J. W. Trimble Lake Water Level Today
Arkansas · near Fort Smith · Near full pool
- Elevation
- 391.35 ft
- From full pool
- −0.65 ft
- Percent of pool
- 97.8%
- 24-hour change
- −0.12 ft
- 7-day change
- −0.21 ft
- Reading
- Sep 21, 2026 · USACE
Last year at J. W. Trimble Lake
J. W. Trimble Lake is 0.65 ft below full pool, at 391.35 ft, down 0.12 ft in the last 24 hours. That puts the lake at 97.8 percent of its conservation pool.
Over the last 7 days the level fell 0.21 ft, and over 30 days it fell 0.24 ft. In the 400 days of readings on this page the high was 391.92 ft on Feb 20, 2026 and the low was 389.14 ft on Jul 2, 2026, a range of 2.78 ft.
The reading is the U.S. Army Corps of Engineers gauge at J. W. Trimble Lock & Dam 13, near Fort Smith, taken Sep 21, 2026 and referenced to the NGVD29 datum. This page is rebuilt once a day from the agency feed; it is not a live gauge, so during a fast rise or a scheduled release check the USACE page for hourly values.
J. W. Trimble Lake pool elevations
| Current elevation | 391.35 ft |
|---|---|
| Full pool (top of conservation) | 392.00 ft |
| Bottom of conservation pool | 363.00 ft |
| Top of dam | 393.00 ft |
| Inflow | 0 cfs |
| Outflow | 0 cfs |
| 30-day change | −0.24 ft |
| 1-year high | 391.92 ft (Feb 20, 2026) |
| 1-year low | 389.14 ft (Jul 2, 2026) |
| Vertical datum | NGVD29 |
| Operating agency | U.S. Army Corps of Engineers, SWL district |
Source: U.S. Army Corps of Engineers. Read what full pool and flood pool mean.
More lakes in Arkansas
- Bull Shoals Lake 655.26 ft, −5.74 ft from full
- Beaver Lake 1,113.71 ft, −7.72 ft from full
- Greers Ferry Lake 456.78 ft, −5.76 ft from full
- Norfork Lake 553.38 ft, −2.37 ft from full
- Lake Ouachita 570.96 ft, −7.04 ft from full
- DeGray Lake 401.69 ft, −6.31 ft from full
J. W. Trimble Lake level questions
What is the water level of J. W. Trimble Lake today?
J. W. Trimble Lake is at 391.35 ft as of Sep 21, 2026, −0.65 ft relative to full pool (392.00 ft). The 24-hour change is −0.12 ft.
What is full pool at J. W. Trimble Lake?
Full pool, the top of the conservation pool, is 392.00 ft (NGVD29). The bottom of the conservation pool is 363.00 ft.
Is J. W. Trimble Lake rising or falling?
Over the last 24 hours the level is −0.12 ft; over 7 days it fell 0.21 ft, and over 30 days it fell 0.24 ft.
Where does this J. W. Trimble Lake level come from?
From the U.S. Army Corps of Engineers (USACE) public data feed for J. W. Trimble Lock & Dam 13. Lake Levels Today republishes the agency's daily value without adjustment and links to the source below.