From this thread:
" Big T flows
I do understand your request for the Big Thompson to have higher flows this year. Unfortunately, it just did not play out that way.
This year, inflows to Lake Estes from the Big Thompson River have been dropping for the past couple of weeks. We have been sending those inflows on through Olympus Dam and down the canyon. We just didn't see a big peak in run off flows this year like we did a couple years ago. We also do not have any scheduled work on the Colorado-Big Thompson project. When we do have scheduled maintenance, we use the Big T river to run C-BT project water imported from the Colorado River on down to Horsetooth Reservoir. But, again, not this year.
The State of Colorado via the Colorado Water Conservation Board does have a minimum instream flow below Olympus Dam on the Big T. For this time of year, it is at 125 cfs. Our gage is showing about 127 cfs in the river, up there.
In the middle of August, the minimum instream flow changes and drops down to 100 cfs. So, not the news you were hoping for, I know. Hopefully, next year, there will be more east slope run off. And, if we do have some scheduled maintenance on the project next summer, I'll be sure to post that info here so you know.
Eastern Colorado Office
Bureau of Reclamation
(970) 962-4326 "