After two years of sitting empty, Silver Lake’s namesake and signature icon is being refilled. City officials cranked open the tower valves to begin refilling the Silver Lake Reservoir complex on Tuesday, nearly a year ahead of schedule. The 96-acre reservoir is expected to be fully refilled by the middle of June. Officials previously said refilling would begin in May and take about one year. Now water is expected to reach the Silver Lake Reservoir’s historic level of 440 feet above sea level within two months.