Water-quality data from continuously monitored
sites in the Pamlico and Neuse River estuaries, North Carolina,
1990-91
Open-File Report 92-110
By R.G. Garrett
Abstract
Water quality measurements were made at six sites in or near
North Carolina's Pamlico River estuary and at five sites in or
near the Neuse River estuary. 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. In
the Pamlico River estuary, salinities generally ranged from near
zero to about 20 parts per thousand during the period April 1989 through
September 1991; however, unnaturally high salinities (up to
about 51 parts per thousand) were observed at one site on July 11, 1990.
Recorded water temperatures in the Pamlico River were between 0
and 33 degrees Celsius during the measurement period. Dissolved-oxygen
concentrations ranged from less than 1 to 20 milligrams per liter. In the
Neuse River estuary, salinities ranged from less than 0.1 to
nearly 33 parts per thousand between May 1989 and September 1991.
During the same period, recorded water temperatures in this estuary
were
between 0 and 33 degrees Celsius. Dissolved-oxygen concentrations ranged
from less than 1 to 21 milligrams per liter. Instantaneous values for
selected periods are summarized in a series of box plots. Daily
mean values of salinity, water temperature, dissolved-oxygen
concentrations, and dissolved oxygen, percent saturation, are
presented in tables and graphs, as are 5-day mean values for day
and night conditions. This is the second in a series of reports
summarizing water quality data obtained from these continuously
monitored sites.
Citation:
Garrett, R.G., 1992, Water-quality data from continuously monitored sites in the Pamlico and Neuse River estuaries, North Carolina, 1990-91: U.S. Geological Survey Open-File Report 92-110, 196 p.
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