sentences:  This ushered in a "boom" in potash mining, and several large potash producers set up business in the area.According to the U.S. Census Bureau, the county has a total area of , of which is land and (0.5%) is covered by water.The lowest point in the state of New Mexico is located on the Red Bluff Reservoir in Eddy County, where the impounded Pecos River flows out of New Mexico and into Texas.