What is the approximate width of the souris river floodplain?

700 km or 435 miles.

Explanation:

The Souris River is also called as the mouse river and is a river that is known to the U.S and is direct relation with that of the central and north America and is about 700 km long and it drains about 23,600 square miles. The river passes through the various communities of the Melita, the Hartney, Souris, and the Wawanesa and has a movement with the Assiniboine River located at the Treebank, about the 25 miles. And the main tributaries include the flows of the Souris in Manitoba is the Antler River system, and the Gainsborough and the Plum Creeks and have much of the drainage which is fertile and has a clay deposits form the glacial lakes.

Iam pretty sure it is c. 2000 bce

The correct answer is kettles.