Hay Lake
Hay Lake in Coconino County, Arizona is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 459 acres.
- Area
- 459 acres
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Why Hay 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 Hay 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 ADEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Hay Lake is a 459-acre lake in Coconino County, Arizona.
Source: EPA Water Quality Portal sampling records, ADEQ, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Hay Lake 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 Hay 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 Hay Lake
Compare lakeside cabins, hotels, and vacation rentals near Hay Lake in Coconino County, Arizona — 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 Hay Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 459 acres |
No bathymetric survey has been published for Hay Lake, so its depth is not documented here.
Fishing Hay Lake
Nearby Lakes in Coconino County
Frequently asked questions about Hay Lake
Where is Hay Lake?
- Hay Lake is a lake in Coconino County, Arizona. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Hay Lake?
- Hay Lake in Coconino County, Arizona is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 459 acres.
Is Hay Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Hay Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
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Where this data comes from
Measurements for Hay Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.