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 96.6% full as of 2016-09-26

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)
Today 2016-09-26 96.6 1,062.77 246,223 246,223 254,823 5,962
Yesterday 2016-09-25 96.6 1,062.74 246,044 246,044 254,823 5,960
2 days ago 2016-09-24 96.6 1,062.75 246,104 246,104 254,823 5,961
1 week ago 2016-09-19 97.2 1,063.01 247,656 247,656 254,823 5,980
1 month ago 2016-08-26 99.0 1,063.79 252,342 252,342 254,823 6,036
3 months ago 2016-06-26 100.0 1,064.55 256,951 254,823 254,823 6,092
6 months ago 2016-03-26 62.5 1,046.31 159,238 159,238 254,823 4,627
1 year ago 2015-09-26 67.0 1,048.74 170,724 170,724 254,823 4,817
*

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 2016-09-26 08:00 1,062.83 1,064.2 -1.4 below flood pool
1 hour prior 2016-09-26 07:00 1,062.81 1,064.2 -1.4 below flood pool
2 hours prior 2016-09-26 06:00 1,062.79 1,064.2 -1.4 below flood pool
6 hours prior 2016-09-26 02:00 1,062.78 1,064.2 -1.4 below flood pool
12 hours prior 2016-09-25 20:00 1,062.79 1,064.2 -1.4 below flood pool
24 hours prior 2016-09-25 08:00 1,062.70 1,064.2 -1.5 below flood pool
48 hours prior 2016-09-24 08:00 1,062.76 1,064.2 -1.4 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