Lake Hayward
Lake Hayward in Middlesex County, Connecticut has a water quality grade of B (Good). Phosphorus: 16 µg/L. Chlorophyll-a (algae): 4.5 µg/L. Surface area: 184.5 acres.
- Area
- 185 acres
- Type
- Mesotrophic
- Public access
- Yes
Lake Hayward is a 185-acre mesotrophic lake in Middlesex County, Connecticut. Water quality is graded B based on 2 sampling years through 2022. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 4 other monitored lakes in Middlesex County, Lake Hayward ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2022-09-12. 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.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
No clarity data. Phosphorus level: 16 µg/L. Chlorophyll-a: 4.5 µg/L. Trophic State Index: 45.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 16 µg/L | Good |
| Chlorophyll-a (Algae) | 4.5 µg/L | Not graded |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Lake Hayward
Compare lakeside cabins, hotels, and vacation rentals near Lake Hayward in Middlesex County, Connecticut — 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 Hayward
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 185 acres |
| Public Access | Yes |
No bathymetric survey has been published for Lake Hayward, so its depth is not documented here.
Recreation & Access
- Hayward LakePublic
Named access points from the USGS National Boat Ramps inventory, snapped within 5 km. More lakes with boat ramps
Fishing Lake Hayward
Reservoir Info (USACE NID)
Lake Hayward is a man-made reservoir impounded by the Lake Hayward Dam (completed 1877), built primarily for recreation on the Lake Hayward Brook; earth-type dam, 8 ft tall and 130 ft long.
- Surface area
- 184.5 ac
- Normal storage
- 645 ac-ft
- Max storage
- 645 ac-ft
- Drainage area
- 2.49 sq mi
- Hazard class
- Significant
- Owner
- Property Owners Association of Lake Hayward
Source: USACE National Inventory of Dams, NID ID CT00352 · Operator website
County Ranking
Ranked #1 of 5 lakes in Middlesex County
Nearby Lakes in Middlesex County
Frequently asked questions about Lake Hayward
Where is Lake Hayward?
- Lake Hayward is a lake in Middlesex County, Connecticut. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Hayward?
- Lake Hayward in Middlesex County, Connecticut has a water quality grade of B (Good). Phosphorus: 16 µg/L. Chlorophyll-a (algae): 4.5 µg/L. Surface area: 184.5 acres.
Is Lake Hayward safe to swim in?
- Good for swimming, clear water with low algae levels. Lake Hayward has a water quality grade of B (Good). Algae concentration (chlorophyll-a) is 4.5 µg/L. Always check local health department advisories before swimming.
Are there boat ramps on Lake Hayward?
- Lake Hayward has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Hayward Lake. Public access is listed as yes.
Explore Lake Hayward across LakeGrade
More Connecticut Lake Rankings
Other Grade B Lakes in Connecticut
Mesotrophic Lakes in Connecticut
Where this data comes from
10 measurements from 1 monitoring station, 2022. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- Connecticut Department Of Energy And Environmental Protection
CT_DEP01_WQX10 samples · 2022
Analytical methods
- Total Phosphorus After Block Digestion
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
- Nitrate-Nitrite Nitrogen by Colorimetry
- Turbidity by Nephelometry
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
Named boat-access points from the USGS National Boat Ramps inventory