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Hi3 Water

New Hampshire Water Assets

New England

New Hampshire's water resources include fractured bedrock aquifers, glacial stratified-drift aquifers, and numerous mountain streams.

Riparian11 counties tracked2033 active alerts
96,022
Total Assets
48.6
Avg WIS
16,796
Verified
0
High WIS (75+)

New Hampshire Water Intelligence Report

Hi3 Water tracks 96,022 water assets across New Hampshire, spanning 11 counties and 5 distinct asset types. The average Water Intelligence Score (WIS) across New Hampshire is 48.6/100, with 0 assets scoring in the high-value range (75+). New Hampshire operates under Riparian water law, which directly affects water rights acquisition and asset valuation in this state.

The dominant water asset type in New Hampshire is Well (79,135 assets, avg WIS 45.6). The highest concentration is in Hillsborough County with 9,676 tracked assets.

2,033 active regulatory alerts are currently tracked in New Hampshire, including EPA violations, drought declarations, and state water board enforcement actions. Always check the regulatory intelligence for any asset before making acquisition decisions.

Data sources: USGS Water Data, EPA ECHO, state water boards, and verified field reports. Water Intelligence Scores are computed across flow rate, geological stability, legal accessibility, sustainability, and rarity. Report last updated: July 1, 2026.

Asset Types in New Hampshire

Well
79,135
Avg WIS 45.6
River
14,881
Avg WIS 64.9
Lake
1,235
Avg WIS 42.0
Reservoir
680
Avg WIS 58.9
Spring
91
Avg WIS 41.3

Intelligence Grade Distribution

How New Hampshire assets are graded

S (≥90) — Exceptional0 (0.0%)
A (75-89) — Excellent0 (0.0%)
B (55-74) — Good15,369 (16.0%)
C (35-54) — Fair80,653 (84.0%)
D (<35) — Limited0 (0.0%)

Regulatory Alerts

Drought, EPA violations, and enforcement actions affecting New Hampshire

3
critical
22
high
2005
medium
3
low
0
info
CONNECTICUT RIVER NEAR DALTON, NH — Gage Height 11.2 ft
usgs_flood · flood_warning
CONNECTICUT RIVER AT NORTH WALPOLE, NH — Gage Height 13.1 ft
usgs_flood · flood_warning
ASHUELOT RIVER ABOVE THE BRANCH, AT KEENE, NH — Gage Height 66.9 ft
usgs_flood · flood_warning

Top Counties in New Hampshire

Hillsborough
9,676 assetsWIS 41
Rockingham
8,358 assetsWIS 41
Merrimack
4,714 assetsWIS 41
Grafton
4,190 assetsWIS 41
Carroll
3,392 assetsWIS 42
Strafford
2,716 assetsWIS 41
Cheshire
2,571 assetsWIS 41
Belknap
2,377 assetsWIS 41
Coos
1,822 assetsWIS 42
Sullivan
1,198 assetsWIS 41
000
1 assetsWIS 41

Aquifer Type Mix

unconfined
1,590
Avg WIS 44
confined
637
Avg WIS 51

Top 10 Water Assets in New Hampshire

Ranked by Water Intelligence Score — New Hampshire's highest-scoring springs, wells, and aquifers.

View all on map
  1. 1

    East Inlet

    River
    ·3,539 GPM
    67
    WIS
  2. 2

    New River

    River
    ·1,633 GPM
    67
    WIS
  3. 3

    Stream Mill Brook

    River
    ·2,976 GPM
    67
    WIS
  4. 4

    Phillips Brook

    River
    ·9,533 GPM
    67
    WIS
  5. 5

    Comerford

    Reservoir
    ·50,000,000 GPM
    67
    WIS
  6. 6

    Everett Dam

    Reservoir
    ·12,791,684 GPM
    67
    WIS
  7. 7

    Moore

    Reservoir
    ·50,000,000 GPM
    67
    WIS
  8. 8

    Franklin Falls Dam

    Reservoir
    ·50,000,000 GPM
    67
    WIS
  9. 9

    Murphy Dam

    Reservoir
    ·33,213,494 GPM
    67
    WIS
  10. 10

    Otter Brook Dam

    Reservoir
    ·15,484,670 GPM
    67
    WIS
Avg Flow Rate
260,673 GPM
Avg Depth
347 ft
For Sale
0
Fossil Water
0

Explore New Hampshire on the Interactive Map

View all 96,022 water assets, aquifer boundaries, water rights data, and regulatory alerts for New Hampshire.

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