Water resources activities of the U.S. Geological Survey (USGS) in Louisiana consist of collecting water resources data and conducting interpretive hydrologic investigations and research. The water resources data and the results of the interpretive investigations are published or released by either the USGS or by cooperating agencies. The USGS water resources activities in Louisiana for the 1985 fiscal year (October 1, 1984 to September 30, 1985) are described, including data collection and dissemination, water resources appraisals (interpretive studies) and research. (Lantz-PTT)