Bridgeport Reservoir: 85.3% full as of 2026-03-10

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)
Most recent 2026-03-10 85.3 831.34 317,458 317,458 372,183 11,240
1 day prior 2026-03-09 85.2 831.32 317,234 317,234 372,183 11,236
2 days prior 2026-03-08 85.2 831.32 317,234 317,234 372,183 11,236
1 week prior 2026-03-03 84.9 831.22 316,111 316,111 372,183 11,215
1 month prior 2026-02-10 84.9 831.21 315,999 315,999 372,183 11,213
3 months prior 2025-12-10 86.1 831.62 320,613 320,613 372,183 11,296
6 months prior 2025-09-10 92.2 833.57 343,021 343,021 372,183 11,695
1 year prior 2025-03-10 72.6 826.96 270,351 270,351 372,183 10,214
*

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 2026-03-10 23:00 831.54 836.00 -4.46 below flood pool
1 hour prior 2026-03-10 22:00 831.38 836.00 -4.62 below flood pool
2 hours prior 2026-03-10 21:00 831.28 836.00 -4.72 below flood pool
6 hours prior 2026-03-10 17:00 831.33 836.00 -4.67 below flood pool
12 hours prior 2026-03-10 11:00 831.33 836.00 -4.67 below flood pool
24 hours prior 2026-03-09 23:00 831.33 836.00 -4.67 below flood pool
48 hours prior 2026-03-08 23:00 831.30 836.00 -4.70 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1931-01-01
Vertical datum
Start date: 2016-11-10 		NAVD88
Vertical datum
End date: 2016-11-09 		NGVD29
Dead pool elevation
Start date: 1971-02-01 		752.00 ft above NAVD88
Dead pool elevation
End date: 1971-02-01 		751.40 ft above NGVD29
Service spillway crest elevation 819.52 ft above NAVD88
Top of flood gate elevation 841.52 ft above NAVD88
Emergency spillway crest elevation 866.00 ft above NAVD88
Flood pool elevation 851.00 ft above NAVD88
Maximum design elevation 871.22 ft above NAVD88
Top of dam elevation 874.00 ft above NAVD88
Conservation pool elevation
Start date: 1971-02-01 		836.00 ft above NAVD88
Conservation pool elevation
End date: 1969-02-01 		836.00 ft above NGVD29
Conservation pool elevation
Start date to end date: 1969-02-01 to 1971-02-01 		840.00 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1931-01-01 (source: USGS)
2000-04-01 (source: TWDB) : GIS Data
2010-12-01 (source: TWDB) : GIS Data
2020-10-01 (source: TWDB) : GIS Data
Data Source USGS:08043000

Lake Location