San Diego County will have enough water for 2019 in spite of low rainfall and high temperatures over the past year, the San Diego County Water Authority announced Monday. Rainfall during the 2018 water year, which ran from Oct. 1, 2017, to Sept. 30, totaled slightly more than three inches at San Diego International Airport, the county’s precipitation measurement site. SDCWA officials say that’s 67 percent lower than normal and the county’s second-lowest annual rainfall total since 1850.