From email from Reclamation (Kara Lamb):
This is an update to our fall operations of the Colorado-Big Thompson Project. Tonight, Thursday, October 27, we begin making some changes around the project for our annual maintenance program.
This evening, the pump to Carter Lake will be turned off.
Also tonight, we will begin increasing the releases from Olympus Dam to the Big Thompson Canyon. Changes will be made over a series of intervals beginning at 11 p.m. and ending around 2 a.m. Friday morning. The release below the dam will go from 54 cfs to about 313 cfs. It will stay around 313 cfs through the weekend.
Over the weekend, we will curtail the inflow to Horsetooth Reservoir slightly during some maintenance work. However, inflow to Horsetooth is scheduled to go back up on Monday afternoon, October 31. The reservoir elevation will continue slowly dropping through the weekend and begin rising again on Monday when inflow goes back up.
Water levels at Lake Estes are expected to fluctuate as is normal for this time of year.
More Colorado-Big Thompson coverage here.