Martinsdale Reservoir
Martinsdale Reservoir in Wheatland County, Montana is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 989 acres.
- Area
- 989 acres
- Public access
- Yes
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Why Martinsdale Reservoir 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 Martinsdale Reservoir, 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 Montana DEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Martinsdale Reservoir is a 989-acre lake in Wheatland County, Montana. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Montana DEQ, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Martinsdale Reservoir 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 Martinsdale Reservoir
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 Martinsdale Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Martinsdale Reservoir in Wheatland County, Montana — 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.
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 989 acres |
| Public Access | Yes |
No bathymetric survey has been published for Martinsdale Reservoir, so its depth is not documented here.
Recreation & Access
- Martinsdale ReservoirPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Martinsdale Reservoir
Nearby Lakes in Wheatland County
Frequently asked questions about Martinsdale Reservoir
Where is Martinsdale Reservoir?
- Martinsdale Reservoir is a lake in Wheatland County, Montana. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Martinsdale Reservoir?
- Martinsdale Reservoir in Wheatland County, Montana is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 989 acres.
Is Martinsdale Reservoir safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Martinsdale Reservoir is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Are there boat ramps on Martinsdale Reservoir?
- Martinsdale Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Martinsdale Reservoir. Public access is listed as yes.
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Where this data comes from
Measurements for Martinsdale Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory