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Research about South Carolina

Source-linked reports with geographic coverage including South Carolina.

At least 379 records · Page 21Linked to original sources
USGS1987

Floodflow characteristics of Filbin Creek for pre- and post-construction conditions, 1986, at North Charleston, South Carolina

A study to determine the effect of the construction of a shopping and business center, and of the construction and improvement of several highways on floodflow in the Filbin Creek drainage basin near North Charleston, South Carolina was performed. Discharge hydrographs were synthesized using computerized U.S. Soil Conservation Service unit hydrograph methods and routed using reservoir, step backwater, and culvert flow programs. Construction of the shopping and business center, according to plans of July 1986, will raise the water surface elevations upstream of Interstate Highway 26 by about 2.0 ft for runoff from 100-yr rainfall. Structures at Seaboard Railroad downstream of U.S. Highway 52, U.S. Highway 52, and Virginia Avenue would cause about 2.0, 2.6, and 4.1 ft of backwater, respectively. (Author 's abstract)

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USGS1986

Base-flow measurements at partial-record sites on small streams in South Carolina

This report contains site descriptions and base-flow data collected at 362 partial-record sites in South Carolina. These data include site name, site description, latitude, longitude, drainage area, instantaneous streamflow, and date of the streamflow measurement. The base-flow data can be used as an aid to estimate low flow characteristics at ungaged locations on streams in South Carolina. Partial record data collection sites were established in all physiographic provinces except the lower Coastal Plain. Data collection sites were not established in the lower Coastal Plain because of the widespread occurrence of zero during drought periods in all but the larger streams. (USGS)

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USGS1986

Geohydrologic data from Port Royal Sound, Beaufort County, South Carolina

Nine offshore wells were drilled through overlying sediments into the Upper Floridan aquifer in Port Royal Sound, South Carolina and the adjacent Atlantic Ocean, to obtain geologic, hydrologic, and water quality data. The Upper Floridan aquifer consists predominantly of light-gray, poorly consolidated, fossiliferous limestone. In the Port Royal Sound area, the Upper Floridan is overlain by olive-gray, medium to course sand and silty sand. Falling-head permeability tests on these overlying clastic sediments indicate permeabilities of 1,100 to 4.3 x 10 to the 7th power centimeters/sec. Other geologic and hydrologic data, including geophysical logs, sieve analyses, and detailed core descriptions were obtained, along with continuous water level records of the wells, tidal records, and barometric pressure records. Water collected from the Upper Floridan aquifer beneath Port Royal Sound and the ocean ranged in concentration of chloride from 54 to 12,000 mg/l. Measured pH ranged from 6.8 to 8.4, and alkalinity ranged from 122 to 368 mg/l as CaC03. Other water quality data obtained include temperature, specific conductance, carbon-13, carbon-14, tritium , deuterium, oxygen-18, dissolved oxygen, dissolved solids, nitrogen species, phosphorus, organic carbon, cyanide, sulfide, calcium, magnesium, sodium, potassium, sulfate, fluoride, silica , bromide, iodide, and selected trace metals. (USGS)

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USGS1986

Water resources data for South Carolina, water year 1984

Water resources data for the 1984 water year for South Carolina consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels of ground-water wells. This volume contains records for water discharge at 93 gaging stations, stage only at 5 gaging stations, stage and contents at 11 lakes and reservoirs, water quality at 49 gaging stations, and water levels at 62 observation wells. Also included are data for 40 crest-stage partial-record station. Locations of these sites are shown on figures 3, 4, 5, and 6. Additional water data were collected at various sites not involved in the systematic data-collection program. These data represent that part of the National Water Data System collected by the U.S. Geological Survey and cooperating State and Federal agencies in South Carolina.

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USGS1986

Retention time and flow patterns in Lake Moultrie, South Carolina

A liquid dye tracer was injected into the inflow to Lake Moultrie, South Carolina, during high-flow conditions and again during low-flow conditions. Tracer concentrations were monitored at a network of fixed sampling stations in the lake to determine dispersion and transport characteristics in and through the lake. Wind-generated currents were the major factor in dispersing the tracer and controlling the flow patterns, with the advective flow of water through the lake a secondary contributing factor. During the high-flow test, most of the tracer was flushed through the lake in 12 days, which did not allow time for the tracer to fully disperse throughout the lake. During the low-flow test, most of the tracer remained in the lake for more than a of a month. After 16 days it was dispersed throughout the lake. Concentrations of tracer decreased by a factor of about 500 as the dye clouds passed through the lake. (USGS)

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USGS1986

Shallow ground-water resources in the Grand Strand of South Carolina

The shallow aquifers that underlie the Grand Strand of South Carolina average approximately 60 to 400 ft thick and have variable productivity with some wells producing little water and others producing several hundred gal/min. These aquifers are separated from the underlying Black Creek aquifer by a 200 ft to 300 ft thick clay confining unit. The shallow aquifers are recharged by local rainfall and discharge primarily into the Atlantic Ocean, the Intracoastal Waterway, and other surface waters. In the North Myrtle Beach area a vertical difference in potentiometric levels of < 1 ft was observed within the shallow aquifers in 1983. However, the difference in potentiometric levels between the shallow aquifers and the Black Creek aquifer was probably from 25 ft to > 50 ft. The quality of groundwater is also variable. Calcium and bicarbonate are generally the predominant ions in solution as a result of the dissolution of calcite in the aquifer sediments. Concentrations of chloride may be high in the vicinity of the salty surface waters. Concentrations of iron range from 5 to 35,000 micrograms/L, but generally < 2,000 micrograms/L. (Author 's abstract)

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USGS1986

Hydrologic and geologic analysis of two wells in Marion County, South Carolina

Two test wells were drilled in Marion County, South Carolina in 1982. Well MRN 77 (Marion 77) was drilled to a depth of 365 ft and was used as an observation well in the Black Creek aquifer and to supply water during drilling of the deeper well. MRN 78 (Marion 78) was drilled and cored through the entire thickness of Coastal Plain sediments into the underlying basement rock to a depth of 1,225 ft. Data from the wells include description of the core samples from MRN 78, geophysical logs, zone water levels, chemical analysis of the water sampled and results of tests for mineral content. Head in MRN 78 increases with depth. The waters sampled were all sodium bicarbonate type except for the deepest zone (1,120-1,140 ft) sampled in MRN 78, which yielded a sodium chloride type water. (Lantz-PTT)

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USGS1986

Selected aquifer-test information for the coastal plain aquifers of South Carolina

Aquifer and well hydraulic characteristics were determined from more than 100 multiple-well and single-well aquifer tests in the Coastal Plain of South Carolina and tabulated by county. Multiple-well aquifer tests were analyzed by the This method for nonleaky aquifers and the Hantush-Jacob method for leaky aquifers. Single-well tests were analyzed by straight line solution techniques for drawdown and recovery tests. Specific-capacity data are presented for many areas where aquifer-test information is sparse. The characteristics determined are based largely on well performance tests conducted by well drillers and consulting engineers. Although use of this information has many limitations, it has value in establishing transmissivity and storage coefficient values for the Coastal Plain aquifers. (Peters-PTT)

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USGS1985

Geologic evidence for recurrent moderate to large earthquakes near Charleston, South Carolina

Multiple generations of earthquake-induced sand blows in Quaternary sediments and soils near Charleston, South Carolina, are evidence of recurrent moderate to large earthquakes in that area. The large 1886 earthquake, the only historic earthquake known to have produced sand blows at Charleston, probably caused the youngest observed blows. Older (late Quaternary) sand blows in the Charleston area indicate at least two prehistoric earthquakes with shaking severities comparable to the 1886 event.

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USGS1985

Selected hydrologic data from a wastewater spray disposal site on Hilton Head Island, South Carolina

This study presents data collected during a study of the effects on the water table aquifer from wastewater application at rates of up to 5 inches per week on a wastewater spray disposal site on Hilton Head Island, South Carolina. The study was conducted from April 1982 through December 1983. The disposal site covers approximately 14 acres. Water level and water quality data from organic, inorganic, and nutrient analyses from the water table aquifer to a depth of 30 ft and similar water quality data from the wastewater treatment plant are included. (USGS)

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USGS1985

Hydrologic and micrometeorologic data from an unsaturated zone study at a low-level radioactive waste burial site near Barnwell, South Carolina

Two years of selected hydrologic and micrometeorologic data collected at a low-level radioactive waste burial site near Barnwell, South Carolina are available on magnetic tape in card-image format. Hydrologic data include daily measurements of soil-moisture tension, soil-moisture specific conductance, and soil temperature at four monitoring site locations. Micrometeorlogic data include hourly measurements for the following parameters: dry- and wet-bulb temperatures, soil temperatures, soil heat flux, wind speeds and direction, incoming and reflected short-wave solar radiation, incoming and emitted long-wave radiation, net radiation and precipitation. (USGS)

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USGS1985

Potentiometric surfaces of the coastal plain aquifers of South Carolina prior to development

Characteristics of the Coastal Plains aquifers of South Carolina are being studied as a part of the Regional Aquifer Systems Analysis program of the U.S. Geological Survey. A framework has been developed to best represent the hydrology of the Coastal Plain aquifers by dividing them into a system of five aquifers. This framework includes a surficial aquifer consisting of coastal terrace deposits, a limestone and stratigraphically equivalent sand aquifer of Eocene age, and three sand aquifers of Cretaceous age. This report presents a general description of the aquifer framework, potentiometric maps for the aquifers of Eocene and Cretaceous age prior to development, and a general description of the flow system prior to development. In the lower Coastal Plain, flow in the aquifer of Eocene age is generally perpendicular to the coast but is almost parallel to the coast in the aquifers of Cretaceous age. (USGS)

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