Water sources, both natural and man-made, are useful for humans and ecosystems. Missouri’s lakes, rivers, streams, springs, wetlands and groundwater provide drinking water, wildlife habitat, water for agriculture and industrial uses, recreational and tourism opportunities and more. Groundwater is a main source of drinking water for most Missourians and provides much of the water used to irrigate crops. The Missouri Department of Natural Resources is responsible for protecting the quality of Missouri's water sources. Protecting our water also protects human health, our ecosystems and Missouri’s economy.

Water sources are generally categorized based on where the water is stored. Groundwater is located below the earth's surface, in the ground in spaces between rock and soil. Surface water collects on the ground, in streams, rivers, ponds, lakes, reservoirs or oceans. Learn more about Missouri's various water sources below.

Groundwater - Aquifers
Water located underground in spaces between Missouri's soil, sand and rock
Springs
Where groundwater pushes out of aquifers and into streams, lakes and wetlands
Streams and Rivers
Bodies of flowing freshwater that move downhill in channels
Losing Streams
Streams where a significant amount of its water is diverted underground
Lakes and Reservoirs
Bodies of standing surface water fed by rain, snowmelt, springs, streams and rivers
Interstate Waters
Surface water bodies that cross or form a border between two or more U.S. states
Wetlands
Transition zones between dry land and open water that support unique plants and animals
Watersheds
Areas of land that channel rain and snowmelt into Missouri's waterbodies
Water Monitoring
How we measure and evaluate the safety of water bodies; assessments; water levels
Impaired Waters
Water bodies that are not meeting Water Quality Standards
Alerts and Water Hazards
Boil Water Orders, floods, droughts and other dangerous conditions
Missouri Hydrology Information Center
Providing communities needed information to ensure their safety and protect property