Flooding is the deadliest natural disaster facing Oklahomans, a threat far greater than tornadoes. In the United States, flooding kills an average of 103 people a year. Tornadoes, however, caused 48 deaths on average during the same period, according to the National Weather Service.

Both swift water rescue teams deployed Saturday to aid in ongoing search and rescue efforts and recovery operations. The members of the Oklahoma emergency management department deployed Sunday to work at the Texas State Operations Center to assist in coordinating additional resources from the Federal Emergency Management Agency.

Flash floods last week in Texas caused the Guadalupe River to rise dramatically, reaching three stories high in just two hours

Oklahoma volunteers bring hope to Texas flood victims