Five gates of the Conowingo Dam were opened Oct. 30, as the dam was operating under spill conditions.
"That should not give us any significant effect," Teresa Walter, chief of the Havre de Grace Police Department, said of the impact on her jurisdiction.
Dam officials anticipated opening three to seven additional gates by Wednesday morning. The dam has 50 gates total.
Havre de Grace was under a coastal flood advisory until noon Wednesday, with water levels one foot above normal, according to the National Weather Service.
In the meantime, Havre de Grace authorities were keeping a close eye on the tides.
On Tuesday morning, there were "very high water levels," Jeff Gilpin, spokesman for the Havre de Grace Police Department, said. As a result, police advised several residents on Water Street to self-relocate Oct. 30.
As of Tuesday evening, all waterfront parks remained closed and Gilpin said that for the most part, people were respecting barricades. "We’re very pleased with how our citizens are reacting to it," Gilpin said. "It makes our jobs easier."