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Hi3 Water

South Carolina Water Assets

Southeast

South Carolina's Coastal Plain aquifers are heavily used, with the Middendorf and Black Creek formations as primary groundwater sources.

Riparian46 counties tracked2236 active alerts
42,525
Total Assets
53.2
Avg WIS
22,597
Verified
2
High WIS (75+)

South Carolina Water Intelligence Report

Hi3 Water tracks 42,525 water assets across South Carolina, spanning 46 counties and 7 distinct asset types. The average Water Intelligence Score (WIS) across South Carolina is 53.2/100, with 2 assets scoring in the high-value range (75+). South Carolina operates under Riparian water law, which directly affects water rights acquisition and asset valuation in this state.

The dominant water asset type in South Carolina is Well (19,919 assets, avg WIS 44.5). The highest concentration is in Aiken County with 2,448 tracked assets.

2,236 active regulatory alerts are currently tracked in South Carolina, 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 2, 2026.

Asset Types in South Carolina

Well
19,919
Avg WIS 44.5
River
18,991
Avg WIS 64.3
Reservoir
2,449
Avg WIS 42.7
Lake
1,148
Avg WIS 42.0
Spring
16
Avg WIS 44.3
Aquifer
1
Avg WIS 77.0
Fossil Water
1
Avg WIS 77.0

Intelligence Grade Distribution

How South Carolina assets are graded

S (≥90) — Exceptional0 (0.0%)
A (75-89) — Excellent2 (0.0%)
B (55-74) — Good18,914 (44.5%)
C (35-54) — Fair23,609 (55.5%)
D (<35) — Limited0 (0.0%)

Regulatory Alerts

Drought, EPA violations, and enforcement actions affecting South Carolina

49
critical
54
high
2062
medium
71
low
0
info
AIW AT HIGHWAY 544 AT SOCASTEE, SC — Gage Height 12.5 ft
usgs_flood · flood_warning
AIW AT HIGHWAY 9 AT NIXONS CROSSROADS, SC — Gage Height 12.0 ft
usgs_flood · flood_warning
WACCAMAW RIVER AT SC-22 BELOW LONGS, SC — Gage Height 10.6 ft
usgs_flood · flood_warning

Top Counties in South Carolina

Aiken
2,448 assetsWIS 51
Beaufort
2,308 assetsWIS 43
Lexington
1,554 assetsWIS 43
Greenville
1,514 assetsWIS 44
Barnwell
961 assetsWIS 49
Charleston
908 assetsWIS 44
Horry
853 assetsWIS 44
Colleton
743 assetsWIS 43
Richland
692 assetsWIS 44
Berkeley
585 assetsWIS 42
Orangeburg
570 assetsWIS 43
York
455 assetsWIS 43

Aquifer Type Mix

unconfined
6,446
Avg WIS 45
confined
3,743
Avg WIS 53
fossil
1
Avg WIS 77

Top 10 Water Assets in South Carolina

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

View all on map
  1. 1

    Middendorf Aquifer — Midlands South Carolina

    Aquifer
    Lexington County·500 GPM
    77
    WIS
  2. 2

    Middendorf Deep Fossil Aquifer — South Carolina Coastal Plain

    Fossil Water
    Florence County·600 GPM
    77
    WIS
  3. 3

    Fishing Creek

    Reservoir
    ·50,000,000 GPM
    67
    WIS
  4. 4

    Rocky Creek-Cedar Creek

    Reservoir
    ·50,000,000 GPM
    67
    WIS
  5. 5

    Chattooga River

    River
    ·38,265 GPM
    67
    WIS
  6. 6

    Keowee

    Reservoir
    ·11,669,606 GPM
    67
    WIS
  7. 7

    Wylie

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

    Clear Creek

    River
    ·12,000 GPM
    67
    WIS
  9. 9

    Norton Mill Creek

    River
    ·8,230 GPM
    67
    WIS
  10. 10

    Green River

    River
    ·17,955 GPM
    67
    WIS
Avg Flow Rate
238,705 GPM
Avg Depth
207 ft
For Sale
0
Fossil Water
1

Explore South Carolina on the Interactive Map

View all 42,525 water assets, aquifer boundaries, water rights data, and regulatory alerts for South Carolina.

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