Appendix D "Riverside County, Salton Sea" Table D-53 Parameter 1980 1985 1990 1995 2000 2005 2010 2015 2020 Population 137577 171797 244070 285964 326308 402318 468634 538309.5 607985 Avg. Daily VMT/1000 3361 4852 8255 9581 8089 11205 11576 13325 14743