Much of the site has been used previously for livestock grazing. Consequently, a number of tracts in the site are fenced. Currently there is fall livestock grazing on meadows in the west portion of the site. Some additional parts of the site have been planted in hay and/or grain, even though they lie within the high water lines of the marsh. Hill City Marsh is a nearly flat prairie basin in a high desert valley at the base of the Bennett Hills. Camas Creek forms a channel near the west end of the site, and wet meadows are dominated by Carex nebraskensis, Carex praegricilis, and Juncus balticus. Deschampsia cespitosa and Poa juncifolia are locally dominant. Willows occur irregularly on Camas Creek as they have been eliminated by grazing. Much of the prairie bordering the mid-section of the site has been converted to agriculture land. Downstream, the Camas Creek channel is barely discernible, and water flows over the entire prairie to create a shallow water marsh. The marsh is dominated by Juncus balticus and Eleocharis palustris with lesser amounts of Carex nebraskensis. Areas of slightly raised topography which drawdown early in the growing season have grasslands dominated by Distichlis spicata and Elymus cinereus and shrublands dominated by Artemisia cana. Vernal pools are also present with the annuals Psilocarphus brevissima, Naverretia breweri, and Polygonum polygaloides. Camas Creek once again forms a channel at the northeast end of the site. Uplands are dominated by Artemisia tridentata, Purshia tridentata, and Chrysothamnus nauseousus.
