Lake Ilo
Lake Ilo in Dunn County, North Dakota is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 881 acres.
- Area
- 881 acres
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Why Lake Ilo 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 Ilo, 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 NDDEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lake Ilo is a 881-acre lake in Dunn County, North Dakota.
Source: EPA Water Quality Portal sampling records, NDDEQ, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Lake Ilo 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 Ilo
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 Ilo
Compare lakeside cabins, hotels, and vacation rentals near Lake Ilo in Dunn County, North Dakota — 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 Ilo
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 881 acres |
No bathymetric survey has been published for Lake Ilo, so its depth is not documented here.
Recreation & Access
- Lake IloPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Lake Ilo
Nearby Lakes in Dunn County
Frequently asked questions about Lake Ilo
Where is Lake Ilo?
- Lake Ilo is a lake in Dunn County, North Dakota. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Lake Ilo?
- Lake Ilo in Dunn County, North Dakota is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 881 acres.
Is Lake Ilo safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Ilo 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 Lake Ilo?
- Lake Ilo has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Ilo.
Explore Lake Ilo across LakeQuality
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Where this data comes from
Measurements for Lake Ilo come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Depth, fish, and access data from North Dakota Game & Fish
Named boat-access points from the USGS National Boat Ramps inventory