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 is 100.0% full as of 2016-06-27

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.

Date Percent Full Mean Water Level
(ft)
Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Surface Area
(acres)
Most recent 2016-06-27 100.0 1,064.59 257,195 254,823 254,823 6,095
1 day prior 2016-06-26 100.0 1,064.55 256,951 254,823 254,823 6,092
2 days prior 2016-06-25 100.0 1,064.53 256,829 254,823 254,823 6,090
1 week prior 2016-06-20 100.0 1,064.64 257,500 254,823 254,823 6,098
1 month prior 2016-05-27 77.4 1,054.00 197,139 197,139 254,823 5,240
3 months prior 2016-03-27 62.5 1,046.30 159,192 159,192 254,823 4,626
6 months prior 2015-12-27 63.8 1,047.01 162,496 162,496 254,823 4,682
1 year prior 2015-06-27 71.0 1,050.83 180,956 180,956 254,823 4,972
*

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 2016-06-27 06:00 1,064.58 1,064.2 0.4 into flood pool
1 hour prior 2016-06-27 05:00 1,064.59 1,064.2 0.4 into flood pool
2 hours prior 2016-06-27 04:00 1,064.58 1,064.2 0.4 into flood pool
6 hours prior 2016-06-27 00:00 1,064.57 1,064.2 0.4 into flood pool
12 hours prior 2016-06-26 18:00 1,064.55 1,064.2 0.3 into flood pool
24 hours prior 2016-06-26 06:00 1,064.54 1,064.2 0.3 into flood pool
48 hours prior 2016-06-25 06:00 1,064.53 1,064.2 0.3 into 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