John Mills Lake
John Mills Lake in Rio Arriba County, New Mexico is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 39 acres.
- Area
- 39 acres
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Why John Mills Lake 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 John Mills Lake, 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 NMED and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
John Mills Lake is a 39-acre lake in Rio Arriba County, New Mexico.
Source: EPA Water Quality Portal sampling records, NMED, last sampled recent years. Grade methodology: LakeQuality methodology.
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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 John Mills Lake
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 John Mills Lake
Compare lakeside cabins, hotels, and vacation rentals near John Mills Lake in Rio Arriba County, New Mexico — 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 John Mills Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 39 acres |
No bathymetric survey has been published for John Mills Lake, so its depth is not documented here.
Fishing John Mills Lake
Nearby Lakes in Rio Arriba County
Frequently asked questions about John Mills Lake
Where is John Mills Lake?
- John Mills Lake is a lake in Rio Arriba County, New Mexico. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for John Mills Lake?
- John Mills Lake in Rio Arriba County, New Mexico is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 39 acres.
Is John Mills Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. John Mills Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore John Mills Lake across LakeQuality
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Where this data comes from
Measurements for John Mills Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.