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Sanborn Pond

Loudon, New Hampshire — NH Fish & Game Inland Fisheries Division (Concord headquarters).

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87Surface acres
24 ftMax depth
12 ftAverage depth
EutrophicTrophic class (NHDES)
WarmwaterFishery type

Source: NH Fish & Game NH Freshwater Fishing Guide layer (2026; depth/area/trophic from NHDES). Depth map: NHFG bathymetry map (PDF).

Location & fast facts

Where Sanborn Pond is in New Hampshire

The red circle marks Sanborn Pond.

Fast facts

About Sanborn Pond

  • County: Merrimack
  • Town: Loudon
  • Watershed: Merrimack River basin (NHDES)
  • Type: Natural lake or pond (NHDES)
  • NH Fish & Game: Inland Fisheries Division (Concord headquarters)
  • Distance: about 12 mi from Concord, NH and 70 mi from Boston, straight-line (not driving distance)
  • Access (NHFG): limited shorebank access

Towns and counties: NHFG, NHDES and U.S. Census town boundaries (shore towns found by overlaying the lake outline).

Fishing in New Hampshire

  • 2026 fishing license: Resident $45 · Non-resident $63 · 1-day $10 / $15 NHFG
  • Kids: Under 16 fish free, no license needed NHFG
  • Free fishing days 2026: Sat Jan 17 & Sat Jun 6 (3rd Sat in Jan, 1st Sat in June) NH Digest
  • Lakes & ponds: Almost 1,000 public lakes and ponds NHDES
  • Buy a license: Online or at about 250 local license agents NHFG
  • Ice fishing: Most waters: ice-in to ice-out. Lake trout/salmon lakes: Jan 1–Mar 31, no keeping salmon. Trout ponds closed. Bob houses off by Apr 1 NH Digest
  • Regulations: 2026 NH Freshwater Fishing Digest

As of 2026-10-10. Check the official source before you go.

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Lake map

Sanborn Pond shoreline

1 mileN

No public access sites are listed for this water in the NH Access Sites data.

Shoreline: USGS National Hydrography Dataset (NHD Waterbody, Permanent ID 135908195), public domain. State outline: U.S. Census Bureau TIGERweb. Points: NH Access Sites to Public Waters (NH OPD / NHFG). Interactive map: Leaflet with © OpenStreetMap contributors. Not for navigation.

Conditions right now

Air temperature & conditions (nearest NWS station)Loading…
Fetching the latest National Weather Service observation…

Live from the National Weather Service API for the lake's coordinates (43.3377, -71.3910). The nearest station may be several miles away. NWS forecast for Sanborn Pond. No live water-temperature sensor is shown because we haven't found a public one for this lake.

Sun, moon & best fishing times

Sun & moon at Sanborn Pond

Best fishing times

Major periodMinor periodDaylight

    Based on solunar theory, an estimate. Major periods (about 2 hours) center on when the moon is directly overhead or underfoot; minor periods (about 1 hour) center on moonrise and moonset. The 0–100 activity score rises during those periods and gets a boost near sunrise and sunset and around the new and full moon. Weather, water temperature and pressure often matter more. Sun and moon times are calculated in your browser from the lake's coordinates with standard astronomy formulas, shown in ET (America/New_York), and accurate to within a few minutes.

    Fish you can catch

    Chain pickerelBrown bullhead (horned pout)

    Species list from NHFG Fishing Guide codes: ECP, BBH (names decoded by us; NHFG does not publish the legend with the layer). NHFG fishery type: Warmwater.

    NHFG NH Freshwater Fishing Guide layer

    Fishing seasons & limits

    Statewide general rules Sanborn Pond is not listed as a Lake Trout/Salmon Lake or Trout Pond in the 2026 Digest, so New Hampshire's general lake & pond rules apply to the species found here.

    SpeciesSeason & limits (general rules)
    Chain pickerelno closed season, 10/day
    Perch, crappie, sunfish & horned poutno closed season, 25/day each, 50 total

    2026 NH Freshwater Fishing Digest: Lakes & Ponds General Rules · Lakes & Ponds with Special Rules

    Summary only. Check the current Digest before you fish. As of Oct 10, 2026.

    Invasive species

    None documented NHDES lists no known invasive species in Sanborn Pond.

    Clean, Drain, Dry is NH law. Drain your boat, live wells, bilges and gear when you leave any water, travel with drain plugs out (RSA 487:16-d), and don't carry plants or weeds on your boat, trailer or vehicle (RSA 487:16-c). NH LAKES Lake Host.

    NHDES Lake Information Mapper · RSA 487:16-d · RSA 487:16-c

    As of Oct 10, 2026.

    Safe to swim?

    Toxic algae (cyanobacteria): NHDES statusChecking NHDES…
    Live from the NHDES Healthy Swimming Mapper. NHDES issues warnings May 15–Oct 15.
    Beach bacteria testingNot state-tested
    NHDES: Does not participate in NHDES' Public Beach Inspection Program.

    Check before you swim: the NHDES Healthy Swimming Mapper is updated daily. If you see a bloom, stay out of the water, keep pets out, and report it to NHDES.

    Water quality

    Trophic classEutrophic (nutrient-rich, often weedy)
    Water quality classClass B (NH surface water classification)
    NHDES lake surveys1985
    Fish consumptionNHDES mercury report for Sanborn Pond

    NHDES Lake Information Mapper

    Contact & official info

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    Lakes & ponds nearby

    Straight-line distance between lake centers. All New Hampshire lakes & ponds · All waters in Loudon