This edition is one of a series of annual reports by the Water Resources Division of the U.S. Geological Survey on groundwater in Texas. This report contains water level records for 845 observation wells and water quality records for 187 monitoring wells. Each well is catalogued according to the county in which it resides. Included is an explanation of the latitude-longitude system used in identifying the wells, and an explanation of the data collection and computation methods for both water level and water quality records. This information is intended for use in developing and managing land and water resources within the state.