State and federal officials and agencies participating in the Kansas and Missouri flood emergency plan of operation in July, 1951, are described. Federal assistance was provided in the form of specified professional personnel, vehicles, equipment, and other supplies. Most of the resources of the Regional Office of the Public Health Service, Missouri Drainage Basin Office, and Office of Midwestern CDC Services were dispatched to the two states, and more personnel, equipment, and supplies were brought into the flood area from other PHS field stations and offices to meet additional emergency requests made to the Regional Office. As a result of the support, the flood did not become a health catastrophe. Personnel assignments and costs are detailed.