Imperial Valley League was an Independent and a Winter League that was based in California.
1907 Calexico, El Centro, Holtsville, Imperial
1908 Brawley enter the League
1909 Yuma (AZ) enter the League
1910 to 1912 Not sure if this League played
1913 Calexico, Holtsville, Imperial
1914 Brawley and El Centro enter the league and Holtsville left the league.
1915 No teams enter or left the league.