Lake Winona-North Cove East
Lake Winona-North Cove East in Belknap County, New Hampshire is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 9.6 µg/L. Surface area: 93 acres.
- Area
- 93 acres
- Public access
- Yes
Why Lake Winona-North Cove East has no grade
We grade a lake only when its monitoring record clears the evidence bar: 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 Winona-North Cove East, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity and algae (chlorophyll-a).
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 Winona-North Cove East is a 93-acre lake in Belknap County, New Hampshire. 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 2020-08-31. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Lake Winona-North Cove East
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 9.6 µg/L. Trophic State Index: 37.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 9.6 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 37 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Lake Winona-North Cove East
Compare lakeside cabins, hotels, and vacation rentals near Lake Winona-North Cove East in Belknap 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 Lake Winona-North Cove East
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 93 acres |
| Public Access | Yes |
No bathymetric survey has been published for Lake Winona-North Cove East, so its depth is not documented here.
Recreation & Access
- Squam RiverPublic
Named access points from the USGS National Boat Ramps inventory, snapped within 5 km. More lakes with boat ramps
Fishing Lake Winona-North Cove East
Reservoir Info (USACE NID)
Lake Winona-North Cove East is a man-made reservoir impounded by the Hawkins Pond Dam (completed 1873), built primarily for recreation on the Hawkins Pond Brook; earth-type dam, 12 ft tall and 100 ft long.
- Surface area
- 93 ac
- Normal storage
- 350 ac-ft
- Max storage
- 370 ac-ft
- Drainage area
- 1.7 sq mi
- Hazard class
- Significant
- Owner
- NH DES WATER DIVISION
Source: USACE National Inventory of Dams, NID ID NH00334 · Operator website · Matched by proximity (0.84 km)
EPA Impairment Status
Lake Winona-North Cove East is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NHIMP700020108-02 · Official waterbody report · Matched by proximity (0.74 km)
Graded lakes near Lake Winona-North Cove East
Lake Winona-North Cove East has no grade, but these lakes within a short drive do.
Nearby Lakes in Belknap County
Frequently asked questions about Lake Winona-North Cove East
Where is Lake Winona-North Cove East?
- Lake Winona-North Cove East is a lake in Belknap County, New Hampshire. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for Lake Winona-North Cove East?
- Lake Winona-North Cove East in Belknap County, New Hampshire is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 9.6 µg/L. Surface area: 93 acres.
Is Lake Winona-North Cove East safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Winona-North Cove East 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 Winona-North Cove East?
- Lake Winona-North Cove East has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Squam River. Public access is listed as yes.
Explore Lake Winona-North Cove East across LakeGrade
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
Oligotrophic Lakes in New Hampshire
Where this data comes from
1 measurement from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- New Hampshire Department Of Environmental Services (BEACH)
111133001 sample · 2020
Analytical methods
- 10-115-01-1 F ~ LACHAT; Total Phosphorus- Manual persulfate digest
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Named boat-access points from the USGS National Boat Ramps inventory