JOHNSON CREEK The shallow pond has been filled with sediment and evolved into a riparian/wetland habitat. Riparian/wetland plants include Nebraska sedge, Baltic rush and slender potentilla. The far end of the pond is more mesic and is populated with timothy, foxtail grass, thickspike wheatgrass, iris and yarrow. Adjacent uplands support gambel oak, currant, snowberry, and lupine. A significant increase in conifer densities on the far east facing slope has occurred in the 83 years between photographs.