Where is Santa Rosa Dam Entrance?

Santa Rosa Dam Entrance is a lake in Mexico. This page reports official water-quality measurements, shown as reported.

Is Santa Rosa Dam Entrance safe to swim in?

Santa Rosa Dam Entrance 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.

Santa Rosa Dam Entrance

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CONAGUA publishes the water-quality measurements for Santa Rosa Dam Entrance. Here is what has been measured.

Clarity

0.4 m

Murkier than most

Secchi · sampled 2020

Chlorophyll-a

16.6 µg/L

More algae than most

Measured by CONAGUA

Limited data

See the measurements Directions Where to stay

Santa Rosa Dam Entrance in Mexico has official water-quality measurements, shown as reported. Water clarity: 0.4 m visibility. Chlorophyll-a (algae): 16.6 µg/L.

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How Santa Rosa Dam Entrance is classified

Santa Rosa Dam Entrance 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 and algae (chlorophyll-a), but not phosphorus.

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.

Santa Rosa Dam Entrance 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 2020-08-24. 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 Santa Rosa Dam Entrance 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 Santa Rosa Dam Entrance

These are the measurements CONAGUA publishes for Santa Rosa Dam Entrance. More on the source.

Very murky, less than 1.1 ft of visibility. Chlorophyll-a 16.6 µg/L. TSI 67.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	0.35m	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)	16.6µg/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.	67	Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

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Fishing Santa Rosa Dam Entrance

→ Santa Rosa Dam Entrance fishing regulations (limits, seasons, special rules)

Frequently asked questions about Santa Rosa Dam Entrance

Where is Santa Rosa Dam Entrance?: Santa Rosa Dam Entrance is a lake in Mexico. This page reports official water-quality measurements, shown as reported.
What is the water quality of Santa Rosa Dam Entrance?: Santa Rosa Dam Entrance in Mexico has official water-quality measurements, shown as reported. Water clarity: 0.4 m visibility. Chlorophyll-a (algae): 16.6 µg/L.
Is Santa Rosa Dam Entrance safe to swim in?: Santa Rosa Dam Entrance 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 Aguacomisionnacionaldelagua15 samples · —

Analytical methods

GEMStat OPEN / CC BY 4.0

Monitoring station identifiers (1)

MEX03041

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