From the Summit County Citizens Voice (Bob Berwyn):
The current elevation of the reservoir (9,002.53) feet, is 15 feet below full and about 10 feet below the average elevation for this date, which is about 9,012 feet Most recently, the reservoir dropped to near the current levelsin spring of 2009, when it hit as at 9,006.72 just before the start of the runoff season in mid-March. The current level may seem low, but the water dropped more than 40 feet lower in 2003 during Colorado’s last significant drought, reaching its lowest point on March 18, 2003, at 8,960.86 feet.
The reservoir will continue to drop the next few months, said Bob Steger, Denver Water’s manager of raw water supply, explaining that the combined current outflow through the Roberts Tunnel and the Blue River far exceeds the inflow of the streams that feed the reservoir.
As of Aug. 28, Denver was was diverting about 380 cubic feet per second through the tunnel, with about 53 cfs flowing downstream into the Lower Blue, with the combined inflow from the Snake, Blue Tenmile and other minor tributaries combining for an inflow of about 145 cfs for the month of August. The average August inflow is about 270 cfs, Steger said. At this rate, the reservoir will drop about 12 feet by the end of October. If the weather turns very dry, it could drop another 10 feet; if late summer and fall are wet, the level could be a little higher going into the cold season.