Lake of Patzcuaro
Lake of Patzcuaro in Unknown, Mexico has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 0.2 m visibility. Phosphorus: 726 µg/L. Chlorophyll-a (algae): 13 µg/L.
- Clarity
- 0.2 m
Why Lake of Patzcuaro has no A–F grade
Lake of Patzcuaro in Mexico is published with the authority's own measurements, not a LakeQuality letter. official authority class; not a LakeQuality A–F letter Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).
A letter on the LakeQuality scale would be an invention, not an official class. Everything below that has been measured is still reported on this page.
Monitoring: the National Water Commission of Mexico (CONAGUA), via UNEP GEMS/Water.
Lake of Patzcuaro is a lake in Unknown County, Mexico.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2020-09-30. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Lake of Patzcuaro
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Very murky, less than 0.7 ft of visibility. Phosphorus level: 726 µg/L. Chlorophyll-a: 13 µg/L. Trophic State Index: 79.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.2 m | Not graded |
| Phosphorus | 726 µg/L | Not graded |
| Chlorophyll-a (Algae) | 13 µg/L | Not graded |
| Trophic State Index (TSI) | 79 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Lake of Patzcuaro
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Fishing Lake of Patzcuaro
Frequently asked questions about Lake of Patzcuaro
What is the water quality of Lake of Patzcuaro?
- Lake of Patzcuaro in Unknown, Mexico has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 0.2 m visibility. Phosphorus: 726 µg/L. Chlorophyll-a (algae): 13 µg/L.
Is Lake of Patzcuaro safe to swim in?
- Lake of Patzcuaro has official nutrient and clarity measurements, not a bacteria swim class and not a safety clearance. Algal blooms, currents, and depth are not covered. Always check local notices before swimming.
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Where this data comes from
248 measurements from 11 monitoring stations, 2016–2020. Retrieved from UNEP GEMS/Water GFQA (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Comisión Nacional del Agua
comisionnacionaldelagua248 samples · —
Analytical methods
- GEMStat OPEN / CC BY 4.0
Monitoring station identifiers (11)
MEX01354MEX01355MEX01357MEX01359MEX01360MEX01361MEX01362MEX01364MEX01366MEX01368MEX01371
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See methodology and data sources.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2020-09-30
Monitoring stations: 11