Drought risk in South Dakota

Drought characteristics in South Dakota

South Dakota is rated level 4 of 5 for drought risk, making it one of the more drought-prone states in the Upper Midwest. The state’s climate ranges from semi-arid conditions in the west to more humid continental conditions in the east, yet drought can strike every region. Western South Dakota, including the Black Hills and the plains around the Missouri River, often experiences drier conditions and more intense short-term droughts. Eastern areas near the Big Sioux River also see drought, though typically shorter and less severe.

Drought in South Dakota is driven by a combination of low precipitation, high summer temperatures, and strong winds that evaporate soil moisture quickly. The state relies heavily on winter snowpack in the Rocky Mountains and local rainfall to recharge the Missouri River system and its tributaries. When snowfall is below normal or spring rains fail, drought can develop by early summer and intensify through the growing season. The US Drought Monitor, which releases weekly maps, frequently shows areas of moderate to severe drought in South Dakota, particularly during late summer and fall.

Most of the state’s agricultural land is vulnerable because rain-fed crops such as wheat, corn and soybeans depend on consistent moisture. Ranchers also face reduced pasture and hay yields. However, drought also affects homeowners, especially those relying on private wells or small water systems. A typical multi-month drought can lower groundwater levels and reduce streamflow, making water conservation critical.

How it affects homes

Drought does not usually cause sudden structural damage like floods or tornadoes, but it can create costly problems over time. The most common issue is soil shrinkage. South Dakota soils, especially in the eastern part of the state, contain clay that expands when wet and contracts when dry. During prolonged drought, the soil dries and pulls away from foundations, leading to cracks, settling, or heaving. Homeowners may notice hairline cracks in drywall, doors that stick, or visible gaps around windows and exterior walls.

Drought also raises the risk of wildfires, particularly in rangeland and forested areas like the Black Hills. Dry grass and brush fuel the flames, and a single spark can threaten homes. Even homes not directly in the wildland-urban interface can face smoke damage or evacuation orders. Landscape plants and turf grass often die, leaving bare soil that can erode when rains finally return.

For homeowners with private wells, drought can lower the water table, reducing or even stopping water flow. Well pumps may suck air, and drilling a deeper well is expensive. Municipal water suppliers may impose watering restrictions, and some households face higher water bills due to usage limits. Homeowners insurance generally does not cover drought-related foundation damage, well failure, or landscaping losses. It may cover wildfire damage, but only if the policy includes fire coverage, which is standard in most homeowner policies. However, flood damage caused by post-drought heavy rain is not covered under standard policies and requires separate flood insurance.

How to prepare your home

• Inspect your foundation: Look for cracks or movement around doors and windows. Seal gaps with exterior caulk to reduce water loss and protect against soil shrinkage.
• Conserve water indoors: Fix leaks in toilets, faucets and pipes. Install EPA WaterSense labeled low-flow showerheads and aerators. Use washing machines and dishwashers only with full loads.
• Reduce outdoor water use: Water lawns deeply but infrequently, and only early in the morning. Set sprinklers to avoid sidewalks and driveways. Use a broom rather than a hose to clean paved surfaces.
• Plant drought-resistant trees and shrubs: Choose native species that tolerate dry conditions. Mulch around plants to retain soil moisture. Let lawns go dormant during the hottest, driest months.
• Capture rainwater: Install rain barrels to collect runoff from gutters and downspouts. Use this water for gardens or window washing (check local regulations first).
• Monitor well water levels: If you rely on a private well, test water levels monthly during high summer. Install a low-water cutoff device to protect the pump from running dry.
• Create a wildfire defensible space: Clear dry grass, leaves and branches within 30 feet of your home. Keep gutters clean. Store firewood at least 30 feet away. Use non-combustible roofing and siding where possible.
• Stay informed: Follow the US Drought Monitor and your local weather service. Sign up for emergency alerts from the South Dakota Office of Emergency Management.

Frequently asked questions

How likely is a drought in South Dakota?

South Dakota experiences drought on a regular cycle. The US Drought Monitor shows at least part of the state in a drought almost every year, though severity varies. Major statewide droughts have occurred several times in recent decades, and historical records show these events are normal for the region.

Does homeowners insurance cover drought damage?

No, standard homeowners insurance does not cover damage caused by drought directly, such as cracked foundations or dead trees. It can cover fire damage from a wildfire that occurs during drought, but you may still need flood insurance for any rainstorm after the drought. Check your policy or talk to your agent for specifics.

What is the most effective thing I can do to prepare?

The most effective step is improving your home’s water efficiency and resilience. Installing WaterSense fixtures, fixing leaks, and adjusting your outdoor watering practices can cut your water use by up to 30% or more, reducing stress on your well or local supply and helping your landscaping survive dry spells.

Official resources

• South Dakota Office of Emergency Management
• US Drought Monitor
• Drought.gov
• EPA WaterSense