Of the 5 Wyoming lakes here with a published full pool, 5 sit below it. One more has no full-pool figure and reads against its own record instead. The newest reading on this page is from September 24, 2026.
| Lake | Level now | Full pool | Against full pool | Reading |
|---|---|---|---|---|
| Jackson Lake Bureau of Reclamation | 6734.37 ft | 6769.00 ft | 34.6 ft below full pool — this gauge's public record is too short for seasonal comparisons | September 20, 2026 |
| Big Sandy Reservoir Bureau of Reclamation (Big Sandy Dam) | 6733.66 ft | not published | Reading is typical for late September. | September 23, 2026 |
| Boysen Reservoir US Bureau of Reclamation (Boysen Dam) | 4709.99 ft | 4725.00 ft | 15.0 ft below full pool — on the low side for late September | September 24, 2026 |
| Buffalo Bill Reservoir Bureau of Reclamation | 5366.50 ft | 5393.50 ft | 27.0 ft below full pool — typical for late September | September 22, 2026 |
| Glendo Reservoir US Bureau of Reclamation (Glendo Dam) | 4592.06 ft | 4635.00 ft | 42.9 ft below full pool — typical for late September | September 24, 2026 |
| Keyhole Reservoir US Bureau of Reclamation (Keyhole Dam) | 4084.00 ft | 4099.30 ft | 15.3 ft below full pool — on the low side for late September | September 24, 2026 |
“Full pool” means the conservation pool — what that is, and what it is not. Lakes with no published figure are read against their own seasonal record instead.
Wyoming lake levels, asked and answered
What are the lake levels in Wyoming today?
Of the 5 Wyoming lakes here with a published full pool, 5 sit below it. One more has no full-pool figure and reads against its own record instead. The newest reading on this page is from September 24, 2026.
Which Wyoming lake is furthest below full pool?
Glendo Reservoir is the furthest down of the Wyoming lakes on this page, at 42.9 ft below its full pool.
Where do these Wyoming lake levels come from?
Each row is the gauge the agency that runs the lake publishes — the Corps of Engineers, the Bureau of Reclamation, the state water agency or the US Geological Survey, depending on the lake. Open a lake and its own page re-reads that gauge as the page loads, wherever the agency lets a browser do it.