Mayland Pond
Big Horn County, Wyoming34 acresView 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.
- Limited data
Mayland Pond in Big Horn County, Wyoming is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 60 µg/L. Surface area: 34 acres.
- Area
- 34 acres
- Phosphorus
- 60 µg/L
- Trend
- ↓ Declining
Stays via Stay22
Stays near Mayland Pond
Compare lakeside cabins, hotels, and vacation rentals near Mayland Pond in Big Horn County, Wyoming — 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 Mayland Pond
Prices for Sep 11–13, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Wyoming’s top lakes →
Watch Mayland Pond’s letter
Email me if this lake’s grade moves. Grades stay free.
Or email
Why Mayland Pond 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 Mayland Pond, 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 Wyoming DEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Mayland Pond is a 34-acre lake in Big Horn County, Wyoming. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2016-09-26. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Mayland Pond
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Phosphorus 60 µg/L. TSI 63.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 60 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 63 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 34 acres |
No bathymetric survey has been published for Mayland Pond, so its depth is not documented here.
Fishing Mayland Pond
Water Quality Trend: ↓ Declining
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↓ Declining | +5 µg/L/yr | 2 |
Reservoir Info (USACE NID)
Mayland Pond is a man-made reservoir impounded by the Bench Canal (completed 1969), built primarily for irrigation on the Greybull River; earth-type dam, 35 ft tall and 1,000 ft long.
- Surface area
- 34 ac
- Normal storage
- 299 ac-ft
- Max storage
- 497 ac-ft
- Drainage area
- 1 sq mi
- Hazard class
- Low
- Owner
- BENCH CANAL COMPANY
Source: USACE National Inventory of Dams, NID ID WY01086 · Operator website · Matched by proximity (0.05 km)
Graded lakes near Mayland Pond
Mayland Pond has no grade, but these lakes within a short drive do.
Nearby Lakes in Big Horn County
Frequently asked questions about Mayland Pond
Where is Mayland Pond?
- Mayland Pond is a lake in Big Horn County, Wyoming. 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 Mayland Pond?
- Mayland Pond in Big Horn County, Wyoming is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 60 µg/L. Surface area: 34 acres.
Is Mayland Pond safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
Explore Mayland Pond across LakeQuality
More Wyoming Lake Rankings
Other Lakes in Wyoming
Eutrophic Lakes in Wyoming
Where this data comes from
1 measurement from 1 monitoring station, 2016. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- State of Wyoming Department of Environmental Quality Watershed Program
WYDEQ_WATERSHED1 sample · 2016
Analytical methods
- Total Phosphorus After Block Digestion
Monitoring station identifiers (1)
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.