Where is Darrah Pond-Deep Spot?

Darrah 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.

Is Darrah 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. Darrah Pond-Deep Spot has a water quality grade of D (Nutrient-rich). Always check local health department advisories before swimming.

Are there boat ramps on Darrah Pond-Deep Spot?

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

Darrah Pond-Deep Spot

Grade D — Nutrient-rich

Nutrient-rich · #36 of 36 lakes in the county · Hypereutrophic

Limited DataHypereutrophic

Darrah Pond-Deep Spot in Hillsborough County, New Hampshire has a water quality grade of D (Nutrient-rich). Phosphorus: 158.9 µg/L.

Type: Hypereutrophic
Public access: Yes

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

Find a place to stay →Safe to swim?

Next lake in Hillsborough County

Swipe

COtternick Pond-Deep SpotHillsborough CountyView →

PrevLovewell Pond-Deep Spot Where to stay NextOtternick Pond-Deep Spot

Loading map…

Darrah Pond-Deep Spot is a highly nutrient-loaded hypereutrophic lake in Hillsborough County, New Hampshire. Water quality is graded D based on 1 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, Darrah Pond-Deep Spot ranks #36 for water quality.

Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-07-16. Grade methodology: LakeGrade methodology.

Watch Darrah Pond-Deep Spot water quality

Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.

Swimming Safety

Grade only

Bacteria advisory

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

Compare the safest swimming lakes near Albany →

Get alerts for Darrah Pond-Deep Spot →

Water Quality Grade: D (Nutrient-rich)

No clarity data. Phosphorus level: 158.9 µg/L. Trophic State Index: 77.

Metric	Value	Grade
Water Clarity (Secchi Depth)	No recent samples
Phosphorus	158.9 µg/L	Poor
Chlorophyll-a (Algae)	No recent samples
Trophic State Index (TSI)	77	Hypereutrophic

Very high nutrients, dense algae, poor clarity

Where to stay near Darrah Pond-Deep Spot

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

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

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

Recreation & Access

Boat Landings

Yes

Public Access

Horseshoe PondPublic

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

Fishing Darrah Pond-Deep Spot

→ Darrah Pond-Deep Spot fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Darrah 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 growthBiotoxinsMercuryNutrients (phosphorus, nitrogen)pH / acidity

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

Source: EPA ATTAINS assessment unit NHLAK700061002-01-01 · Official waterbody report · Matched by proximity (0.03 km)

County Ranking

Ranked #36 of 36 lakes in Hillsborough County

Nearby Lakes in Hillsborough County

COtternick Pond-Deep SpotEutrophicView →DRobinson Pond-Deep SpotEutrophicView →DSebbins Pond-Deep SpotMesotrophicView →CCrystal Lake-Deep SpotMesotrophicView →CNutt Pond-Deep SpotEutrophicView →DLovewell Pond-Deep SpotEutrophicView →

Frequently asked questions about Darrah Pond-Deep Spot

Where is Darrah Pond-Deep Spot?: Darrah 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 Darrah Pond-Deep Spot?: Darrah Pond-Deep Spot in Hillsborough County, New Hampshire has a water quality grade of D (Nutrient-rich). Phosphorus: 158.9 µg/L.
Is Darrah 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. Darrah Pond-Deep Spot has a water quality grade of D (Nutrient-rich). Always check local health department advisories before swimming.
Are there boat ramps on Darrah Pond-Deep Spot?: Darrah Pond-Deep Spot has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Horseshoe Pond. Public access is listed as yes.

Explore Darrah Pond-Deep Spot across LakeGrade

Lake Fishing Forecast

Species activity outlook by water temperature and season

Hypereutrophic Lakes

Very high nutrients, dense algae, poor clarity

More New Hampshire Lake Rankings

Cleanest lakes in New Hampshire

Top 25 by overall water quality score

Clearest lakes in New Hampshire

Top 25 by Secchi water clarity

Best swimming lakes in New Hampshire

Grade A/B + low algae filter

Family fishing lakes in New Hampshire

Panfish-rich, public access

All New Hampshire lakes

Full state directory