Mirror Lake
Mirror Lake in Carroll County, New Hampshire is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 333 acres.
- Area
- 333 acres
- Public access
- Yes
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Why Mirror 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 Mirror 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.
Mirror Lake is a 333-acre lake in Carroll County, New Hampshire. Limited fish-species data available. Public access is available with 2 public boat landings.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Mirror Lake 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 Mirror 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 Mirror Lake
Compare lakeside cabins, hotels, and vacation rentals near Mirror Lake in Carroll County, New Hampshire — 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 Mirror Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 333 acres |
| Public Access | Yes |
No bathymetric survey has been published for Mirror Lake, so its depth is not documented here.
Recreation & Access
- Mirror LakePublic
- Libby MuseumPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Mirror Lake
Nearby Lakes in Carroll County
Frequently asked questions about Mirror Lake
Where is Mirror Lake?
- Mirror Lake is a lake in Carroll County, New Hampshire. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Mirror Lake?
- Mirror Lake in Carroll County, New Hampshire is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 333 acres.
Is Mirror Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Mirror 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 Mirror Lake?
- Mirror Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Mirror Lake, Libby Museum. Public access is listed as yes.
Explore Mirror Lake across LakeQuality
More New Hampshire Lake Rankings
Top 25 by overall water quality score
Top 25 by Secchi water clarity
Grade A/B + low algae filter
Panfish-rich, public access
Full state directory
Other Lakes in New Hampshire
Where this data comes from
Measurements for Mirror 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