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Releases from Tri-Lakes Dams ramping down

Published July 1, 2015
Chatfield Dam was the second of three dams built to reduce flooding risks in the Denver area. Located southwest of Denver on the South Platte River, construction of the dam was begun in 1967 and was completed in 1975. The dam measures approximately 13,136 feet in length with a maximum height of 147 feet from the streambed to the top of the dam.

Chatfield Dam was the second of three dams built to reduce flooding risks in the Denver area. Located southwest of Denver on the South Platte River, construction of the dam was begun in 1967 and was completed in 1975. The dam measures approximately 13,136 feet in length with a maximum height of 147 feet from the streambed to the top of the dam.

Chatfield Dam was the second of three dams built to reduce flooding risks in the Denver area. Located southwest of Denver on the South Platte River, construction of the dam was begun in 1967 and was completed in 1975.

Chatfield Dam was the second of three dams built to reduce flooding risks in the Denver area. Located southwest of Denver on the South Platte River, construction of the dam was begun in 1967 and was completed in 1975.

A round of storms Sept. 14, 2013, impacted the Cherry Creek basin causing pool elevations at Cherry Creek reservoir to enter the flood control pool. Cherry Creek peaked at a pool elevation of 5553.4 ft on Sept. 25, more than 12 feet below the record pool of 5565.8 feet in 1973. Major transportation routes and a large population, which makes up the Denver metropolitan area are located downstream from Cherry Creek Dam.

A round of storms Sept. 14, 2013, impacted the Cherry Creek basin causing pool elevations at Cherry Creek reservoir to enter the flood control pool. Cherry Creek peaked at a pool elevation of 5553.4 ft on Sept. 25, more than 12 feet below the record pool of 5565.8 feet in 1973. Major transportation routes and a large population, which makes up the Denver metropolitan area are located downstream from Cherry Creek Dam.

Bear Creek Dam is located on the southwest edge of suburban Lakewood at the confluence of Bear Creek and Turkey Creek, construction of the dam was authorized in 1968 and was completed in 1982. Bear Creek Lake is less than 1 mile long and has an average depth of 48 feet. The lake drains an area of approximately 236 square miles.

Bear Creek Dam is located on the southwest edge of suburban Lakewood at the confluence of Bear Creek and Turkey Creek, construction of the dam was authorized in 1968 and was completed in 1982. Bear Creek Lake is less than 1 mile long and has an average depth of 48 feet. The lake drains an area of approximately 236 square miles.

OMAHA, NE - Releases for all three Tri-Lakes Dams will start ramping down this week as the flood pools continue to be evacuated. Chatfield Dam reduced releases on June 30 from 3,000 to 2,500 cubic feet per second, and on July 1 Cherry Creek Dam will drop releases from 250 cfs to 50 cfs.  On July 2, Chatfield Dam will further reduce releases to 1,800 cfs and Bear Creek Dam releases will be reduced from 350 to 225 cfs.  Releases will hold steady through the holiday weekend.

Releases will continue to be ramped down at Chatfield Dam and Bear Creek Dam until the flood control pools are evacuated in mid-July. Cherry Creek Dam’s flood control pool will be evacuated by July 6. Once the flood control pools are evacuated, the dams’ release rates will be determined in conjunction with the State of Colorado.

The U.S. Army Corps of Engineers routinely conducts inspections and monitors all three projects as a part of its Dam Safety Program. All three projects are performing as designed. USACE continues to monitor reservoir conditions and river flows downstream of the dams in coordination with the State of Colorado.

 

 

7/1
Pool Level

7/1
% Flood Pool

Flood Pool
Evacuation Date

7/1
Inflow

7/1
Release

Bear Creek

5579.3 ft

11.3

Mid-July

150 cfs

350 cfs

Cherry Creek

5551.1 ft

1.2

July 6

30 cfs

50 cfs

Chatfield

5442.8 ft

8.8

Mid-July

1750 cfs

2,500 cfs


Contact
Kathryn Seefus
kathryn.j.seefus@usace.army.mil
or
Eileen Williamson
402-995-2417
eileen.l.williamson@usace.army.mil

Release no. 20150701