Lrmwade's interactive graph and data of "South-West Iowa Landfill Tonnages" is a line chart, showing North Dallas Solid Waste LF/Metro Park West , South Dallas County LF Agency , South Central Iowa SLF , Clarke County SLF , Wayne-Ringgold-Decatur SLF , Union County SLF , Adair County SLF , Guthrie County Sanitary Landfill , Cass County SLF, Harrison County SLF , Montgomery County SLF , Page County SLF Assoc. , Fremont County SLF , Loess Hills Regional SLF , Audubon County SLF ; with 1994-2017 By Lauren Wade/IowaWatch. Data Source: Iowa DNR. in the x-axis and Tonnages in the y-axis.. The x-axis shows values from 1994 to 2017. The y-axis shows values from -13767.5505556 to 261583.460556.