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Fox River Stratton Operations Status Update

William G. Stratton-Thomas A. Bolger Lock and Dam

Algonquin Dam

IDNR Announces 2023 Operating Schedule for Stratton Lock

MCHENRY, IL – The Illinois Department of Natural Resources (IDNR) today announced the operating schedule for the William G. Stratton-Thomas A. Bolger Lock and Dam facility on the Fox River in McHenry County, which opens for the 2023 season on Monday, May 1. 

Normal operating hours will be seven days per week from 8:00 a.m. until midnight during the months of May through September, and 8:00 a.m. until 8:00 p.m. for the month of October.

The Stratton-Bolger facility is closed for the winter season each year from November 1 through April 30.  


Update: *This Update is based on the current forecast and will be adjusted based on future forecasts and rainfall.


Winter Drawdown will begin on Wednesday. The process should take approximately four weeks. This will be the final update of the season. There is currently 0.5” rain forecasted for the watershed during the next seven days. Based on the 7-Day Inflow forecast, inflows will peak on Sunday.