Recent changes

2013-06-19: The vertical datum for the 1995 TWDB rating curve for Lake Medina has been adjusted from NGVD29-7.81ft to NGVD29-7.80ft.

Medina Lake: 34.4% full as of 2021-07-30

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)
Today 2021-07-30 34.4 1,026.24 87,732 87,732 254,823 2,783
Yesterday 2021-07-29 34.5 1,026.30 87,899 87,899 254,823 2,786
2 days ago 2021-07-28 34.5 1,026.35 88,038 88,038 254,823 2,789
1 week ago 2021-07-23 34.7 1,026.52 88,513 88,513 254,823 2,798
1 month ago 2021-06-30 34.0 1,025.86 86,678 86,678 254,823 2,764
3 months ago 2021-04-30 33.4 1,025.25 85,002 85,002 254,823 2,732
6 months ago 2021-01-30 40.3 1,031.35 102,665 102,665 254,823 3,072
1 year ago 2020-07-30 59.1 1,044.41 150,649 150,649 254,823 4,421
*

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 2021-07-30 17:00 1,026.24 1,064.20 -37.96 below flood pool
1 hour prior 2021-07-30 16:00 1,026.24 1,064.20 -37.96 below flood pool
2 hours prior 2021-07-30 15:00 1,026.25 1,064.20 -37.95 below flood pool
6 hours prior 2021-07-30 11:00 1,026.26 1,064.20 -37.94 below flood pool
12 hours prior 2021-07-30 05:00 1,026.23 1,064.20 -37.97 below flood pool
24 hours prior 2021-07-29 17:00 1,026.31 1,064.20 -37.89 below flood pool
48 hours prior 2021-07-28 17:00 1,026.35 1,064.20 -37.85 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1913-01-01
Vertical datum NGVD29
Gauge USGS:08179500
Dead pool elevation 912.20 ft above NGVD29
Emergency spillway crest elevation 1,064.50 ft above NGVD29
Emergency spillway crest elevation 1,072.30 ft above NGVD29
Top of dam elevation 1,076.20 ft above NGVD29
Conservation pool elevation 1,064.20 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1913-01-01 (source: usgs)
1995-07-01 (source: twdb) : GIS Data

Lake Location