Lake Winona-Chutes Cove
Lake Winona-Chutes Cove in Belknap County, New Hampshire has a water quality grade of D (Nutrient-rich). Phosphorus: 30 µg/L. Surface area: 93 acres.
- Area
- 93 acres
- Type
- Eutrophic
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Lake Winona-Chutes Cove →
Lake Winona-Chutes Cove is a 93-acre productive, nutrient-rich eutrophic lake in Belknap County, New Hampshire. Water quality is graded D based on 1 sampling years through 2025. Compared to the 26 other monitored lakes in Belknap County, Lake Winona-Chutes Cove ranks #26 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-06-11. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum
Water Quality Grade: D (Nutrient-rich)
No clarity data. Phosphorus level: 30 µg/L. Trophic State Index: 53.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 30 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 53 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lake Winona-Chutes Cove
Compare lakeside cabins, hotels, and vacation rentals near Lake Winona-Chutes Cove 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. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Lake Winona-Chutes Cove are listed below.
Top-rated places to stay near Lake Winona-Chutes Cove
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 93 acres |
No bathymetric survey has been published for Lake Winona-Chutes Cove, so its depth is not documented here.
Fishing Lake Winona-Chutes Cove
Reservoir Info (USACE NID)
Lake Winona-Chutes Cove 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 (0.7 km)
EPA Impairment Status
Lake Winona-Chutes Cove 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 (0.61 km)
County Ranking
Ranked #26 of 27 lakes in Belknap County
Nearby Lakes in Belknap County
Frequently asked questions about Lake Winona-Chutes Cove
Where is Lake Winona-Chutes Cove?
- Lake Winona-Chutes Cove is a lake in Belknap County, New Hampshire. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Winona-Chutes Cove?
- Lake Winona-Chutes Cove in Belknap County, New Hampshire has a water quality grade of D (Nutrient-rich). Phosphorus: 30 µg/L. Surface area: 93 acres.
Is Lake Winona-Chutes Cove safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Lake Winona-Chutes Cove has a water quality grade of D (Nutrient-rich). Always check local health department advisories before swimming.
Explore Lake Winona-Chutes Cove across LakeGrade
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Other Grade D Lakes in New Hampshire
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Rockingham County · Nutrient-rich
Rockingham County · Nutrient-rich
Rockingham County · Nutrient-rich
Rockingham County · Nutrient-rich
Sullivan County · Nutrient-rich
Eutrophic Lakes in New Hampshire
Where this data comes from
6 measurements from 1 monitoring station, 2021–2025. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- New Hampshire Department Of Environmental Services (BEACH)
111133006 samples · 2021–2025
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