Sanchez Reservoir
Sanchez Reservoir in Costilla County, Colorado is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 763 acres.
- Area
- 763 acres
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Why Sanchez Reservoir has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Sanchez Reservoir, no water-quality sampling on record for this lake.
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by CDPHE and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Sanchez Reservoir is a 763-acre lake in Costilla County, Colorado.
Source: EPA Water Quality Portal sampling records, CDPHE, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Sanchez Reservoir water quality
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Sanchez Reservoir
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Sanchez Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Sanchez Reservoir in Costilla County, Colorado — 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.
Top-rated places to stay near Sanchez Reservoir
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 763 acres |
No bathymetric survey has been published for Sanchez Reservoir, so its depth is not documented here.
Fishing Sanchez Reservoir
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Frequently asked questions about Sanchez Reservoir
Where is Sanchez Reservoir?
- Sanchez Reservoir is a lake in Costilla County, Colorado. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Sanchez Reservoir?
- Sanchez Reservoir in Costilla County, Colorado is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 763 acres.
Is Sanchez Reservoir safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Sanchez Reservoir is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Sanchez Reservoir across LakeQuality
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Where this data comes from
Measurements for Sanchez Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.