397935 - Results from the real-time control of an urban watershed: coordinating outflows to shape flows and water quality
Monday, June 4
4:00 PM - 5:30 PM
Location: Greenway AB
We discuss the performance of a “smart” urban watershed in Ann Arbor, Michigan, across which multiple stormwater facilities (basins, wetlands, etc.) are controlled in real-time to achieve watershed-scale outcomes. We illustrate how weather forecasts are combined with streaming data from over twenty sensors distributed across a three-square-mile watershed to coordinate releases from basins and wetlands. In particular, we focus on the challenge of “shaping” hydrographs at the outlet of the larger watershed by opening and closing valves at each of the locally-controlled sites. Results indicate that not only can general objectives be achieved (reducing stream flashiness and TSS loads), but also that hydrographs can be nearly-arbitrarily shaped (squares, triangles, sinusoids, etc.). We discuss how these generalized experimental results can now be used to create real-time control strategies across the scale of entire watersheds.