Officers of the American Institute of Hydrology (AIH) and the Association of Ground Water Scientists (ACGWP) met December 13, 1988, in Las Vegas to explore possible cooperation between the two organizations that certify hydrologists and groundwater professionals. John Moore and Joseph Rosenshein, both of Reston, Va., and Richard Hawkins of Tucson, Ariz., represented AIH; Doug Kent of Menlo Park, Calif., Jim Gibb and Don Jorgenson of Lawrence, Kan., and Jim Quinlin of Mammoth Cave, Ky., represented ACGWP. All except Gibb are members of the AGU Hydrology Section. The group reviewed the organizational structure, history, certification standards, and future plans for each organization. The two organizations agreed to work together on jointly sponsored technical meetings, jointly sponsored workshops in certification for the Environmental Protection Agency and state agencies, and establishment of a National Steering Committee to meet twice a year. From John Moore, U.S. Geological Survey, Reston, Va.