Pawnee Creek is one of the few creeks within the grassland. April 28, 2014 by Matt ThomasPawnee Creek is one of the few creeks within the grassland. Pawnee National Grassland About Matt Thomas Matt is an avid writer and explorer, who loves to showcase his home state of Colorado. His favorite place to be is right here in the Centennial State. Previous Post:Pawnee National Grassland – by Greeley