Gainesville is considering supporting Hall County’s planned Glades Reservoir if it won’t raise water rates for the city’s water customers. Gainesville City Council is expected to take up a joint agreement with the county at its meeting tonight that’s similar to the agreement the council tabled last month. Glades Reservoir, which is estimated to cost $130 million, is planned as an 850-acre reservoir in the Upper Chattahoochee River Basin of North Hall that could provide 30 million to 40 million gallons of water per day to Northeast Georgia residents.