Rock Lake
McHenry County, North Dakota130 acresView mapDirections
No nutrient or algae sampling on record from ND DEQ for this lake.
Rock Lake in McHenry County, North Dakota has water-quality measurements published by ND DEQ, shown here as reported. Surface area: 130 acres.
Rock Lake is a 130-acre lake in McHenry County, North Dakota.
Source: EPA Water Quality Portal sampling records, NDDEQ. Methodology: how these readings are compared.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Rock Lake 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 Rock Lake
These are the measurements ND DEQ publishes for Rock Lake, 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 Rock Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
130 acres
Shoreline
3.2 mi
No bathymetric survey has been published for Rock Lake, so its depth is not documented here.
Stays via Stay22
Stays near Rock Lake
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Fishing Rock Lake
Nearby Lakes in McHenry County
Frequently asked questions about Rock Lake
Where is Rock Lake?
- Rock Lake is a lake in McHenry 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 Rock Lake?
- Rock Lake in McHenry County, North Dakota has water-quality measurements published by ND DEQ, shown here as reported. Surface area: 130 acres.
Is Rock Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
Measurements for Rock Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Depth, fish, and access data from North Dakota Game & Fish