BOULDER, Colo. — Starting Sept. 1 and lasting until March 2021, crews will drain Boulder Reservoir and limit access to perform required maintenance work that usually happens every five to 10 years.

The city of Boulder is not currently using the reservoir as a source of drinking water, but the Northern Colorado Water District is. That agency has been advised of the situation.

The Boulder Reservoir swim area is closed at least until noon Wednesday because of high levels of bacteria found in the water. Wildlife activity may be the reason for the elevated bacteria levels ...

The Boulder Reservoir swim area will be closed until at least noon Friday because of elevated bacteria levels. Increased bacteria levels can be attributed to wild animals in the area. The area will… ...