Lake Cypress Springs: 100.0% full as of 2023-03-22

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, and (2) 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 2023-03-22 100.0 378.23 67,501 66,756 66,756 - n.a. -
Yesterday 2023-03-21 100.0 378.22 67,469 66,756 66,756 - n.a. -
2 days ago 2023-03-20 100.0 378.24 67,534 66,756 66,756 - n.a. -
1 week ago 2023-03-15 100.0 378.32 67,794 66,756 66,756 - n.a. -
1 month ago 2023-02-22 100.0 378.64 68,840 66,756 66,756 - n.a. -
3 months ago 2022-12-22 97.7 377.53 65,244 65,244 66,756 3,198
6 months ago 2022-09-22 89.6 375.79 59,785 59,785 66,756 3,080
1 year ago 2022-03-22 89.0 375.67 59,416 59,416 66,756 3,072
*

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 2023-03-22 16:15 378.23 378.00 0.23
1 hour prior 2023-03-22 15:15 378.23 378.00 0.23
2 hours prior 2023-03-22 14:15 378.24 378.00 0.24
6 hours prior 2023-03-22 10:15 378.21 378.00 0.21
12 hours prior 2023-03-22 04:15 378.22 378.00 0.22
24 hours prior 2023-03-21 16:15 378.23 378.00 0.23
48 hours prior 2023-03-20 16:15 378.24 378.00 0.24
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1971-01-01
Gauge USGS:07344484
Vertical datum NGVD29
Dead pool elevation 317.75 ft above NGVD29
Service spillway crest elevation 378.00 ft above NGVD29
Emergency spillway crest elevation 385.00 ft above NGVD29
Top of dam elevation 395.00 ft above NGVD29
Conservation pool elevation 378.00 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

2007-07-01 (source: TWDB) : GIS Data

Lake Location