Lake Fork Reservoir: 82.3% full as of 2026-09-19
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 | 2026-09-19 | 82.3 | 398.72 | 530,455 | 499,012 | 606,088 | 23,500 |
| Yesterday | 2026-09-18 | 82.4 | 398.75 | 531,160 | 499,717 | 606,088 | 23,515 |
| 2 days ago | 2026-09-17 | 82.5 | 398.77 | 531,630 | 500,187 | 606,088 | 23,525 |
| 1 week ago | 2026-09-12 | 83.0 | 398.90 | 534,692 | 503,249 | 606,088 | 23,590 |
| 1 month ago | 2026-08-19 | 85.5 | 399.52 | 549,416 | 517,973 | 606,088 | 23,907 |
| 3 months ago | 2026-06-19 | 92.4 | 401.24 | 591,614 | 560,171 | 606,088 | 25,290 |
| 6 months ago | 2026-03-19 | 87.9 | 400.13 | 564,101 | 532,658 | 606,088 | 24,282 |
| 1 year ago | 2025-09-19 | 95.0 | 401.85 | 607,210 | 575,767 | 606,088 | 25,844 |
*
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 | 2026-09-19 12:30 | 398.71 | 403.00 | -4.29 |
| 1 hour prior | 2026-09-19 11:30 | 398.71 | 403.00 | -4.29 |
| 2 hours prior | 2026-09-19 10:30 | 398.71 | 403.00 | -4.29 |
| 6 hours prior | 2026-09-19 06:30 | 398.72 | 403.00 | -4.28 |
| 12 hours prior | 2026-09-19 00:30 | 398.72 | 403.00 | -4.28 |
| 24 hours prior | 2026-09-18 12:30 | 398.75 | 403.00 | -4.25 |
| 48 hours prior | 2026-09-17 12:30 | 398.77 | 403.00 | -4.23 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1980-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 360.00 ft above NGVD29 |
| Top of gate elevation | 405.00 ft above NGVD29 |
| Emergency spillway crest elevation | 385.00 ft above NGVD29 |
| Maximum design elevation | 407.90 ft above NGVD29 |
| Top of dam elevation | 419.50 ft above NGVD29 |
| Conservation pool elevation | 403.00 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
1980-02-01 (source: USGS)
2001-03-01 (source: TWDB)
: GIS Data
2009-10-01 (source: TWDB)
: GIS Data
|
|
| Data Source | USGS:08018800 |
| USGS Monitoring Location | USGS:08018800 |
Lake Location
