San Gregorio Deep Lake is a productive, nutrient-rich eutrophic lake in Rio Arriba County, New Mexico. Water quality is graded C based on 1 sampling years through 2014. Compared to the 15 other monitored lakes in Rio Arriba County, San Gregorio Deep Lake ranks #14 for water quality.
Source: EPA Water Quality Portal sampling records, New Mexico DNR, last sampled 2014-09-22. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 4.3 ft. Chlorophyll-a: 8.5 µg/L. Trophic State Index: 54.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.3 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 8.5 µg/L | C |
| Trophic State Index (TSI) | 54 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing San Gregorio Deep Lake
Location
County Ranking
Ranked #14 of 16 lakes in Rio Arriba County
Cleaner Lakes Within 30 Miles
San Gregorio Deep Lake holds Grade C. 3 nearby lakes hold higher grades.
Nearby Lakes in Rio Arriba County
Explore San Gregorio Deep Lake across LakeGrade
More New Mexico Lake Rankings
Other Grade C Lakes in New Mexico
Eutrophic Lakes in New Mexico
More records, surveys & data sources
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2014-09-22
Monitoring stations: 1