National Natural Landmarks

Willamette Floodplain

Willamette Floodplain
Willamette Floodplain

Willamette Floodplain represents the largest remaining native unplowed example of bottomland interior valley grassland in the North Pacific Border biophysiographic province. All of these grassland and shrubland communities have become exceedingly rare as most have been cultivated or converted to pastureland.

Location: Benton County, OR ; Benton County, OR

Year designated: 1987

Acres: 713

Ownership: Federal




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