DES MOINES, Iowa (AP) — The Missouri River in Iowa is open for boaters again. Boats have been off-limits all summer because of flooding. The Iowa Department of Natural Resources says Monday that the Missouri River as well as the Big Sioux River in northwest Iowa are now open. The agency says with fall fishing picking up and the second duck season a few weeks ago, the rivers could get busy. Officials are urging boaters to be careful because the river level is still high, and there are many obstacles under the surface, including logs and sandbars. Most of the public access areas on the Missouri River remain closed, but the DNR is working to clean and inspect the boat ramps and parking lots, which will reopen as conditions allow.