Lake Onawa
Lake Onawa in Piscataquis County, Maine is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 1193 acres.
- Area
- 1,193 acres
- Public access
- Yes
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Why Lake Onawa 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 Onawa, 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 your state environmental agency and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lake Onawa is a 1,193-acre lake in Piscataquis County, Maine. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Lake Onawa 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 Onawa
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 Onawa
Compare lakeside cabins, hotels, and vacation rentals near Lake Onawa in Piscataquis County, Maine — 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 Onawa
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 1,193 acres |
| Public Access | Yes |
No bathymetric survey has been published for Lake Onawa, so its depth is not documented here.
Recreation & Access
- Lake OnawaPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Lake Onawa
Nearby Lakes in Piscataquis County
Frequently asked questions about Lake Onawa
Where is Lake Onawa?
- Lake Onawa is a lake in Piscataquis County, Maine. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Lake Onawa?
- Lake Onawa in Piscataquis County, Maine is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 1193 acres.
Is Lake Onawa safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Onawa 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 Onawa?
- Lake Onawa has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Onawa. Public access is listed as yes.
Explore Lake Onawa across LakeQuality
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Where this data comes from
Measurements for Lake Onawa 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