The wetland view from Sunshine Lane, from west to east.
Deer Lagoon, the most extensive estuarine marsh on Whidbey Island, is located near the island's south end, on the north shore of Useless Bay. The site includes an open lagoon with dikes on both east and west, and an open channel to salt water. The substrate is sand, silt, and mud. Most of the lagoon and surrounding uplands are privately owned, and public access is prohibited.
Deer Lagoon estuary covers 950 acres It consists of freshwater marsh, open water lagoon, mudflats and salt marsh.