- Lake Red Rock USACE Rock Island District744.57 ft 2.6 ft above full pool — typical for mid-August as of August 15, 2026
- Rathbun Lake USACE Kansas City District905.73 ft 1.7 ft above full pool — typical for mid-August as of August 14, 2026
- Saylorville Lake USACE Rock Island District837.62 ft 1.6 ft above full pool — on the high side for mid-August as of August 15, 2026
- West Okoboji Lake Iowa DNR (natural lake, ungated outlet)4.16 ft Reading is typical for mid-August. as of August 14, 2026
- Coralville Lake USACE Rock Island District683.23 ft 0.2 ft above full pool — unusually low for mid-August as of August 15, 2026