Drought risk in Montana

Drought Characteristics in Montana

Montana's climate varies dramatically from the Rocky Mountains in the west to the semi-arid plains in the east. Drought is a natural part of this climate, and it can affect any part of the state. However, eastern Montana is generally more exposed to frequent and severe drought, while western valleys and mountains may experience drought primarily through low snowpack. Snowpack in the mountains acts as a critical water reservoir; when winter snows are below normal, spring and summer water supplies can run short. Drought can develop slowly over months or rapidly during hot, dry, windy periods—sometimes called "flash drought."

Drought in Montana can occur in any season, but impacts often peak in summer and fall. Low winter snowpack can set the stage for drought the following spring. The US Drought Monitor provides weekly maps showing drought conditions across Montana, and Drought.gov offers state-specific data and resources. The Montana Disaster and Emergency Services coordinates the state's response to drought emergencies and provides guidance for residents.

How Drought Affects Homes in Montana

Drought can impact Montana homes in several ways. For households that rely on private wells, dropping water tables can reduce well yield or cause wells to run dry. Water quality may also change as water levels decline. Homes with shallow wells or those in areas with limited groundwater are most vulnerable.

Foundation damage is another concern. During drought, soils—especially expansive clay soils—shrink, which can lead to foundation settling, cracks in walls, and uneven floors. When rain eventually returns, the soil expands again, potentially causing further movement. This cycle can be costly to repair.

Drought also dries out vegetation, increasing wildfire risk. Wildfires can destroy homes, outbuildings, and landscaping. Even if a home is not directly burned, smoke damage and post-fire flooding can occur. Additionally, drought often triggers water restrictions, which can affect landscaping and outdoor water use.

Most standard homeowners insurance policies do not cover drought damage itself. For example, foundation damage caused by soil shrinking or settling is typically excluded as "earth movement." However, if a wildfire damages your home, that loss may be covered under the fire peril in your policy. It's important to review your coverage with your insurance agent to understand what is and isn't protected. Flood insurance is separate and does not cover drought.

How to Prepare Your Home for Drought

Taking steps before and during drought can reduce risks and costs. Consider the following:

• Monitor drought conditions: Check the US Drought Monitor and Drought.gov regularly to stay informed about local conditions and outlooks.
• Conserve water indoors: Fix leaks promptly, install WaterSense-labeled fixtures and appliances, and take shorter showers. EPA WaterSense offers tips and product recommendations.
• Landscape wisely: Replace thirsty lawns with drought-tolerant plants, use mulch to retain soil moisture, and group plants by water needs. Consider xeriscaping, which is well-suited to Montana's climate.
• Protect your foundation: Maintain consistent soil moisture around your foundation during dry spells by using soaker hoses or drip irrigation, but avoid overwatering. Ensure proper drainage away from the foundation to prevent erosion when rains return.
• Prepare for well issues: If you rely on a private well, test it regularly and consider deepening it or installing a storage tank. Have a plan for emergency water, such as storing bottled water or a cistern.
• Reduce wildfire risk: Create defensible space by clearing flammable vegetation, leaves, and debris from around your home. Use fire-resistant building materials and maintain a green, watered zone near structures if possible.
• Review your insurance: Talk to your agent about whether your policy covers wildfire and any drought-related damage. Ask about endorsements or separate policies that may fill gaps.
• Follow local guidance: Heed water restrictions and emergency orders from local authorities and Montana Disaster and Emergency Services.
• Harvest rainwater: Where legal, install rain barrels or cisterns to capture roof runoff for landscape irrigation. Check Montana water laws before doing so.

Frequently Asked Questions

What parts of Montana are most at risk for drought?

Eastern Montana's plains are generally more prone to frequent and severe drought because they receive less annual precipitation and have less mountain snowpack. However, drought can affect any part of the state, including western valleys and mountains, especially when winter snowpack is low. Local conditions vary, so check the US Drought Monitor for current information.

Can drought damage my home's foundation?

Yes. During prolonged dry periods, soils—particularly expansive clays common in parts of Montana—shrink, which can cause foundations to settle unevenly. This may lead to cracks in walls, sticking doors, and other structural issues. Maintaining consistent soil moisture around the foundation and ensuring proper drainage can help reduce risk.

Does homeowners insurance cover drought damage?

Standard homeowners insurance typically does not cover damage caused by drought, such as foundation movement from soil shrinkage, because it is considered earth movement. However, wildfire damage is often covered under the fire peril. Coverage can vary by policy, so review your policy and speak with your insurance agent to understand your specific protections.

Official Resources

• Montana Disaster and Emergency Services – State coordination for drought and other emergencies.
• US Drought Monitor – Weekly maps and data on drought conditions.
• Drought.gov – Federal drought resources, outlooks, and state-specific information.
• EPA WaterSense – Water-efficient products and tips to save water at home.