Of the 4 Iowa lakes here with a published full pool, 4 are at or above full pool. 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 |
|---|---|---|---|---|
| Lake Red Rock USACE Rock Island District | 745.95 ft | 742.00 ft | 4.0 ft above full pool — on the high side for late September | September 24, 2026 |
| Rathbun Lake USACE Kansas City District | 905.91 ft | 904.00 ft | 1.9 ft above full pool — typical for late September | September 24, 2026 |
| Saylorville Lake USACE Rock Island District | 837.27 ft | 836.00 ft | 1.3 ft above full pool — typical for late September | September 24, 2026 |
| West Okoboji Lake Iowa DNR (natural lake, ungated outlet) | 4.21 ft | not published | Reading is typical for late September. | September 24, 2026 |
| Coralville Lake USACE Rock Island District | 686.06 ft | 683.00 ft | 3.1 ft above full pool — on the high 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.
Iowa lake levels, asked and answered
What are the lake levels in Iowa today?
Of the 4 Iowa lakes here with a published full pool, 4 are at or above full pool. 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.
Where do these Iowa 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.