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Research about Mississippi

Source-linked reports with geographic coverage including Mississippi.

At least 253 records · Page 14Linked to original sources
USGS1981

Water resources data for Mississippi, water year 1980

Water resources data for the 1980 water year for Mississippi consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels and water quality of ground-water wells. This report contains records of water discharge at 82 gaging stations; stage records for 17 of these gaging stations; stage only at 4 gaging stations; contents for 4 lakes; water quality for 32 gaging stations, and 105 wells; and water levels for 360 observation wells. Also included are peak-discharge data for 94 crest-stage partial-record stations and water quality data at 19 partial record or miscellaneous sites. Additional water data were collected at various sites, not part of the systematic data collection program, and are published as miscellaneous measurements. These data represent that part of the National Water Data System operated by the U.S. Geological Survey and cooperating State and Federal agencies in Mississippi.

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USGS1980

Quality of water and time of travel in Hobolochitto Creek, Pearl River County, Mississippi

In Mississippi, an intensive study of Hobolochitto Creek, including the lower parts of East and West Hobolochitto Creeks, was conducted on September 12-14, 1978. The quality-of-water data were collected during a period of generally low streamflow and seasonally high air temperatures. These data show that the quality of water in Hobolochitto Creek was generally good. The dissolved-solids concentrations were less than 50 milligrams per liter, and the concentrations of nitrogen and phosphorus species were low. The 5-day biochemical oxygen demand generally was minimal, and dissolved-oxygen concentrations were at levels that could support aquatic life. Several water samples contained high fecal bacteria densities and there was evidence of the presence of wastes of human origin, particularly at the downstream sites on Hobolochitto Creek. It was determined from a time-of-travel study that the rate of solute travel is very slow at low streamflow. A peak dye concentration traveled through a 3.7-mile reach of Hobolochitto Creek in 23.5 hours.

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USGS1980

Results of water quality sampling near Richton, Cypress Creek and Lampton salt domes, Mississippi

In the Mississippi salt basin in southern Mississippi, chemical quality studies of surface water and ground water have been made to determine present water-quality conditions near three salt domes being studied by the Department of Energy as potential repositories for radioactive wastes. Chloride concentrations in excess of 60 milligrams per liter in surface water and ground water in Perry County indicate that contamination could be occurring from industrial wastes, oil test wells, or dissolution of Richton or Cypress Creek domes.

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USGS1980

A preliminary report of the geohydrology of the Mississippi salt-dome basin

The U.S. Department of Energy is investigating the suitability of salt domes in the Mississippi salt-dome basin as repositories for storing radioactive wastes. The Department of Energy has requested that the U.S. Geological Survey describe the groundwater hydrology of the Mississippi salt-dome basin, giving special attention to direction and rate of movement of water. In this first part of a continuing investigation the data obtained from one year of extensive literature search and data compilation are summarized. The regional groundwater hydrology in the salt-dome basin is defined with respect to (1) groundwater flow, (2) facies changes, (3) geological structure, (4) recharge and discharge, (5) freshwater-saltwater relations, and (6) identification of localities where additional data are needed. From the 50 piercement-type salt domes in the Mississippi salt-dome basin three domes (Richton, Cypress Creek, and Lampton) were selected for more intensive study. To further evaluate the geohydrology of Richton, Lampton, and Cypress Creek domes as possible sites for storage of radioactive waste, an intensive geohydrologic study based on a comprehensive test drilling program near the domes is planned. (USGS)

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USGS1980

Potentiometric map of the Winona-Tallahatta aquifer in northwestern Mississippi, fall 1979

The potentiometric map of the Winona-Tallahatta aquifer is one of a series of maps, prepared by the U.S. Geological Survey in cooperation with the Mississippi Department of Natural Resources , Bureau of Land and Water Resources, delineating the potentiometric surfaces of the major aquifers in Mississippi. In the outcrop area of the Winona-Tallahatta aquifer the potentiometric surface is strongly affected by recharge from precipitation, by topography, and by drainage of the aquifer by streams. The potentiometric surface slopes downward generally to the west away from the area of outcrop and is strongly affected by recharge from precipitation, by topography, and by drainage of the aquifer by streams. The potentiometric surface slopes downward generally to the west away from the area of outcrop and is strongly affected by pumpage from wells in Leflore, Sunflower , and Bolivar Counties, Historically, water levels in or near the outcrop of the Winona-Tallahatta have shown little or no long-term changes, but the heavy withdrawals in the confined part of the aquifer have caused long-term water-level declines of 1 to 2 feet per year. (USGS)

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USGS1980

Quality of water and time of travel in Yockanookany River, Choctaw County, Mississippi

An intensive study of a 3.3-mile reach of the Yockanookany River, including a major tributary, was conducted August 29-31, 1978. The quality-of-water data were collected during a period of generally law streamflow and seasonally high air temperatures. These data show that the quality of water in Yockanookany River was generally good. The dissolved-solids concentrations were less than 50 milligrams per liter, and the concentrations of nitrogen and phosphorus compounds were low. Ammonia nitrogen and total nitrogen concentrations were higher downstream than upstream. Ammonia nitrogen concentrations ranged from 0.10 to 0.40 milligrams per liter and total phosphorous concentrations ranged from 0.14 to 0.43 milligrams per liter at the downstream site. The 5-day biochemical oxygen demand in the river entering and leaving the study reach generally was less than 2.5 and 6.0 milligrams per liter, respectively. Dissolved-oxygen concentrations generally were higher at the upstream site than the downstream site and were at levels that could support aquatic life at both sites. Several water samples collected at the downstream site contained high fecal bacteria densities and there was some evidence of the presence of wastes of human origin. It was determined from a time-of-travel study that the rate of solute travel was 0.15 mile per hour at law streamflow. A peak dye concentration traveled through a 3.3 mile reach of Yockanookany River in 221/2 hours.

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USGS1980

Water resources data for Mississippi, water year 1978

Water resources data for the 1978 water year for Mississippi consist of record of stage and discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels of wells. This report contains discharge records for 82 gaging stations; stage records for 15 of these gaging stations; stage only for 3 gaging stations; contents for 4 lakes; water quality for 25 gaging stations, and 164 wells; and water levels for 175 observation wells. Also included are data for 92 crest-stage partial-record stations. Additional water data were collected at various sites, not part of the systematic data collection program, and are published as miscellaneous measurements. These data represent that part of the National Water Data System operated by the U.S. Geological Survey and cooperating State and Federal agencies in Mississippi.

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USGS1979

Seismicity map of the State of Mississippi

The earthquake data shown on this map and listed in table 1 are a list of earthquakes that were originally used in preparing the Seismic Risk Studies in the United States in the United States (Algermissen, 1969) which have been recompiled and updated through 1977. These data have been reexamined which resulted in some revisions of epicenters and intensities as well as assignment of intensities to earthquakes that previously had none assigned. Other intensity values were updated from new and additional data sources that were not available at the time of original compilation. Some epicenters were relocated on the basis of new information. The data shown in table 1 are estimates of the most accurate hypocenter, magnitude, and intensity of each earthquake, on the basis of historical and current information. Known or suspected explosions are listed in table 1 but are not plotted on the seismicity map.

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USGS1979

Quality of water in Bayou Casotte and Bayou Chico, Jackson County, Mississippi

A short-term water-quality study on Bayou Casotte and Bayou Chico on the Mississippi Gulf Coast was conducted on July 25-27, 1978. The results of the study indicated that the chemical and physical properties and range of concentrations of several dissolved constituents in both estuaries varied during a tide cycle primarily as the result of the interaction of freshwater and wastewater inflow with the saline Gulf waters. The water quality condition of both estuaries generally was good and the low 5-day biochemical oxygen demand in the estuaries indicated that excessive oxygen demand was not exerted during the study. The 5-day biochemical oxygen demand generally was less than 3.5 milligrams per liter. Dissolved-oxygen concentrations decreased with depths and the lowest concentrations occurred below 30-foot depths in Bayou Casotte. Oxygen levels at shallow depths generally were less in Bayou Chico than in Bayou Casotte. Dissolved-oxygen concentrations in Bayou Casotte ranged from 0.7 to 7.7 milligrams per liter at high tide and from 2.5 to 8.2 milligrams per liter at low tide. In general, phosphorus and nitrogen species were present in comparatively high concentrations in both estuaries; were higher at low tide that at high tide; and were highest in Bayou Casotte upstream of Bayou Casotte harbor. Concentrations of the nitrogen species during a tide cycle generally were lower at the mouth of Bayou Casotte than at the mouth of Bayou Chico. Fecal bacteria at most sampling sites were generally in concentrations indicative of recent manmade pollution.

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USGS1979

The Citronelle aquifers in Mississippi

The Citronelle aquifers consist of sand and gravel of Pliocene age that forms a discontinuous outcrop area of about 6,000 square miles in southern Mississippi. The beds dip to the south at an average rate of about 6 feet per mile. The unconfined aquifers are used mostly for domestic and farm use but also supply water to several municipalities and industries. The average saturated thickness of the aquifers is about 45 feet. This physically limits drawdown space and, although specific capacities are high, yields generally do not exceed a few hundred gallons per minute. Water levels have not declined significantly because withdrawals are small. Water quality is generally good although in some places there are objectionally high concentrations iron and in some the water is acidic.

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USGS1979

The Oligocene aquifer system in Mississippi

The Oligocene aquifer system in Mississippi consists of limestone and marl members of the Vicksburg Group, and the underlying Forest Hill Sand. The aquifer system crops out in a band 5 to 10 miles wide, that trends southeast across the State from the Warren-Yazoo County line to northeastern Wayne County. In the northwest part of the area, the formations dip to the southwest at 12 feet per mile. At the southeastern end of the outcrop, the dip is 42 feet per mile. The average dip for the entire area is 30 feet per mile. The aquifers are of primary importance for domestic and farm use. Total withdrawal in 1977 was about 1.4 million gallons per day. Since 1963 water levels have declined an average of between 0.05 and 2 feet per year. Water quality is generally good although in some places there are objectionably high concentrations of iron and color. (Woodard-USGS)

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USGS1979

Potentiometric map of the Paleozoic aquifer in northeastern Mississippi, October and November 1978

The Paleozoic rocks that outcrop in Tishomingo County, Mississippi, supply water to public, industrial, and domestic wells in two counties in the northeastern part of the State. Paleozoic rocks in the area consist mostly of beds of sandstone, shale, and limestone which dip about 30 feet per mile to the southwest. The potentiometric surface of the Paleozoic aquifer slopes generally to the west away from the area of outcrop and is strongly influenced by large ground-water withdrawals at Corinth. The water level at Corinth has declined about 140 feet since 1954. Pumping at Corinth has affected water levels in wells more than 10 miles from the center of pumping. (Woodard-USGS).

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USGS1978

Backwater at bridges and densely wooded flood plains, Tallahala Creek at Waldrup, Mississippi

New techniques for predicting water-surface profiles, needed in the design of economical, structurally sound, and environmentally compatible stream crossings, are under investigation. The investigation has accelerated with the advent of digital computers capable of analyzing large quantities of data. Among the techniques is the development of two-dimensional (2-D) digital models. Field data are essential for development and evaluation of these techniques for predicting water-surface profiles. This atlas is the first of a series that will provide a wide range of field data.

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USGS1978

Backwater at bridges and densely wooded flood plains, Bogue Chitto near Summit, Mississippi

New techniques for predicting water-surface profiles, needed in the design of economical, structurally sound, and environmentally compatible stream crossings, are under investigation. The investigation has accelerated with the advent of digital computers capable of analyzing large quatities of data. Among the techniques is the development of two-dimensional (2-D) digital models. Field data are essential for development and evaluation of these techniques for predicting water-surface profiles. This atlas is one of a series that provide a wide range of field data.

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