For the first time in a half-dozen years, water flowed over Canyon Lake’s dam in the last few days, rushing downstream into Lake Elsinore. “Watching the water come over the dam on Christmas Day and flow into the lake was quite the Christmas miracle for us,” Mayor Bob Magee said. Observers hope the influx — coupled with more potential storms such as one forecast for later this week — will rescue Southern California’s largest natural freshwater body from a severe decline brought on by the region’s prolonged drought.