Sediment monitoring and streamflow modeling before and after a stream restoration in Rice Creek, Minnesota, 2010–2019

Joel T. Groten; Colin T. Livdahl; Stephen B. DeLong; J. William Lund; Jonathan M. Nelson; Erin N. Coenen; Jeffrey R. Ziegeweid; Matthew J. Kocian

doi:10.3133/sir20225004

USGS · sir20225004

Sediment monitoring and streamflow modeling before and after a stream restoration in Rice Creek, Minnesota, 2010–2019

Joel T. Groten·Colin T. Livdahl·Stephen B. DeLong·J. William Lund·Jonathan M. Nelson·Erin N. Coenen·Jeffrey R. Ziegeweid·Matthew J. Kocian

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Abstract

The Rice Creek Watershed District (RCWD) cooperated with the U.S. Geological Survey to establish a 10-year suspended sediment and bedload monitoring and streamflow modeling study to evaluate the effects of two restored meander sections on middle Rice Creek in Arden Hills, Minnesota. The RCWD goals of this stream restoration were to reduce water quality impairments, improve aquatic habitat, and reduce associated costs of dredging a sedimentation pond. During the study there were several factors that introduced uncertainty in the sampling results; however, the sampling results indicated there was an increase in the post-stream restoration sediment data because of higher streamflows during the post-stream than the pre-stream restoration monitoring period. The negative relation between suspended fines and streamflow was explained by a reduction in the supply of fines with increasing streamflows. The positive relation among suspended sand, bedload, and streamflow was because of those constituents having a functional relation with the hydraulic properties of flow and a consistent supply of sand. Two-dimensional flow modeling simulations indicated the downstream restored section had less shear stress, more pools, and could access the floodplain at a lower streamflow than the original channel. Overall, the uncertainty of the sampling results indicates the complexity of sediment transport in a river and suggests a need for multisite, multifaceted, multiyear data, and tools to simulate those data to effectively evaluate river restorations.

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Source-reported bounding extent: 45.08236949749694° to 45.09957848291159° latitude; -93.21710586547852° to -93.18449020385742° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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BibTeX RIS

Joel T. Groten, Colin T. Livdahl, Stephen B. DeLong, J. William Lund, Jonathan M. Nelson, Erin N. Coenen, Jeffrey R. Ziegeweid, Matthew J. Kocian. 2022-03-10. Sediment monitoring and streamflow modeling before and after a stream restoration in Rice Creek, Minnesota, 2010–2019. https://doi.org/10.3133/sir20225004

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