Appendix D "Riverside County, Salton Sea" Table D-53 Parameter 1980 1985 1990 1995 2000 2005 2010 2015 2020 Population 137577 171797 244077 285963 326315 397518 453165 506589 560013 Avg. Daily VMT/1000 2943 4365 7484 8983 7302 7952 8691 9441 10416