La Barley Dam
La Barley Dam in Unknown, Mexico has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 0.3 m visibility. Chlorophyll-a (algae): 16.5 µg/L.
- Clarity
- 0.3 m
Why La Barley Dam has no A–F grade
La Barley Dam 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 and algae (chlorophyll-a), but not phosphorus.
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.
La Barley Dam is a lake in Unknown County, Mexico.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2020-09-24. 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 La Barley Dam
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Very murky, less than 1 ft of visibility. Chlorophyll-a: 16.5 µg/L. Trophic State Index: 68.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.3 m | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | 16.5 µg/L | Not graded |
| Trophic State Index (TSI) | 68 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near La Barley Dam
Compare lakeside cabins, hotels, and vacation rentals near La Barley Dam in Unknown, Mexico — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
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Fishing La Barley Dam
Frequently asked questions about La Barley Dam
What is the water quality of La Barley Dam?
- La Barley Dam in Unknown, Mexico has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 0.3 m visibility. Chlorophyll-a (algae): 16.5 µg/L.
Is La Barley Dam safe to swim in?
- La Barley Dam 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
15 measurements from 1 monitoring station, 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
comisionnacionaldelagua15 samples · —
Analytical methods
- GEMStat OPEN / CC BY 4.0
Monitoring station identifiers (1)
MEX00865
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: 2020-09-24
Monitoring stations: 1