Gervais Lake

The largest lake in the Phalen Chain, popular with anglers and boaters.

Gervais Lake is the second lake in the Phalen Chain of Lakes and is used for a variety of recreational purposes, including swimming, skiing and boating. There is a public boat access from Spoon Lake and a Ramsey County Parks swimming beach and park adjacent to the lake. The lake receives flows from Gervais Creek, Kohlman Lake and runoff from its direct tributary area.

Lake facts

  • Tributary area: 893 acres
  • Downstream waterbody: Keller Lake
  • DNR code: 62‑0007P (click for LakeFinder data)
  • Surface area: 234 acres
  • Average depth: 22 feet
  • Maximum depth: 41 feet
  • MPCA designations: Deep lake; impaired for mercury; at risk for chloride
  • Accountable municipalities: Little Canada, Maplewood, Ramsey County
  • Nutrient water quality classification: Stable

Water Quality

The following graphs show the growing season average measurements in Gervais Lake for chlorophyll-a, total phosphorus and secchi transparency. Gervais Lake is sampled for water quality parameters every two weeks from May through September. The graphs show the lake has historically had very good water quality and is considered in a stable condition.

Past projects

Gervais Lake, Keller Lake, Kohlman Lake, Lake Phalen

Lake Phalen Chain Carp Management

The Phalen Chain of Lakes: Groundbreaking carp research and effective management through a partnership with the University of Minnesota