USGS Finds South Dakota Aquifers Declining as Drought Deepens
South Dakota, US
Source Analysis
What Happened
Key Implications
What Happened
Key Implications
Timeline
November 09, 2026 Upcoming
Major Mining Water Proposal Filed: Water-use applications filed recently propose drilling up to 1,000 wells into the Inyan Kara aquifer (and additional wells into the Madison) to withdraw nearly 2.4 billion gallons per year, with public comment accepted through Nov. 9, 2026 and a South Dakota Water Management Board hearing set for Dec. 2, 2026. The proposals underscore competing demands on shrinking aquifer supplies.
November 02, 2026
State Response and Planning Accelerates: Lawmakers and water managers have moved to respond: the 2026 Legislature seeded a $3 million Water Infrastructure Development Fund, officials held late-October planning meetings about roughly $13 billion in future system expansions, and studies/proposals (including Missouri River pipeline options) are being pursued as officials warn future growth may require major new supplies.
October 31, 2026
Streams, Ponds, Wells Dry Up: By late October, creeks and smaller surface sources were running dry — Spring Creek east of Sheridan Lake was completely dry on Oct. 31, 2026 — and reports show rural wells, ponds and spring-fed features have run low or gone dry across West River. These losses are tied to both low precipitation and reduced aquifer levels.
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Source Analysis
Timeline
November 09, 2026 Upcoming
Major Mining Water Proposal Filed: Water-use applications filed recently propose drilling up to 1,000 wells into the Inyan Kara aquifer (and additional wells into the Madison) to withdraw nearly 2.4 billion gallons per year, with public comment accepted through Nov. 9, 2026 and a South Dakota Water Management Board hearing set for Dec. 2, 2026. The proposals underscore competing demands on shrinking aquifer supplies.
November 02, 2026
State Response and Planning Accelerates: Lawmakers and water managers have moved to respond: the 2026 Legislature seeded a $3 million Water Infrastructure Development Fund, officials held late-October planning meetings about roughly $13 billion in future system expansions, and studies/proposals (including Missouri River pipeline options) are being pursued as officials warn future growth may require major new supplies.
October 31, 2026
Streams, Ponds, Wells Dry Up: By late October, creeks and smaller surface sources were running dry — Spring Creek east of Sheridan Lake was completely dry on Oct. 31, 2026 — and reports show rural wells, ponds and spring-fed features have run low or gone dry across West River. These losses are tied to both low precipitation and reduced aquifer levels.
