The Minnesota Pollution Control Agency (MPCA) has identified streamflow alteration as a key stressor on aquatic life, but the characteristics of streamflow alteration acting as stressors have not been identified in the MPCA Watershed Restoration and Protection Strategy (WRAPS) process. Without indices that characterize streamflow alteration, the MPCA cannot quantitatively associate metrics of aquatic life condition to streamflow alteration. The lack of quantifiable indices limits the ability of the MPCA to assess environmental streamflow needs for streams and rivers throughout Minnesota.
This project will conduct on-going sampling and lab analysis for suspended sediment concentration at select sites. It will also develop real-time continuous suspended sediment concentration measurements using turbidity and Acoustic Doppler Velocity Meter sensors, data analysis and draft United States Geological Survey (USGS) Scientific Investigations Report, and comparison of sampling and laboratory methods for total suspended solids and suspended sediment concentrations.