Eddy County Lake Quality
New Mexico, 15 lakes — no lake here has enough monitoring data for a grade
There are 15 monitored lakes in Eddy 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 Eddy County has enough sampling behind it for an A–F grade yet. The 15 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 Eddy County
Planning a trip? Check special fishing regulations for Six Mile Dam Lake — or check the official New Mexico fishing regulations.
All Lakes in Eddy County
15 lakes · 0 graded, 15 not rated0 graded lakes · 15 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| NRSix Mile Dam LakeEddy | NR | 1.6 ft | No recent samples | 110.3 µg/L | No recent samples | Not recorded | |
| NRLake Carlsbad DeepEddy | NR | 2.7 ft | No recent samples | 2.7 µg/L | No recent samples | ✓ Public | |
| NRBrantley Reservoir DeepEddy | NR | 3.9 ft | No recent samples | 21 µg/L | No recent samples | Not recorded | |
| NRBrantley Reservoir ShallowEddy | NR | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public | |
| NRCave LakeEddy | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRJahie LakeEddy | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRFlat LakeEddy | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRSalt LakeEddy | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRTamarisk FlatEddy | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRLindsey LakeEddy | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRWillow LakeEddy | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRQueen LakeEddy | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRHorseshoe LakeEddy | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRHackberry LakeEddy | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRBrainard LakeEddy | 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 New Mexico
See how Eddy 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.