Mittry Lake
Yuma County, ArizonaView mapDirections
Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.
- Public access
- Limited data
Mittry Lake in Yuma County, Arizona is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 20 µg/L.
- Phosphorus
- 20 µg/L
- Public access
- Yes
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Watch Mittry Lake’s letter
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Why Mittry 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 Mittry Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity and algae (chlorophyll-a).
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.
Mittry Lake is a lake in Yuma County, Arizona. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, ADEQ, last sampled 2026-03-24. Grade methodology: LakeQuality methodology.
What Mittry Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Camping1 public campground nearby
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Mittry Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Phosphorus 20 µg/L. TSI 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 20 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Recreation & Access
- Mittry LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Public campgrounds near Mittry Lake
- Senator Wash Reservoir Coyote Ridge LTVA4.9 km
Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes
Fishing Mittry Lake
Graded lakes near Mittry Lake
Mittry Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Yuma County
Frequently asked questions about Mittry Lake
Where is Mittry Lake?
- Mittry Lake is a lake in Yuma County, Arizona. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Mittry Lake?
- Mittry Lake in Yuma County, Arizona is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 20 µg/L.
Is Mittry Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Mittry Lake?
- Mittry Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Mittry Lake. Public access is listed as yes.
Are there campgrounds on Mittry Lake?
- Mittry Lake has 1 public campground from USGS The National Map within 5 km, including Senator Wash Reservoir Coyote Ridge LTVA. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.
Explore Mittry Lake across LakeQuality
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Other Lakes in Arizona
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Where this data comes from
16 measurements from 4 monitoring stations, 2014–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- USGS Arizona Water Science Center
USGS-AZ13 samples · 2014–2015 - Great Lakes Environmental Center
GLEC3 samples · 2026
Analytical methods
- Phosphorus, wu, microKJ ASF, H+
- 4500 P E ~ Phosphorus in Water by Colorimetry- Ascorbic Acid Method
- 300.0 ~ EPA; Determination of Inorganic Anions by Ion Chromatography
Monitoring station identifiers (4)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory
Public campgrounds from USGS The National Map Structures, within about 3 miles