Jamestown Reservoir
Stutsman County, North Dakota2,568 acresView mapDirections
No nutrient or algae sampling on record from ND DEQ for this lake.
- Impaired · Nutrients (phosphorus, nitrogen)
- 38 ft max depth
Jamestown Reservoir in Stutsman County, North Dakota has water-quality measurements published by ND DEQ, shown here as reported. Maximum depth: 37.7 ft. Surface area: 2568 acres.
Jamestown Reservoir is a 2,568-acre lake in Stutsman County, North Dakota with a maximum depth of 38 feet (15-foot average).
Source: EPA Water Quality Portal sampling records, NDDEQ. Methodology: how these readings are compared.
What Jamestown Reservoir is good for
From access and monitoring records, not editorial picks.
- Deep water37.7 ft surveyed max depth
- Big water2,568 acres
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Jamestown Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Jamestown Reservoir is safe to swim in today is a call for the North Dakota Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Jamestown Reservoir
These are the measurements ND DEQ publishes for Jamestown Reservoir, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. TSI undefined.
Ask about Jamestown Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
37.7 ft
Average depth
15.1 ft
Surface area
2,568 acres
Shoreline
44.8 mi
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Fishing Jamestown Reservoir
EPA Impairment Status
Jamestown Reservoir is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit ND-10160001-002-L_00 · Official waterbody report
Nearby Lakes in Stutsman County
Frequently asked questions about Jamestown Reservoir
Where is Jamestown Reservoir?
- Jamestown Reservoir is a lake in Stutsman County, North Dakota. Its water-quality measurements are published by ND DEQ and shown on this page as reported.
What is the water quality of Jamestown Reservoir?
- Jamestown Reservoir in Stutsman County, North Dakota has water-quality measurements published by ND DEQ, shown here as reported. Maximum depth: 37.7 ft. Surface area: 2568 acres.
Is Jamestown Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Jamestown Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Jamestown Reservoir?
- Jamestown Reservoir has a maximum depth of 37.7 feet and an average depth of 15.1 feet. The lake covers 2568 acres.
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Where this data comes from
Measurements for Jamestown Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Depth, fish, and access data from North Dakota Game & Fish