Lake Tyler: 84.5% full as of 2023-09-30

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)
Most recent 2023-09-30 84.5 372.88 66,141 60,930 72,073 4,229
1 day prior 2023-09-29 84.7 372.90 66,226 61,015 72,073 4,232
2 days prior 2023-09-28 84.8 372.93 66,353 61,142 72,073 4,237
1 week prior 2023-09-23 84.5 372.87 66,099 60,888 72,073 4,227
1 month prior 2023-08-30 88.3 373.51 68,839 63,628 72,073 4,336
3 months prior 2023-06-30 99.9 375.36 77,189 71,978 72,073 4,709
6 months prior 2023-03-30 100.0 375.55 78,088 72,073 72,073 4,757
1 year prior 2022-09-30 83.8 372.75 65,593 60,382 72,073 4,207
*

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 2023-10-01 02:30 372.87 375.38 -2.51
1 hour prior 2023-10-01 01:30 372.87 375.38 -2.51
2 hours prior 2023-10-01 00:30 372.87 375.38 -2.51
6 hours prior 2023-09-30 20:30 372.85 375.38 -2.53
12 hours prior 2023-09-30 14:30 372.87 375.38 -2.51
24 hours prior 2023-09-30 02:30 372.90 375.38 -2.48
48 hours prior 2023-09-29 02:30 372.92 375.38 -2.46
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1967-01-01
Gauge USGS:08034000
Vertical datum NGVD29
Dead pool elevation 350.00 ft above NGVD29
Service spillway crest elevation 375.38 ft above NGVD29
Top of dam elevation 390.00 ft above NGVD29
Conservation pool elevation 375.38 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1967-01-01 (source: USGS)
1997-06-01 (source: TWDB) : GIS Data
2013-01-01 (source: TWDB) : GIS Data

Lake Location