Skip to main content

Ohio Water Assets

Midwest

Ohio's glacial buried valley aquifers are among the most productive in the Midwest, with significant carbonate aquifers in the western region.

Reasonable Use88 counties tracked2201 active alerts
51,011
Total Assets
60.7
Avg WIS
41,466
Verified
0
High WIS (75+)

Ohio Water Intelligence Report

Hi3 Water tracks 51,011 water assets across Ohio, spanning 88 counties and 6 distinct asset types. The average Water Intelligence Score (WIS) across Ohio is 60.7/100, with 0 assets scoring in the high-value range (75+). Ohio operates under Reasonable Use water law, which directly affects water rights acquisition and asset valuation in this state.

The dominant water asset type in Ohio is River (38,679 assets, avg WIS 64.7). The highest concentration is in Greene County with 517 tracked assets.

2,201 active regulatory alerts are currently tracked in Ohio, 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: June 29, 2026.

Asset Types in Ohio

Intelligence Grade Distribution

How Ohio assets are graded

S (≥90) — Exceptional0 (0.0%)
A (75-89) — Excellent0 (0.0%)
B (55-74) — Good39,868 (78.2%)
C (35-54) — Fair11,143 (21.8%)
D (<35) — Limited0 (0.0%)

Regulatory Alerts

Drought, EPA violations, and enforcement actions affecting Ohio

24
critical
70
high
2045
medium
62
low
0
info
OHIO R AT NEW CUMBERLAND LOCK & DAM (LOWER), OH — Gage Height 19.1 ft
usgs_flood · flood_warning
Muskingum River at Dresden OH — Gage Height 16.4 ft
usgs_flood · flood_warning
Maumee River at Antwerp OH — Gage Height 14.8 ft
usgs_flood · flood_warning

Top Counties in Ohio

Greene
517 assetsWIS 46
Montgomery
508 assetsWIS 47
Franklin
440 assetsWIS 45
Geauga
371 assetsWIS 43
Clark
290 assetsWIS 48
Hamilton
282 assetsWIS 48
Portage
267 assetsWIS 47
Belmont
255 assetsWIS 49
Wood
246 assetsWIS 46
Lucas
246 assetsWIS 46
Pike
235 assetsWIS 44
Guernsey
218 assetsWIS 48

Aquifer Type Mix

unconfined
1,769
Avg WIS 45
confined
1,653
Avg WIS 52
fossil
1
Avg WIS 73

Top 10 Water Assets in Ohio

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

View all on map
  1. 1

    HEATH CITY PWS

    Well
    Licking County·1,340 GPM
    73
    WIS
  2. 2

    Clinton Sandstone Deep Fossil Aquifer — Northeast Ohio

    Fossil Water
    Stark County·50 GPM
    73
    WIS
  3. 3

    Bridgewater Dairy - County Road 9

    Well
    Williams County·600 GPM
    70
    WIS
  4. 4

    The Ohio Valley Coal Slurry Disposal Dam

    Reservoir
    ·69,120 GPM
    67
    WIS
  5. 5

    Clear Fork

    River
    ·3,858 GPM
    67
    WIS
  6. 6

    Big Beaver Creek

    River
    ·9,115 GPM
    67
    WIS
  7. 7

    Muskingum River Upper Fly Ash Dam

    Reservoir
    ·25,135 GPM
    67
    WIS
  8. 8

    Germantown Dam

    Reservoir
    ·10,006,238 GPM
    67
    WIS
  9. 9

    Eramet Waste Retention Dam

    Reservoir
    ·187,611 GPM
    67
    WIS
  10. 10

    Cardinal Fly Ash No. 2 Dam

    Reservoir
    ·2,427,727 GPM
    67
    WIS
Avg Flow Rate
494,395 GPM
Avg Depth
153 ft
For Sale
0
Fossil Water
1

Explore Ohio on the Interactive Map

View all 51,011 water assets, aquifer boundaries, water rights data, and regulatory alerts for Ohio.