Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Waggoner Carr, regarding a legal question submitted for clarification: Whether the Highway Department may use its funds to reimburse the United States Department of the Interior, Geological Survey Division, for performance of research needed to obtain and analyze hydrologic data for use in the design of highway drainage structures when the Texas Water Commission is financially unable to perform such research.