Lake Carlsbad Deep
Eddy County, New MexicoView mapDirections
Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.
- Impaired · Fish consumption advisory
- Public access
- Limited data
Lake Carlsbad Deep in Eddy County, New Mexico is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 2.7 ft visibility. Chlorophyll-a (algae): 2.7 µg/L.
- Clarity
- 2.7 ft
- Chlorophyll-a
- 2.7 µg/L
- Public access
- Yes
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Stays near Lake Carlsbad Deep
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Watch Lake Carlsbad Deep’s letter
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Why Lake Carlsbad Deep has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Lake Carlsbad Deep, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity and algae (chlorophyll-a), but not phosphorus.
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by NMED and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lake Carlsbad Deep is a lake in Eddy County, New Mexico. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, NMED, last sampled 2022-04-13. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Lake Carlsbad Deep is listed impaired under Clean Water Act §303(d) (IR 5) for fish consumption advisory, pCBs. Check local advisories before you swim.
Water quality measurements for Lake Carlsbad Deep
These readings exist but are not enough for an A–F grade — see why.
Very murky, less than 2.7 ft of visibility. Chlorophyll-a 2.7 µg/L. TSI 52.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.7 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | 2.7 µg/L | Not graded |
| Trophic State Index (TSI) | 52 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Fishing Lake Carlsbad Deep
EPA Impairment Status
Lake Carlsbad Deep is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit NM-2203.B_00 · Official waterbody report · Matched by proximity (1.57 km)
Graded lakes near Lake Carlsbad Deep
Lake Carlsbad Deep has no grade, but these lakes within a short drive do.
Nearby Lakes in Eddy County
Frequently asked questions about Lake Carlsbad Deep
Where is Lake Carlsbad Deep?
- Lake Carlsbad Deep is a lake in Eddy County, New Mexico. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Lake Carlsbad Deep?
- Lake Carlsbad Deep in Eddy County, New Mexico is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 2.7 ft visibility. Chlorophyll-a (algae): 2.7 µg/L.
Is Lake Carlsbad Deep safe to swim in?
- The letter is not a swimming clearance. Lake Carlsbad Deep is listed impaired under Clean Water Act §303(d) (IR 5) for fish consumption advisory, pCBs. Check local advisories before you swim.
Explore Lake Carlsbad Deep across LakeQuality
2 thermal springs within 17 mi, nearest Indian Big Spring
Species activity outlook by water temperature and season
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Planning a trip around Carlsbad Caverns?
Lake Carlsbad Deep is about 28 miles from Carlsbad Caverns National Park. Crowds there swing hard by season, so the month you pick changes both how busy the park is and what lodging costs.
Best time to visit Carlsbad Caverns →More New Mexico Lake Rankings
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Where this data comes from
12 measurements from 1 monitoring station, 2013–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- NM Environmental Dept./SWQB
21NMEX_WQX12 samples · 2013–2022
Analytical methods
- Phosphorus by Colorimetry
- 10200 H 2 ~ Chlorophyll a-b-c Determination by spectrophotometer
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database