Abbotts Lagoon is a two-stage lagoon on the northwestern coast of the Point Reyes National Seashore, southwest of Tomales Point. The upper lagoon is a fresh water impoundment which overflows into a lower brackish level with occasional winter tidal exchange. The eastern shore of the lagoon is covered with old growth northern coastal scrub including coyote bush, yellow bush lupine, sword fern and California blackberry.