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Erik Stemper, a Solomon Diving, Inc. diver from Monroe, gets ready to sprint to his warm-water-fed diving suit sitting on the river bank by the Argo Dam Tuesday afternoon, Feb. 1 in Ann Arbor. Stemper was helping clear out a blocked intake valve in the dam.
Lon Horwedel | AnnArbor.com
Divers from Solomon Diving of Monroe found concrete blocks, an old motorcycle and shopping carts on top of an intake pipe that leads to the monitoring well at Argo Dam, which controls the dam gates. According to Molly Wade, water quality manager for the City of Ann Arbor, the divers were able to clear one of the water intakes, but a second one remains blocked where it enters the concrete hut that houses the control system for the dam.
Winter maintenance work was necessary on the dam because the control system that manages water levels failed on Jan. 22, causing flows downstream on the Huron River to fluctuate wildly. The repair work has restored some amount of control, but more work to clear the second intake pipe is expected this spring, according to Wade.
Thirty days of flow measurements downstream of Argo Dam, showing four days of erratic water levels.
US Geological Survey
Edward Vielmetti writes about the Huron River for AnnArbor.com.
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