Harrow Lake
Harrow Lake in Piscataquis County, Maine is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 405 acres.
- Area
- 405 acres
Next lake in Piscataquis County
Swipe left or right on this bar to open the next or previous lake.
Why Harrow 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 Harrow 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 your state environmental agency and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Harrow Lake is a 405-acre lake in Piscataquis County, Maine.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Harrow Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Harrow 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 Harrow Lake
Compare lakeside cabins, hotels, and vacation rentals near Harrow Lake 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 Harrow Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 405 acres |
No bathymetric survey has been published for Harrow Lake, so its depth is not documented here.
Fishing Harrow Lake
Nearby Lakes in Piscataquis County
Frequently asked questions about Harrow Lake
Where is Harrow Lake?
- Harrow Lake 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 Harrow Lake?
- Harrow Lake in Piscataquis County, Maine is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 405 acres.
Is Harrow Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Harrow Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Harrow Lake across LakeQuality
More Maine Lake Rankings
Other Lakes in Maine
Where this data comes from
Measurements for Harrow Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.