1-859-69 California, Sonoma County, San Pablo Bay National Wildlife Refuge, Napa Slough
1-859-96 California, Sonoma County, San Pablo Bay National Wildlife Refuge, Pickleweed
1-860-14 California, Sonoma County, San Pablo Bay Nat Wildlife Refuge, water sampling
1-860-4 California, Sonoma County, San Pablo Bay National Wildlife Refuge, Pond 7A
1-98-17 California, Sonoma County, Marsh, Tubbs Island
2-350-19 California, San Francisco Bay, San Pablo National Wildlife Refuge, slough at sunset
2-351-95 California, San Francisco Bay, San Pablo National Wildlife Refuge, slough at sunset
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©David Sanger or individual photographer. All rights reserved.