Drought risk in South Dakota

Drought in South Dakota: what makes it different

South Dakota sits in the middle of the Great Plains, where drought is a normal part of the climate cycle but can still be severe and costly. The state has a continental climate with wide swings in temperature and precipitation. Eastern South Dakota generally receives more rain than the west, while the western half — especially the areas west of the Missouri River — is semi-arid and more frequently exposed to long dry spells. The Black Hills can be wetter than surrounding plains, but even there, dry winters and hot summers can reduce streamflow and soil moisture.

Drought can develop in any season. A dry winter with below-normal snowpack can limit spring runoff and leave soils short of moisture before the growing season begins. Spring and early summer rain is important for crops and pastures. By July and August, high temperatures and strong winds can quickly pull moisture from soils, creating flash drought conditions. The U.S. Drought Monitor, a weekly map produced by federal and academic partners, tracks drought intensity from D0 (abnormally dry) to D4 (exceptional drought). In South Dakota, D2 to D4 conditions have affected large areas in multiple years, though the specific footprint changes from week to week and year to year.

The most drought-exposed areas are often the western and central counties, where annual precipitation is lower and reliance on rangeland, dryland farming, and rural water systems is higher. However, drought is not limited to the west. Eastern South Dakota can see crop stress, low stock ponds, and municipal water restrictions during prolonged dry periods. Drought also interacts with other hazards: dry vegetation increases wildfire risk, low water levels can affect Missouri River reservoirs and recreation, and poor pasture conditions can stress livestock and farm income.

How it affects homes

Drought is usually thought of as an agricultural and water-supply hazard, but it can affect homes directly. The most common property concern is soil movement. When soils dry out, they shrink; when they rewet, they can swell. This cycle can cause foundations to settle unevenly, leading to cracks in foundation walls, basement floors, driveways, patios, and sidewalks. Doors and windows may begin to stick, and gaps can appear around exterior trim. Homes on clay-rich soils that shrink and swell may be especially vulnerable, though damage depends on soil type, foundation design, drainage, and how long dry conditions last.

Rural homeowners and those on private wells may face water-supply problems. A prolonged drought can lower the water table, reduce well yield, and force deeper pumping or water hauling. Municipal systems may impose watering restrictions or ask residents to conserve. Low water levels can also concentrate pollutants in some water sources, so local utilities may issue boil-water notices or other advisories if treatment capacity is stressed, though this varies by system.

Drought also raises wildfire risk. Dry grass, brush, and trees can ignite more easily, and fires can spread quickly when humidity is low and winds are strong. For homes near wildland areas, this can be a greater immediate threat than foundation movement.

Insurance considerations: Standard homeowners insurance typically covers sudden and accidental damage from fire and some water-related events, but it generally does not cover gradual damage from drought-related settling, earth movement, or lack of maintenance. Foundation cracks caused by soil shrinkage may be excluded or treated as a maintenance issue. Flood damage is not covered by standard homeowners policies; separate flood insurance is available through FEMA's National Flood Insurance Program and private insurers. If you have a private well, check whether your policy includes water backup or service-line coverage, and ask your agent specifically how drought-related damage would be handled. For farms and ranches, crop insurance and livestock programs are separate from a homeowners policy.

How to prepare your home

You can reduce drought-related risk before and during dry periods. Focus on water efficiency, foundation care, and wildfire readiness.

• Conserve water inside: Fix leaks promptly. Install WaterSense-labeled faucets, showerheads, and toilets. Run dishwashers and washing machines only with full loads. These steps lower demand on wells and municipal supplies, which matters most when drought restrictions are in place.
• Improve outdoor efficiency: Use drought-tolerant native grasses and plants, group plants by water need, and add mulch to reduce evaporation. Water deeply and less often, early in the morning, and adjust irrigation schedules based on rainfall. Follow local watering restrictions.
• Capture and reuse water where allowed: Rain barrels and cisterns can collect roof runoff for gardens, but check state and local rules before installing them. Never use gray water or rainwater for drinking without proper treatment.
• Maintain consistent soil moisture around foundations: During extended dry spells, some foundation professionals recommend keeping soil around the foundation from pulling away, but overwatering can also cause problems. Use soaker hoses or drip irrigation sparingly if advised, and direct water away from the foundation with proper grading, downspouts, and swales.
• Monitor foundation and basement: Note new cracks, sticking doors, or uneven floors. Have a licensed structural or foundation professional evaluate significant changes. Small cracks should be sealed to reduce water entry when rains return.
• Protect your well: Test water quality annually, keep well records, and avoid overpumping. If your well is shallow or has low yield, plan for water storage or a backup supply before a drought worsens.
• Create defensible space: Clear dry leaves, pine needles, and dead vegetation from within at least 30 feet of the home. Keep gutters clean, store firewood away from the house, and use fire-resistant roofing and siding where possible.
• Prepare an emergency water supply: Store at least one gallon per person per day for several days, plus water for pets. Rotate stored water according to guidance from Ready.gov or your local emergency manager.
• Review insurance and document your home: Take photos or video of your home's condition, keep receipts for repairs, and talk with your insurance agent about exclusions for earth movement, settling, and water damage.

Frequently asked questions

Is drought really a serious risk in South Dakota?

Yes. South Dakota is rated level 4 of 5 for drought in the state's hazard risk profile, meaning drought is a high-priority hazard. The state's position in the Great Plains, with lower precipitation in the west and variable rainfall statewide, makes it vulnerable to multi-year dry periods. The U.S. Drought Monitor regularly shows areas of South Dakota in moderate to exceptional drought, and Drought.gov provides current conditions and outlooks.

How can drought damage my home's foundation?

When soil dries, it shrinks and can pull away from a foundation. If the soil under different parts of the home dries at different rates, the foundation may settle unevenly. This can cause cracks in foundation walls, basement floors, brick veneer, drywall, and concrete slabs. Sticking doors and windows are another sign. Damage is usually gradual and may not appear until after the drought ends or when heavy rains return.

Does homeowners insurance cover drought damage?

Usually not for gradual damage. Standard homeowners policies typically exclude earth movement, settling, and deterioration, and drought-related foundation cracks are often considered gradual or maintenance-related. However, fire damage from a drought-fueled wildfire may be covered. Flood damage requires separate flood insurance. Because policies vary, review your coverage with a licensed agent and ask specifically about drought, settling, and water backup.

Official resources

• South Dakota Office of Emergency Management — state preparedness, response, and recovery information.
• U.S. Drought Monitor — weekly national drought intensity maps, including South Dakota.
• Drought.gov — federal drought conditions, outlooks, and impact resources.
• EPA WaterSense — water-efficient products and conservation tips for homes.