Lake Mead
Lake Mead in Mohave County, Arizona is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 173 acres.
- Area
- 173 acres
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Why Lake Mead 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 Lake Mead, 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.
Lake Mead is a 173-acre lake in Mohave County, Arizona.
Source: EPA Water Quality Portal sampling records, ADEQ, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Lake Mead 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 Lake Mead
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 Lake Mead
Compare lakeside cabins, hotels, and vacation rentals near Lake Mead in Mohave 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 Lake Mead
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Planning a whole trip? See where to stay at Arizona’s top lakes →
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 173 acres |
No bathymetric survey has been published for Lake Mead, so its depth is not documented here.
Fishing Lake Mead
Nearby Lakes in Mohave County
Frequently asked questions about Lake Mead
Where is Lake Mead?
- Lake Mead is a lake in Mohave 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 Lake Mead?
- Lake Mead in Mohave County, Arizona is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 173 acres.
Is Lake Mead safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Mead 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 Lake Mead come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.