Monastery Lake Deep
San Miguel County, New MexicoView mapDirections
NMED publishes the water-quality measurements for Monastery Lake Deep. Here is what has been measured.
- Limited data
Monastery Lake Deep in San Miguel County, New Mexico has water-quality measurements published by NMED, shown here as reported. Water clarity: 4.1 ft visibility. Chlorophyll-a (algae): 7.8 µg/L.
Monastery Lake Deep is a lake in San Miguel County, New Mexico.
Source: EPA Water Quality Portal sampling records, NMED, last sampled 2019-09-18. Methodology: how these readings are compared.
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Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Monastery Lake Deep is safe to swim in today is a call for the New Mexico Environment Department and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Monastery Lake Deep
These are the measurements NMED publishes for Monastery Lake Deep, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 4.1 ft. Chlorophyll-a 7.8 µg/L. TSI 54.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 4.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | 7.8µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 54 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
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Frequently asked questions about Monastery Lake Deep
Where is Monastery Lake Deep?
- Monastery Lake Deep is a lake in San Miguel County, New Mexico. Its water-quality measurements are published by NMED and shown on this page as reported.
What is the water quality of Monastery Lake Deep?
- Monastery Lake Deep in San Miguel County, New Mexico has water-quality measurements published by NMED, shown here as reported. Water clarity: 4.1 ft visibility. Chlorophyll-a (algae): 7.8 µg/L.
Is Monastery Lake Deep safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Monastery Lake Deep across LakeQuality
22.4 mi away · recorded at 138°F
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Where this data comes from
3 measurements from 1 monitoring station, 2019. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- NM Environmental Dept./SWQB
21NMEX_WQX3 samples · 2019
Analytical methods
- 10200 H 2 ~ Chlorophyll a-b-c Determination by spectrophotometer
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.