Site Name: Shatto Ditch
Site Location: Kosciusko County, IN
Receiving Waterbody: Tippecanoe River→Wabash River→Mississippi River
Year Constructed: 2007
Project History and Purpose:
Shatto Ditch is a tributary to the Tippecanoe River and drains a watershed with row crops and agriculture (90%), forest (3%), residential areas (5%), and water and wetlands (1%). Watershed soils include Hydrologic Soil Groups A, B, C, and D. The project was initiated by The Nature Conservancy and was funded in part through an EPA Indiana Department of Environmental Management 319 grant. The project was intended to be a demonstration project to introduce Indiana to the two-stage channel concept and to evaluate the impacts of installation of the technology on the ground. The Nature Conservancy, Kosciusko County Surveyor, and the local NRCS and the Soil and Water Conservation District comprised the committee that helped to pick the site and organize the landowners (Creighton Brothers Farms and Michael Long).
Shatto Ditch showed signs of instability and 4 years prior to construction of the two-stage channel it was bottom dipped to clean the substrate of sediments. The Shatto Ditch demonstration site has a half mile of ditch that was constructed in to a two-stage channel design and a half mile upstream segment that was maintained as a control segment to determine what the ditch would have done on its own overtime. Essentially there are three bench heights along Shatto Ditch as a result of the tile inputs at various points in the ditch as more water in the system required an increase in bench height. Benches were constructed on both side for the majority of the project with bench widths at 2 to 3 times the channel bankfull width, with an occasional bend in the ditch constituting a 4 times channel width bench. This ditch is located within a mile of the Tippecanoe River and north of the town of Mentone, IN. The Nature Conservancy first began looking at and continue to use the two-stage channel design as a tool in the toolbox; a design that uses existing infrastructure, yet allows the ditch to provide more of a function that moving water from point A to Point B as now it filters and uptakes nutrients and sediments. The Shatto Ditch was one of the first two-stage channels in the country to have preconstruction monitoring done on it for a year prior to construction. Notre Dame University continues to monitor and perform research at this site. TNC continues to use Shatto Ditch as a demonstration site in Indiana to increase the application of them throughout the state as a way to improve water quality and function in agricultural drainage ditches.
Geographic location of Shatto Ditch.
Shatto Ditch prior to two-stage modification.
Shatto Ditch during flood conditions.
Shatto Ditch 1 year after two-stage construction.
SITE PHYSICAL CHARACTERISTICS
Drainage Area: 4.6-square miles
Channel Slope: 0.3%
Project Length: 2100-feet
Earthwork Cost: $10,500
- Soil Excavation, Hauling, and Disposal: $10,500
- 4,674-cubic yards @ $2.25 per cubic yard
- 2.2-cubic yards per linear foot of channel
- $5.00 per linear foot
Outlet protection and erosion control: Included in cost of earthwork
Seed and Seeding: None
Engineering, survey, and inspection: $0 (in-kind contribution)
Total Cost: $10,500
Cost per linear foot: $5.00