The department and its Water Resources Center has statutory authority for water quantity issues such as statewide water use and availability, water resources monitoring and planning, drought assessment, flood and hydrology studies and wetland studies. Missouri shares its water with bordering states, 26 other states (as either an upstream or downstream state) and two Canadian provinces. The Water Resources staff represents Missouri on water resource issues that traverse political boundaries including the Mississippi, Missouri and White rivers and their basins.

Drought Information

Drought News, Conditions and Resources.


The Surface Water Section provides technical support by performing water supply analyses, in-stream flow assessments and floodplain studies. The surface water section also administers the collection and analysis of statewide water use data in accordance with the Major Water User Law.

Major Water Users

Any surface or groundwater user with a water source and the equipment necessary to withdraw or divert 100,000 gallons or more per day (70 gallons per minute) from any stream, river, lake, well, spring or other water source is considered a major water user in Missouri.  All major water users are required by law to register water use annually. The Department of Natural Resources does not regulate the use of water - only the amount of water a major water user has the potential to use.

Online Annual Registration and Printable Major Water Use Annual Registration Forms


The Groundwater Staff operates and maintains a groundwater level observation well network for monitoring Missouri’s aquifers. Collection and analysis of groundwater data provides knowledge of available water quantity, aquifer response to water use, groundwater recharge and aquifer characteristics.

Leaky basements and a saturated yard may be the result of poor drainage around your house. If this applies to you, visit this link Basement and Yard Water Problems

Interstate Waters

The Interstate Waters Staff coordinates issues relating to major river basins that affect Missouri, and provides technical support for negotiations and litigation actions to protect the state’s rights to this water


Wetlands are transition areas between dry land and open waters; however, they are not always wet. These areas can provide habitat for fish and wildlife and recreation areas for people to hunt, fish and enjoy watching nature. Missouri has eight types of natural wetlands including: swamps, shrub swamps, forested wetlands, marshes, wet meadows, fens and seeps, pond and lake borders and stream banks.