The 2016-17 rainfall season is the ninth wettest on record for Sacramento – and more precipitation is on the way Friday. Nearly 30 inches of rainfall has fallen in Sacramento, 29.93 inches to be exact. Northern California rainfall has swollen rivers, filled reservoirs and ended drought conditions. “The main reason it’s been so wet is that we’ve had double the atmospheric river events that we typically see in a water year,” said Brooke Bingaman, meteorologist with the National Weather Service in Sacramento.