Dams and Hydros

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Molly Maciejewski
Water Treatment Services Manager

919 Sunset Road
Ann Arbor, MI 48103
Phone: 734.794.6426​
Email: [email protected]

Business Hours: M-F 8 a.m.-5 p.m. (except city holidays)​

Open 24 hours a day, seven days a week for water emergencies: 734.994.2840

​​​​​​​​The water treatment services unit operates and maintains four dams located on the Huron River: Barton, Argo, Geddes, and Superior. Two of the dams (Barton and Superior) generate hydroelectric power.  At peak power production these two dams can create enough electricity to power 1500 homes.  All four dams are operated to maintain pond levels. Each of the dams has an automatic controller designed to maintain the pond level within a 0.1 foot range.

Daily Pond Elevation and River Flow Data (most recent calendar month)​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​

Barton Dam and Hydro


 Argo Dam 


 Geddes Dam


Superior Dam and Hydro