Lake Mariam is roughly oval in shape and is on the northeast side of Winter Haven, Florida.

Brandywine Health Care Center, a nursing home, is a block north of the lake.

On the lake's southeast side is a swampy area.

[1][2] There are no public swimming areas on Lake Mariam, but a public boat ramp is on the lake's north side, to the back side of Brandywine Health Care Center.

The Hook and Bullet website says the lake contains largemouth bass, bluegill and crappie.