The drawdown lowers the water to just below the sill of the Byllesby Dam, forming the reservoir. To lower the water level in the reservoir without causing an abrupt change, about 1 inch of water is released daily. The reservoir will remain at its winter level until May 15 when refilling 3 feet to the summer elevation of 856.7 feet above sea level is permitted.
Construction on the Byllesby Dam will have no effect on the fall drawdown or spring refill.
For more information, visit www.dakotacounty.us and search reservoir water levels.