Where is Atlanga Cortina Dam?

Atlanga Cortina Dam is a lake in Mexico. This page reports official water-quality measurements, shown as reported.

Is Atlanga Cortina Dam safe to swim in?

Atlanga Cortina 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.

Atlanga Cortina Dam

MexicoView map Directions

CONAGUA publishes the water-quality measurements for Atlanga Cortina Dam. Here is what has been measured.

Clarity

0.5 m

Typical for Mexico

Secchi · sampled 2021

Phosphorus

107 µg/L

Typical for Mexico

Measured by CONAGUA

Chlorophyll-a

13.2 µg/L

More algae than most

Measured by CONAGUA

Limited data

See the measurements Directions Where to stay

Atlanga Cortina Dam in Mexico has official water-quality measurements, shown as reported. Water clarity: 0.5 m visibility. Phosphorus: 107 µg/L. Chlorophyll-a (algae): 13.2 µg/L.

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How Atlanga Cortina Dam is classified

Atlanga Cortina 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.

Atlanga Cortina 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 2021-09-03. Methodology: how these readings are compared.

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Atlanga Cortina 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.

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Water quality measurements for Atlanga Cortina Dam

These are the measurements CONAGUA publishes for Atlanga Cortina Dam. More on the source.

Very murky, less than 1.5 ft of visibility. Phosphorus 107 µg/L. Chlorophyll-a 13.2 µg/L. TSI 66.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	0.45m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	107µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	13.2µg/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.	66	Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

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Fishing Atlanga Cortina Dam

→ Atlanga Cortina Dam fishing regulations (limits, seasons, special rules)

Frequently asked questions about Atlanga Cortina Dam

Where is Atlanga Cortina Dam?: Atlanga Cortina Dam is a lake in Mexico. This page reports official water-quality measurements, shown as reported.
What is the water quality of Atlanga Cortina Dam?: Atlanga Cortina Dam in Mexico has official water-quality measurements, shown as reported. Water clarity: 0.5 m visibility. Phosphorus: 107 µg/L. Chlorophyll-a (algae): 13.2 µg/L.
Is Atlanga Cortina Dam safe to swim in?: Atlanga Cortina 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

28 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 Aguacomisionnacionaldelagua28 samples · —

Analytical methods

GEMStat OPEN / CC BY 4.0

Monitoring station identifiers (1)

MEX02067

Authority classifications are shown as the authority published them. See where the data comes from and data sources.