Monticello Reservoir: 79.8% full as of 2021-09-23

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 2021-09-23 79.8 336.26 27,736 27,736 34,740 1,663
Yesterday 2021-09-22 79.8 336.25 27,719 27,719 34,740 1,662
2 days ago 2021-09-21 80.0 336.30 27,804 27,804 34,740 1,666
1 week ago 2021-09-16 80.4 336.38 27,941 27,941 34,740 1,673
1 month ago 2021-08-23 83.1 336.91 28,862 28,862 34,740 1,721
3 months ago 2021-06-23 86.0 337.48 29,882 29,882 34,740 1,773
6 months ago 2021-03-23 86.1 337.50 29,918 29,918 34,740 1,775
1 year ago 2020-09-23 83.1 336.92 28,880 28,880 34,740 1,722
*

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 2021-09-23 19:15 336.25 340.00 -3.75 below flood pool
1 hour prior 2021-09-23 18:15 336.25 340.00 -3.75 below flood pool
2 hours prior 2021-09-23 17:15 336.25 340.00 -3.75 below flood pool
6 hours prior 2021-09-23 13:15 336.26 340.00 -3.74 below flood pool
12 hours prior 2021-09-23 07:15 336.27 340.00 -3.73 below flood pool
24 hours prior 2021-09-22 19:15 336.24 340.00 -3.76 below flood pool
48 hours prior 2021-09-21 19:15 336.26 340.00 -3.74 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