessment
Deer Lagoon near Admiralty Inlet, Whidbey Island
A series of dikes has truncated tidal influence in the western lobe of Deer Lagoon, limiting its value as habitat for juvenile salmon. These dikes have resulted in the loss over 450 acres of potential salt marsh and mudflat habitat in the western lobe of Deer Lagoon. These dikes have also degraded ~100 acres of existing salt marsh on their seaward side, through decreased tidal prism. The reduction of flushing power (sediment transport capacity) from lost tidal prism has decreased the width and depth of the opening of the lagoon, as well as decreasing channel depths throughout the remnant marsh.
Goals & Objectives:
The Wild Fish Conservancy will evaluate the feasibility and impact of multiple restoration strategies for Deer Lagoon near Admiralty Inlet with the goal of increasing the amount and quality of salt marsh habitats open to juvenile salmon. The conservancy will assess restoration strategies using hydrodynamic models that will simulate water elevations, erosion and deposition. The conservancy also will develop a partial design for a restoration project. A series of dikes has limited tidal access to Deer lagoon, resulting in the loss of more than 450 acres of potential salt marsh and mudflat habitat for juvenile salmon. These dikes also have degraded about 100 acres of existing salt marsh.
Primary Habitats Impacted By Project:
Estuarine & Nearshore Habitat - Salt marsh habitats available to juvenile salmon - Deer Lagoon near Admiralty Inlet, Whidbey Island.
Wild Fish Conservancy
Budget or Project Cost:
Puget Sound Acquisition & Restoration
Salmon State Projects
- Washington State Recreation and Conservation Office (RCO)
- Island County