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LakeQuality

Stevens Pond-Deep Spot

D
Grade D — Nutrient-rich
Nutrient-rich · #28 of 36 lakes in the county · Eutrophic
Eutrophic

Stevens Pond-Deep Spot in Hillsborough County, New Hampshire has a water quality grade of D (Nutrient-rich). Phosphorus: 26.2 µg/L. Chlorophyll-a (algae): 11.8 µg/L.

Type
Eutrophic
Public access
Yes

Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Stevens Pond-Deep Spot

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Stevens Pond-Deep Spot is a productive, nutrient-rich eutrophic lake in Hillsborough County, New Hampshire. Water quality is graded D based on 2 sampling years through 2025. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 35 other monitored lakes in Hillsborough County, Stevens Pond-Deep Spot ranks #28 for water quality.

Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-08-27. Grade methodology: LakeGrade methodology.

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Swimming Safety

Grade only

Elevated nutrients

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

Get alerts for Stevens Pond-Deep Spot

Water Quality Grade: D (Nutrient-rich)

No clarity data. Phosphorus level: 26.2 µg/L. Chlorophyll-a: 11.8 µg/L. Trophic State Index: 53.

MetricValueGrade
Water Clarity (Secchi Depth)No recent samples
Phosphorus26.2 µg/LFair
Chlorophyll-a (Algae)11.8 µg/LPoor
Trophic State Index (TSI)53Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Stevens Pond-Deep Spot

Compare lakeside cabins, hotels, and vacation rentals near Stevens Pond-Deep Spot in Hillsborough 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 Stevens Pond-Deep Spot are listed below.

Top-rated places to stay near Stevens Pond-Deep Spot

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Recreation & Access

1
Boat Landings
Yes
Public Access
  • Candia RoadPublic

Named access points from the USGS National Boat Ramps inventory, snapped within 5 km. More lakes with boat ramps

Fishing Stevens Pond-Deep Spot

EPA Impairment Status

Stevens Pond-Deep Spot is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Algal growthMercuryOxygen depletion (low DO)pH / aciditySalinity / chlorides

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit NHLAK700060803-02 · Official waterbody report · Matched by proximity (0.02 km)

County Ranking

Ranked #28 of 36 lakes in Hillsborough County

Nearby Lakes in Hillsborough County

Frequently asked questions about Stevens Pond-Deep Spot

Where is Stevens Pond-Deep Spot?

Stevens Pond-Deep Spot is a lake in Hillsborough 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 Stevens Pond-Deep Spot?

Stevens Pond-Deep Spot in Hillsborough County, New Hampshire has a water quality grade of D (Nutrient-rich). Phosphorus: 26.2 µg/L. Chlorophyll-a (algae): 11.8 µg/L.

Is Stevens Pond-Deep Spot safe to swim in?

Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Stevens Pond-Deep Spot has a water quality grade of D (Nutrient-rich). Algae concentration (chlorophyll-a) is 11.8 µg/L. Always check local health department advisories before swimming.

Are there boat ramps on Stevens Pond-Deep Spot?

Stevens Pond-Deep Spot has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Candia Road. Public access is listed as yes.

Where this data comes from

62 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-21.

Collected and reported by

  • New Hampshire Department Of Environmental Services (BEACH)1111330062 samples · 2020–2025

Analytical methods

  • 10-115-01-1 F ~ LACHAT; Total Phosphorus- Manual persulfate digest
  • CHLOROPHYLL A-B-C DETERMINATION (MODIFIED)
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