Monticello Reservoir: 81.4% full as of 2022-07-01

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 2022-07-01 81.4 336.57 28,269 28,269 34,740 1,691
Yesterday 2022-06-30 81.4 336.58 28,286 28,286 34,740 1,692
2 days ago 2022-06-29 81.5 336.60 28,320 28,320 34,740 1,693
1 week ago 2022-06-24 82.3 336.75 28,582 28,582 34,740 1,707
1 month ago 2022-06-01 83.0 336.90 28,845 28,845 34,740 1,721
3 months ago 2022-04-01 81.2 336.53 28,199 28,199 34,740 1,687
6 months ago 2022-01-01 78.4 335.96 27,229 27,229 34,740 1,635
1 year ago 2021-07-01 85.2 337.33 29,611 29,611 34,740 1,759
*

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 2022-07-01 06:15 336.57 340.00 -3.43 below flood pool
1 hour prior 2022-07-01 05:15 336.57 340.00 -3.43 below flood pool
2 hours prior 2022-07-01 04:15 336.56 340.00 -3.44 below flood pool
6 hours prior 2022-07-01 00:15 336.57 340.00 -3.43 below flood pool
12 hours prior 2022-06-30 18:15 336.54 340.00 -3.46 below flood pool
24 hours prior 2022-06-30 06:15 336.59 340.00 -3.41 below flood pool
48 hours prior 2022-06-29 06:15 336.62 340.00 -3.38 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1973-01-01
Vertical datum NGVD29
Gauge USGS:07344488
Service spillway crest elevation 328.00 ft above NGVD29
Top of flood gate elevation 342.00 ft above NGVD29
Emergency spillway crest elevation 343.50 ft above NGVD29
Top of dam elevation 352.00 ft above NGVD29
Conservation pool elevation 340.00 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1998-02-01 (source: TWDB) : GIS Data

Lake Location