Drought risk in Missouri

Drought Characteristics in Missouri

Missouri experiences periodic droughts that can affect all regions of the state, though the timing, severity, and impacts vary. Drought is a slow-onset hazard, often developing over months as precipitation deficits accumulate. According to the U.S. Drought Monitor, Missouri has seen drought conditions ranging from moderate to exceptional in recent decades. The state's climate—humid continental in the north and more subtropical in the south—means that droughts are most common during the warm season, but they can persist year-round.

Geographically, western and central Missouri, including the Ozarks, tend to be more vulnerable to drought because they receive less annual precipitation than the southeastern lowlands. The Ozark Plateau's thin soils and karst topography also reduce water retention, making streams and wells more responsive to rainfall deficits. Agricultural areas in the Missouri River Valley and northern plains are heavily dependent on timely rains, so drought there can quickly stress crops and livestock.

Peak drought risk typically occurs from late spring through early fall, when high temperatures and increased evaporation coincide with lower rainfall. However, a "flash drought" can develop rapidly during a hot, dry spell, catching communities off guard. Winter droughts are less common but can still impact soil moisture and water supplies going into the growing season. The Missouri State Emergency Management Agency (SEMA) coordinates drought response and works with local agencies to monitor conditions and implement conservation measures when needed.

How It Affects Homes

Drought can have significant and sometimes costly effects on homes and properties in Missouri. One of the most common issues is foundation damage. Many Missouri soils contain expansive clays that shrink when they dry out, causing the ground to pull away from foundations. This can lead to cracks in walls, uneven floors, and sticking doors or windows. Similarly, drought can cause soil to settle around driveways, patios, and sidewalks, creating trip hazards and structural problems.

Water supply is another concern. Homes that rely on private wells may experience reduced water levels or even dry wells during prolonged drought. Municipal water systems can also face shortages, leading to mandatory water restrictions. Even if your water supply remains intact, drought can increase water bills if you need to irrigate landscaping to keep plants alive.

Landscaping and lawns often suffer first. Without adequate moisture, grass turns brown, trees and shrubs become stressed, and long-term damage can kill plants. Drought also raises the risk of wildfires, which can threaten homes in rural and wildland-urban interface areas. Additionally, low water levels in ponds and streams can affect firefighting capabilities.

From an insurance perspective, standard homeowners policies typically exclude damage from drought-related earth movement, such as foundation cracking caused by soil shrinkage. However, some policies may cover sudden and accidental damage to plumbing or wells. It's important to review your policy and discuss with your agent whether any endorsements are available. Flood insurance is separate and does not cover drought, but drought can increase flood risk when rains eventually return because dry soil repels water.

How to Prepare Your Home

Taking proactive steps can reduce your home's vulnerability to drought and help you conserve water. Consider the following measures:

• Conserve water indoors: Fix leaky faucets and toilets promptly. Install WaterSense-labeled fixtures and appliances, which use less water without sacrificing performance. The EPA WaterSense program offers tips and product lists.
• Landscape with drought-tolerant plants: Replace thirsty lawns with native or drought-resistant groundcovers, shrubs, and trees. Group plants by water needs and use mulch to retain soil moisture.
• Water wisely: Water deeply and infrequently to encourage deep roots. Water early in the morning or late evening to reduce evaporation. Consider drip irrigation or soaker hoses instead of sprinklers.
• Protect your foundation: During prolonged dry spells, you may need to water your foundation perimeter to keep soil from shrinking. Use a soaker hose placed about 12-18 inches from the foundation, and avoid overwatering, which can cause other problems.
• Maintain your well: If you have a private well, have it inspected regularly. Lower the pump if necessary, and consider drilling deeper if drought is a recurring issue. Keep emergency water stored for drinking and sanitation.
• Create defensible space: In rural areas, reduce wildfire risk by clearing dry brush and vegetation from around your home. Keep gutters free of leaves and debris.
• Monitor drought conditions: Follow local water restrictions and stay informed through the U.S. Drought Monitor and Drought.gov.

These steps not only help during drought but also make your home more resilient to other climate extremes.

Frequently Asked Questions

Is Missouri currently in a drought?

Drought conditions change frequently. To see current conditions, check the U.S. Drought Monitor, which provides weekly maps and assessments for Missouri and the entire country. Drought.gov also offers state-specific drought information and outlooks.

Does homeowners insurance cover drought damage?

Most standard homeowners insurance policies do not cover damage from drought, especially earth movement like foundation cracking due to soil shrinkage. However, some policies may cover sudden damage to plumbing or wells. Review your policy carefully and speak with your insurance agent about available endorsements or separate coverage.

How can I conserve water during a drought?

Start with indoor fixes: repair leaks, install WaterSense-labeled fixtures, and take shorter showers. Outdoors, water lawns and gardens early in the morning, use mulch, and choose drought-tolerant plants. The EPA WaterSense website has many practical tips for saving water at home.

Official Resources

• Missouri State Emergency Management Agency (SEMA) – Coordinates drought response and provides preparedness information.
• U.S. Drought Monitor – Weekly maps and data on drought conditions nationwide.
• Drought.gov – Federal resource for drought data, forecasts, and impacts.
• EPA WaterSense – Water conservation tips and product information.