Stream flow information is essential for understanding the state of Minnesota's waters. Clean water funding has allowed the DNR to expand a network of stream gages that support planning and implementation for clean water protection and restoration. These gages are also used as part of the interagency Flood Forecasting/Warning System. This expanded stream gaging network has also significantly increased the real time data available to recreational water enthusiasts via the internet.
The DNR provides technical support related to the causes of altered hydrology and watershed management solutions. We use state-of-the-art models and statistical methods to look at cumulative impacts of drainage and land-use practices and determine the benefits of best management practices. This involves collaboration with multiple partners at multiple scales.
DNR regional clean water specialists and area hydrologists work with regional staff from other state agencies and with local partners to help identify the causes of pollution problems and determine the best strategies for fixing them. We collect and analyze stream channel stability and streambank erosion data to help identify root causes of certain water quality impairments in streams.
The Watershed Health Assessment Framework (WHAF) is a web-based tool for resource managers and others interested in the ecological health of Minnesota's watersheds. The framework uses five ecological components to organize and deliver information about watershed health conditions in Minnesota. The five components are hydrology, connectivity, biology, geomorphology, and water quality. Statewide GIS data from DNR and partner agencies are used to calculate health scores that reveal similarities and differences between watersheds.
This project delineates and maps watersheds (drainage areas) of lakes, rivers, streams, and wetlands for the state of Minnesota and provides watershed maps in digital form for use in geographic information systems. These maps become the basis for clean water planning and implementation efforts.