Two-stage channels (Figure 1A) are an alternative design for open channel systems, which typically are constructed and maintained as a trapezoidal shape (Figure 1B). The two-stage channel design is a more sustainable approach to surface drainage management that provides channel stability, additional drainage capacity, and water quality and habitat benefits. This fact sheet describes typical costs involved in constructing a two-stage ditch, based on nine case study examples from the upper Midwest region of the United States.
Number of Pages
University of Wisconsin Extension (Madison, Wisconsin)