The report provides hydrologic and water-quality data collected from (1) three agricultural drainage canals in Hyde County, (2) two agricultural drainage canals in Beaufort County, and (3) Campbell Creek, North Carolina. Descriptions of the study sites and data-collection procedures are followed by data tables and graphs. Hydrologic and water-quality data are presented for the period of October 1990 through May 1992 when the tide gates and flashboard risers were in operation. Hydrologic data include precipitation, water-level, and stream-velocity data recorded at 15-minute intervals. Water-quality data include physical properties measured in the field and nutrient and sediment concentrations measured biweekly and for selected storm events. Specific conductance and water temperature were measured at regular intervals for the agricultural basins and daily at Campbell Creek sites. Specific-conductance values at the Campbell Creek sites were converted to salinity values.