O. C. Fisher Lake: 9.4% full as of 2025-05-25

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 2025-05-25 9.4 1,870.69 10,901 10,900 115,742 967
Yesterday 2025-05-24 9.4 1,870.72 10,929 10,928 115,742 971
2 days ago 2025-05-23 9.5 1,870.76 10,967 10,966 115,742 975
1 week ago 2025-05-18 9.6 1,870.92 11,118 11,117 115,742 994
1 month ago 2025-04-25 9.9 1,871.21 11,411 11,410 115,742 1,017
3 months ago 2025-02-25 7.9 1,868.70 9,137 9,136 115,742 828
6 months ago 2024-11-25 8.8 1,869.97 10,222 10,221 115,742 887
1 year ago 2024-05-25 1.6 1,855.82 1,847 1,846 115,742 404
*

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 2025-05-25 17:00 1,870.69 1,908.00 -37.31 below flood pool
1 hour prior 2025-05-25 16:00 1,870.69 1,908.00 -37.31 below flood pool
2 hours prior 2025-05-25 15:00 1,870.70 1,908.00 -37.30 below flood pool
6 hours prior 2025-05-25 11:00 1,870.69 1,908.00 -37.31 below flood pool
12 hours prior 2025-05-25 05:00 1,870.69 1,908.00 -37.31 below flood pool
24 hours prior 2025-05-24 17:00 1,870.73 1,908.00 -37.27 below flood pool
48 hours prior 2025-05-23 17:00 1,870.78 1,908.00 -37.22 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1951-01-01
Vertical datum NGVD29
Dead pool elevation 1,840.00 ft above NGVD29
Emergency spillway crest elevation 1,938.50 ft above NGVD29
Flood pool elevation 1,938.50 ft above NGVD29
Maximum design elevation 1,958.00 ft above NGVD29
Top of dam elevation 1,964.00 ft above NGVD29
Conservation pool elevation 1,908.00 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1959-02-01 (source: TWDB)
1962-09-01 (source: USACE)
2003-08-01 (source: USACE)
Data Source USGS:08134500

Lake Location