Water-quality data from continuously monitored sites in the Albemarle Sound estuarine system, North Carolina, 1989-91

Water-quality measurements were made at 11 sites in or near North Carolina?s Albemarle Sound. Measurements taken at 15-minute intervals included near-surface and near-bottom specific conductance; near-surface water temperature; and near-surface, mid-depth, and near-bottom dissolved-oxygen concentrations.

Salinities generally ranged from less than 0.1 to about 32 parts per thousand during the period October 1989 through September 1991. Recorded water temperatures were between zero and 35 degrees Celsius during the measurement period. Dissolved-oxygen concentrations ranged from less than 1 milligram per liter to 19 milligrams per liter.

Daily mean values of specific conductance; salinity; water temperature; dissolved-oxygen concentrations; and dissolved oxygen, percent saturation, are presented in tables and graphs. Five-day mean values of water temperature and dissolved-oxygen concentrations for day and night conditions are also presented in tables.