lowgrounds

To the creek as well as the rapid we gave the name of Frazier, after Robert* Frazier one of the party: here the country opens into a beautiful valley from six to eight miles in width: the river then becomes crooked and crowded with islands; its lowgrounds wide and fertile, but though covered with fine grass from nine inches to two feet high; possesses but a small proportion of timber, and that consists almost entirely of a few narrow-leafed cottonwood distributed along the verge of the river.

History of the Expedition under the Command of Captains Lewis and Clark, Vol. I. To the Sources of the Missouri, Thence Across the Rocky Mountains and Down the River Columbia to the Pacific Ocean. Performed During the Years 1804-5-6. William Clark 1804