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: 92.3% full as of 2017-02-21

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, while 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 2017-02-21 92.3 1,060.90 235,214 235,214 254,823 5,811
Yesterday 2017-02-20 92.2 1,060.87 235,040 235,040 254,823 5,808
2 days ago 2017-02-19 92.0 1,060.78 234,518 234,518 254,823 5,801
1 week ago 2017-02-14 91.9 1,060.74 234,286 234,286 254,823 5,798
1 month ago 2017-01-21 92.4 1,060.92 235,331 235,331 254,823 5,812
3 months ago 2016-11-21 92.5 1,060.98 235,680 235,680 254,823 5,817
6 months ago 2016-08-21 98.9 1,063.75 252,101 252,101 254,823 6,033
1 year ago 2016-02-21 63.0 1,046.58 160,490 160,490 254,823 4,647
*

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 2017-02-21 19:00 1,060.90 1,064.2 -3.3 below flood pool
1 hour prior 2017-02-21 18:00 1,060.90 1,064.2 -3.3 below flood pool
2 hours prior 2017-02-21 17:00 1,060.90 1,064.2 -3.3 below flood pool
6 hours prior 2017-02-21 13:00 1,060.91 1,064.2 -3.3 below flood pool
12 hours prior 2017-02-21 07:00 1,060.90 1,064.2 -3.3 below flood pool
24 hours prior 2017-02-20 19:00 1,060.88 1,064.2 -3.3 below flood pool
48 hours prior 2017-02-19 19:00 1,060.77 1,064.2 -3.4 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 912.2 ft above NGVD29
Conservation pool elevation 1064.2 ft above NGVD29
Emergency spillway crest elevation 1064.5 ft above NGVD29
Emergency spillway crest elevation 1072.3 ft above NGVD29
Top of dam elevation 1076.2 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