Compilation of water-resources data and hydrogeologic setting for Brunswick County, North Carolina, 1933-2000

Abstract

Temperature can be converted to degrees Fahrenheit (°F) or degrees Celsius (°C) by using the following equations:°F = (°C x 1.8) + 32°C = (°F-32) / 1.8 Sea Level: In this report, "sea level" refers to the National Geodetic Vertical Datum of 1929 (NGVD or 1929)-a geodetic datum derived from a general adjustment of the first-order level nets of both the United States and Canada, formerly called Sea Level Datum of 1929. Abbreviated water-quality units: Chemical concentrations are given in metric units. Waterquality units are expressed in micrograms per liter (µg/L) or milligrams per liter (mg/L) in this report. Multiply By To obtain Area inch (in.) 2.54 centimeter foot (ft) 0.3048 meter mile (mi) 1.609 kilometer square mile (mi 2) 2.590 square kilometer Volume cubic foot (ft 3) 0.02832 cubic meter Flow Rate cubic foot per second (ft 3 /s) 0.02832 cubic meter per second Cover photograph: Groundwater level monitoring well BR-107 in Brunswick County, North Carolina (photograph by J.M. Fine, USGS).

Hydrogeology and Ground-Water Quality of Brunswick County, North Carolina

“…Climatic data compiled by Fine and Cunningham (2001) from weather stations in and around Brunswick County indicate that mean monthly temperatures range from about 44 degrees Fahrenheit (°F) in January to 79 °F in July. The annual precipitation averages about 55 inches (in.)…”

“…The annual precipitation averages about 55 inches (in.) at weather stations having more than 25 years of record (Fine and Cunningham, 2001). Overland runoff of precipitation to surfacewater bodies in Brunswick County occurs in three drainage subbasins, including the Waccamaw, Lower Cape Fear, and Carolina Coastal-Sampit subbasins ( fig.…”

“…This study was a regional investigation that identified 10 aquifers and 9 confining units that compose the North Carolina Coastal Plain aquifer system. Correlation of the aquifers is illustrated in 18 hydrogeologic sections; 4 of these hydrogeologic sections were completed in or near Brunswick County and are described in Fine and Cunningham (2001). These sections provide general information on the individual hydrogeologic units in or near Brunswick County.…”

“…The geologic units for the shallow stratigraphy of Brunswick County include a surficial sand unit, a Pliocene/Pleistocene unit, the Castle Hayne Formation, the Beaufort Formation, and the Peedee Formation. Four of the geologic sections in Brunswick County that were constructed by Zarra (1991) are described in Fine and Cunningham (2001).…”

“…In the initial phase of this study, Fine and Cunningham (2001) compiled available water-resources data to describe hydrologic conditions in Brunswick County. In the second phase of this study, a comprehensive evaluation of available ground-water resources in the county was made and is presented in this report.…”