Twin Buttes Reservoir: 10.7% full as of 2017-07-21

The elevation-storage rating curve used to produce the storage hydrograph is made of two segments: (1) the segment up to the conservation pool top (below the red line) is based on measured data, while the segment in the flood pool (above the red line) is an extrapolation from the first segment and shouldn't be relied upon for flood storage information.

Historical Data

Date Percent Full Mean Water Level
(ft)
Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Surface Area
(acres)
Today 2017-07-21 10.7 1,903.34 23,235 19,486 182,454 1,596
Yesterday 2017-07-20 10.7 1,903.39 23,315 19,566 182,454 1,599
2 days ago 2017-07-19 10.8 1,903.45 23,410 19,661 182,454 1,603
1 week ago 2017-07-14 11.0 1,903.74 23,872 20,123 182,454 1,624
1 month ago 2017-06-21 11.8 1,904.56 25,224 21,475 182,454 1,683
3 months ago 2017-04-21 14.1 1,906.96 29,522 25,773 182,454 1,933
6 months ago 2017-01-21 12.5 1,905.31 26,509 22,760 182,454 1,749
1 year ago 2016-07-21 10.1 1,902.64 22,146 18,397 182,454 1,545
*

Percent Full is based on Conservation Storage and Conservation Capacity and doesn't account for storage in flood pool.

**

   Values above, including today's are averaged conditions. For near real-time instantaneous water level, see table below or the interactive map viewer.

Most Recent Instantaneous Water Level

Date/time Water Level
(ft)
Conservation Pool Elevation
(ft)
Height Above Conservation Pool
(ft)
Most recent 2017-07-21 23:00 1,903.30 1,940.2 -36.9 below flood pool
1 hour prior 2017-07-21 22:00 1,903.30 1,940.2 -36.9 below flood pool
2 hours prior 2017-07-21 21:00 1,903.31 1,940.2 -36.9 below flood pool
6 hours prior 2017-07-21 17:00 1,903.32 1,940.2 -36.9 below flood pool
12 hours prior 2017-07-21 11:00 1,903.34 1,940.2 -36.9 below flood pool
24 hours prior 2017-07-20 23:00 1,903.36 1,940.2 -36.8 below flood pool
48 hours prior 2017-07-19 23:00 1,903.41 1,940.2 -36.8 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1963-01-01
Vertical datum NGVD29
Gauge USGS:08131200
Dead pool elevation 1885.0 ft above NGVD29
Conservation pool elevation 1940.2 ft above NGVD29
Emergency spillway crest elevation 1969.1 ft above NGVD29
Maximum design elevation 1985 ft above NGVD29
Top of dam elevation 1991 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1964-01-01 (source: usbr)

Lake Location