La Angostura Dam
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CONAGUA publishes the water-quality measurements for La Angostura Dam. Here is what has been measured.
- Limited data
La Angostura Dam in Mexico has official water-quality measurements, shown as reported. Water clarity: 1.9 m visibility. Phosphorus: 191.1 µg/L. Chlorophyll-a (algae): 3.7 µg/L.
How La Angostura Dam is classified
La Angostura Dam in Mexico is published with the authority's own measurements and class. The measurements here are published by the agency that samples the lake, as reported. Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).
LakeQuality publishes no grade of its own beside it. Everything below thathas been measured is reported on this page.
Monitoring: the National Water Commission of Mexico (CONAGUA), via UNEP GEMS/Water.
La Angostura Dam is a lake in Unknown County, Mexico.
Source: the National Water Commission of Mexico (CONAGUA), via UNEP GEMS/Water — not the EPA Water Quality Portal, last sampled 2021-09-21. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether La Angostura Dam is safe to swim in today is a call for the National Water Commission of Mexico (CONAGUA), via UNEP GEMS/Water and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for La Angostura Dam
These are the measurements CONAGUA publishes for La Angostura Dam. More on the source.
Murky, only visible to about 6.2 ft. Phosphorus 191.1 µg/L. Chlorophyll-a 3.7 µg/L. TSI 58.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1.9m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 191µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 3.7µg/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. | 58 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
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Frequently asked questions about La Angostura Dam
Where is La Angostura Dam?
- La Angostura Dam is a lake in Mexico. This page reports official water-quality measurements, shown as reported.
What is the water quality of La Angostura Dam?
- La Angostura Dam in Mexico has official water-quality measurements, shown as reported. Water clarity: 1.9 m visibility. Phosphorus: 191.1 µg/L. Chlorophyll-a (algae): 3.7 µg/L.
Is La Angostura Dam safe to swim in?
- La Angostura 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
24 measurements from 1 monitoring station, 2016–2021. Retrieved from UNEP GEMS/Water GFQA (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Comisión Nacional del Agua
comisionnacionaldelagua24 samples · —
Analytical methods
- GEMStat OPEN / CC BY 4.0
Monitoring station identifiers (1)
MEX02429
Authority classifications are shown as the authority published them. See where the data comes from and data sources.