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Michigan Water Assets

Great Lakes

Surrounded by the Great Lakes (20% of world's surface freshwater), Michigan also has extensive glacial aquifers and is governed by the Great Lakes Compact.

Reasonable Use83 counties tracked2241 active alerts
107,514
Total Assets
55.1
Avg WIS
50,472
Verified
1
High WIS (75+)

Michigan Water Intelligence Report

Hi3 Water tracks 107,514 water assets across Michigan, spanning 83 counties and 7 distinct asset types. The average Water Intelligence Score (WIS) across Michigan is 55.1/100, with 1 assets scoring in the high-value range (75+). Michigan operates under Reasonable Use water law, which directly affects water rights acquisition and asset valuation in this state.

The dominant water asset type in Michigan is Well (57,015 assets, avg WIS 49.0). The highest concentration is in Allegan County with 32,927 tracked assets.

2,241 active regulatory alerts are currently tracked in Michigan, 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 4, 2026.

Asset Types in Michigan

Intelligence Grade Distribution

How Michigan assets are graded

S (≥90) — Exceptional0 (0.0%)
A (75-89) — Excellent1 (0.0%)
B (55-74) — Good44,271 (41.2%)
C (35-54) — Fair63,242 (58.8%)
D (<35) — Limited0 (0.0%)

Regulatory Alerts

Drought, EPA violations, and enforcement actions affecting Michigan

25
critical
87
high
2065
medium
64
low
0
info
SCHWEITZER RESERVOIR NEAR PALMER, MI — Gage Height 35.0 ft
usgs_flood · flood_warning
GREENWOOD AFTERBAY NEAR GREENWOOD, MI — Gage Height 80.6 ft
usgs_flood · flood_warning
GREENWOOD RESERVOIR NEAR GREENWOOD, MI — Gage Height 115.2 ft
usgs_flood · flood_warning

Top Counties in Michigan

Allegan
32,927 assetsWIS 50
Alcona
6,278 assetsWIS 51
Alpena
4,902 assetsWIS 50
Alger
3,281 assetsWIS 50
Antrim
2,668 assetsWIS 51
Ottawa
1,191 assetsWIS 42
Muskegon
907 assetsWIS 41
Clinton
666 assetsWIS 43
Montcalm
478 assetsWIS 42
Oakland
397 assetsWIS 43
Iosco
279 assetsWIS 40
Ingham
271 assetsWIS 42

Aquifer Type Mix

unconfined
414
Avg WIS 44
confined
323
Avg WIS 52
fossil
1
Avg WIS 77

Top 10 Water Assets in Michigan

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

View all on map
  1. 1

    Mount Simon Deep Fossil Aquifer — Southern Michigan

    Fossil Water
    Jackson County·100 GPM
    77
    WIS
  2. 2

    Jacobsville Sandstone Aquifer — Upper Peninsula Michigan

    Aquifer
    Marquette County·200 GPM
    73
    WIS
  3. 3

    Marshall Aquifer — Southern Michigan

    Aquifer
    Calhoun County·300 GPM
    73
    WIS
  4. 4

    Victoria

    Reservoir
    ·9,425,451 GPM
    67
    WIS
  5. 5

    Empire Mine Tailings Basin Dam

    Reservoir
    ·35,906 GPM
    67
    WIS
  6. 6

    Ludington

    Reservoir
    ·30,520,508 GPM
    67
    WIS
  7. 7

    Gribben Tailings Basin Dam

    Reservoir
    ·10,323 GPM
    67
    WIS
  8. 8

    Minnawanna Dam

    Reservoir
    ·127,917 GPM
    66
    WIS
  9. 9

    Lake Isabella Dam

    Reservoir
    ·5,206,440 GPM
    66
    WIS
  10. 10

    Sturgeon Falls

    Reservoir
    ·10,682,178 GPM
    66
    WIS
Avg Flow Rate
252,238 GPM
Avg Depth
126 ft
For Sale
0
Fossil Water
1

Explore Michigan on the Interactive Map

View all 107,514 water assets, aquifer boundaries, water rights data, and regulatory alerts for Michigan.