Several watersheds in the Lake Houston area such as the San Jacinto River, Lake Houston and Garner’s Bayou exceeded their banks following recent Hurricane Harvey storms. All three watersheds received more than 30 inches of rain in recent days. The West Fork San Jacinto River, which is located near Hwy. 59, is routinely a source of flooding in the Lake Houston area because it sits at the base of 12 tributaries, said Jessica Beemer, north sector manager for the office of Houston City Council Member Dave Martin. The stretch of Hwy. 59 near the San Jacinto River has been impassible since Saturday night.