Ackley Lake
Ackley Lake in Judith Basin County, Montana is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 229 acres.
- Area
- 229 acres
- Public access
- Yes
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Why Ackley 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 Ackley 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 Montana DEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Ackley Lake is a 229-acre lake in Judith Basin 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.
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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 Ackley 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 Ackley Lake
Compare lakeside cabins, hotels, and vacation rentals near Ackley Lake in Judith Basin 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 | 229 acres |
| Public Access | Yes |
No bathymetric survey has been published for Ackley Lake, so its depth is not documented here.
Recreation & Access
- Ackley Lake State ParkPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Ackley Lake
Nearby Lakes in Judith Basin County
Frequently asked questions about Ackley Lake
Where is Ackley Lake?
- Ackley Lake is a lake in Judith Basin 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 Ackley Lake?
- Ackley Lake in Judith Basin County, Montana is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 229 acres.
Is Ackley Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Ackley Lake 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 Ackley Lake?
- Ackley Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Ackley Lake State Park. Public access is listed as yes.
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Where this data comes from
Measurements for Ackley Lake 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