Reconnaissance Analysis Completed for Senachwine Creek Watershed

Holocene stratigraphy is shown in the far  bank of the Senachwine Creek.The Institute of Natural Resource Sustainability Watershed Assessment Group includes representatives from Illinois State Water Survey (Bill White and others), Illinois State Geological Survey (ISGS) (Drew Phillips), and Illinois Natural History Survey (Greg Sass). Group members met with COE-Rock Island and Natural Resources Conservation Service representatives to conclude the reconnaissance analysis of ecosystem conditions in the Senachwine Creek watershed, Peoria and Marshall Counties. Reconnaissance activities were funded by Illinois Department of Natural Resources. Drew Phillips, Geoff Pociask, and Jennifer Carrell of the ISGS constructed analytical maps that integrated new and archival observations of channel and landscape conditions. The group identified areas where land use and geology may have destabilized stream channels, leading to abnormally high sediment loads and poor habitat. The ISGS group decided to pursue feasibility analysis, including detailed channel surveying and hydraulics and hydrology modeling along two ~5-mile reaches of Deer and Little Senachwine Creeks. The project goal is to identify and design specific ecosystem restoration projects for each reach and implement those projects along one of the reaches while retaining the other as a control. Reconnaissance continues in the Ten Mile Creek watershed, Tazewell and Woodford Counties.