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: 51.6% full as of 2020-09-20

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 2020-09-20 51.6 1,039.80 131,485 131,485 254,823 3,822
Yesterday 2020-09-19 51.7 1,039.85 131,676 131,676 254,823 3,828
2 days ago 2020-09-18 51.8 1,039.94 132,021 132,021 254,823 3,839
1 week ago 2020-09-13 52.3 1,040.29 133,373 133,373 254,823 3,885
1 month ago 2020-08-20 55.9 1,042.52 142,484 142,484 254,823 4,220
3 months ago 2020-06-20 66.0 1,048.22 168,228 168,228 254,823 4,781
6 months ago 2020-03-20 73.6 1,052.15 187,584 187,584 254,823 5,078
1 year ago 2019-09-20 89.7 1,059.74 228,529 228,529 254,823 5,712
*

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 2020-09-20 15:00 1,039.75 1,064.20 -24.45 below flood pool
1 hour prior 2020-09-20 14:00 1,039.77 1,064.20 -24.43 below flood pool
2 hours prior 2020-09-20 13:00 1,039.78 1,064.20 -24.42 below flood pool
6 hours prior 2020-09-20 09:00 1,039.78 1,064.20 -24.42 below flood pool
12 hours prior 2020-09-20 03:00 1,039.80 1,064.20 -24.40 below flood pool
24 hours prior 2020-09-19 15:00 1,039.86 1,064.20 -24.34 below flood pool
48 hours prior 2020-09-18 15:00 1,039.93 1,064.20 -24.27 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