Griggs County Lake Quality
North Dakota, 16 lakes — no lake here has enough monitoring data for a grade
There are 16 monitored lakes in Griggs County. The mix is varied enough that the county-level average tells you the broad strokes, not the choose-this-cabin specifics. No lake in Griggs County has enough sampling behind it for an A–F grade yet. The 16 monitored lakes below carry whatever clarity, phosphorus, and chlorophyll-a measurements exist.
Most of the county's monitored lakes are shallow, under 50 feet, which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed.
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Quick Answers for Griggs County
Planning a trip? Check special fishing regulations for Carlson-Tande Dam Lake — or check the official North Dakota fishing regulations.
All Lakes in Griggs County
16 lakes · 0 graded, 16 not rated0 graded lakes · 16 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| NRCarlson-Tande Dam LakeGriggs | NR | 5.6 ft | No recent samples | 8.1 µg/L | No recent samples | ✓ Public | |
| NRRed Willow LakeGriggs | NR | 6.4 ft | No recent samples | 6.8 µg/L | No recent samples | ✓ Public | |
| NRLake FiveGriggs | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRRound LakeGriggs | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRPhelps LakeGriggs | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRLong LakeGriggs | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRJones LakeGriggs | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRSibley LakeGriggs | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRLake AddieGriggs | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRLake JessieGriggs | NR | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public | |
| NRLake NorwayGriggs | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRLake SilverGriggs | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRLong LakeGriggs | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRPlum LakeGriggs | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRHoot-E-Too LakeGriggs | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRPickerel LakeGriggs | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded |
NR = not rated: there is not enough recent sampling to support a letter. That is EPA Integrated Reporting Category 3 (insufficient information), not a failing grade. How grading works.
Lake Match
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Other Counties in North Dakota
See how Griggs County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all United States (49 states), Canada (Ontario, Québec, Nova Scotia, British Columbia and Newfoundland and Labrador), and 38 other country hubs..
Source: EPA National Aquatic Resource Surveys, 2026.