Mallard Island is a small island in Suisun Bay, at the confluence of the Sacramento and San Joaquin rivers.[2][3][4][5][6][7][8][9][10][11][12][13][14] It is part of Contra Costa County, California. Its coordinates are 38°02′31″N 121°55′07″W[1], and the United States Geological Survey measured its elevation as 3 ft (0.91 m) in 1981.[1] It appears in a 1953 USGS map of the area.[15]
Mallard Island Mallard Island Mallard Island | |
Geography | |
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Location | Northern California |
Coordinates | 38°02′31″N 121°55′07″W[1] |
Adjacent bodies of water | Suisun Bay |
Highest elevation | 3 ft (0.9 m)[1] |
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United States | |
State | California |
County | Contra Costa |
Map: Islands of Suisun Bay and the Sacramento–San Joaquin River Delta | |
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