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Research about Louisiana

Source-linked reports with geographic coverage including Louisiana.

At least 847 records · Page 47Linked to original sources

Analyses of water, core material, and elutriate samples collected near Galliano, Louisiana: Larose to Golden Meadow, Louisiana, Hurricane Protection Project

Seven core-material-sampling sites were chosen by the U.S. Army Corps of Engineers as possible borrow areas for fill material to be used in levee construction near Galliano, La. Four receiving-water sites also were selected to represent the water that will contact the proposed levees. Analyses of selected nutrients, metals, pesticides, and other organic constituents were performed upon these bed-material and native-water samples as well as upon elutriate samples of specific core material-receiving water systems. The results of these analyses are presented without interpretation.

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Water resources data for Louisiana, water year 1977, volume 1. Central and northern Louisiana

Water resources data for the 1977 water year for Louisiana 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. This report, in three volumes, contains discharge records for 72 gaging stations; stage records for 66 of these gaging stations; stage only for 30 gaging stations; contents for1 reservoir; stage only for 10 lakes; water quality for 148 stations; 27 of these at gaging stations; 215 areal stations, 10 lakes, and 174 wells; and water levels for 696 observation wells. Also included are 199 crest-stage partial-record stations and flood-profile partial-record stations. Additional water data were collected at various sites, not involved in the systematic data-collection program, and are published as miscellaneous measurements. Records for a few pertinent stations in bordering States are also included in this report. 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 Louisiana.

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Water resources data for Louisiana, water year 1977, volume 2. Southern Louisiana

Water resources data for the 1977 water year for Louisiana 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. This report, in three volumes, contains discharge records for 72 gaging stations; stage records for 66 of these gaging stations; stage only for 30 gaging stations; contents for 1 reservoir; stage only for 10 lakes; water quality for 148 stations; 27 of these at gaging stations; 215 areal stations, 10 lakes, and 174 wells; and water levels for 696 observation wells. Also included are 199 crest-stage partial-record stations and flood-profile partial-record stations. Additional water data were collected at various sites, not involved in the systematic data-collection program, and are published as miscellaneous measurements. Records for a few pertinent stations in bordering States are also included in this report. 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 Louisiana.

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Water resources data for Louisiana, water year 1977, volume 3. Coastal Louisiana

Water resources data for the 1977 water year for Louisiana 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. This report, in three volumes, contains discharge records for 72 gaging stations; stage records for 66 of these gaging stations; stage only for 30 gaging stations; contents for 1 reservoir; stage only for 10 lakes; water quality for 148 stations; 27 of these at gaging stations; 215 areal stations, 10 lakes, and 174 wells; and water levels for 696 observation wells. Also included are 199 crest-stage partial-record stations and flood-profile partial-record stations. Additional water data were collected at various sites, not involved in the systematic data-collection program, and are published as miscellaneous measurements. Records for a few pertinent stations in bordering States are also included in this report. 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 Louisiana.

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Simulation studies of flow and sediment transport using a mathematical model, Atchafalaya River Basin, Louisiana

Simulation studies were made of flow and sediment transport for the Atchafalaya River basin, Louisiana using a mathematical model calibrated and supplied by the Hydrologic Engineering Center and the New Orleans District, U.S. Army Corps of Engineers. The study results are based on three, 50-year computer simulations for the following alternatives: (1) no-action alternative, (2) channelization with a center-channel flow area of 80,000 sq ft, and (3) channelization with a center-channel flow area of 100,000 sq ft. Analyses of the simulated data base for depth-frequency, inundated-area, floodway cross-section and water-surface profile relationships were made for 10 flow rates. The analyses indicate a general trend of aggradation in the lower part of the floodway with a consequent trend toward increasing the inundated area, especially at higher flood flows.

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Water resources data for Florida, water year 1975, v. 2, southern Florida

Water resources data for the 1975 water year for southern Florida consist of records of stage, discharge, and water quality of streams; elevation and water quality of lakes and reservoirs; and water-levels and water quality of wells and springs. 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 Florida.

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Water resources data for Louisiana, water year 1976: Volume 2. Southern Louisiana

Water resources data for the 1976 water year for Louisiana consist of records of stage, discharge, and water quality of streams; water quality of lakes; and water levels and water quality for wells. This report contains discharge records for 22 gaging stations; stage only records for 12 gaging stations; water quality for 61 continuous, daily or bi-weekly stations, 240 miscellaneous stations, and 256 wells; and water levels for 387 observation wells. Also included are data for 31 crest-stags partial-record stations and 65 flood-profile partial-record stations. Additional water data were collected at 10 various sites, not part of the systematic data-collection program, and are published as miscellaneous measurements. Records for a few pertinent stations in bordering States are also included in this report. 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 Louisiana.

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Field verification of method for distributing flow through multiple-bridge openings

Field data collected at three sites in Louisiana having multiple-bridge openings were used to check a method of distribution of flow through two or more bridges. Actual peak discharges in the various main and overflow bridges ranged from 878 to 11,055 cubic feet per second (24.9 to 313 m 2 /s). The error of the computed discharge to the actual discharge ranged between -20 and +6 percent, with the exception of one opening that had an error of +101 percent.

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Simulation of forest changes related to hydrologic variables in the Atchafalaya River basin, Louisiana

Results of forest-trend modeling from one data set in the Atchafalaya River basin show that predicted forest acreage totals for 16 forest types agree within 30 percent of actual values in two-thirds of the comparisons. A forest-trend simulation model based on statistical regression relations of forest and hydrologic variables and constrained by forest succession concepts was developed using observed data from twenty-four 8-square-mile (20.74-square-kilometre) quadrats. Forest and hydrologic data at each quadrat were sampled in time at three 4-mile (6.44-kilometre)-wide strips across the basin. The model predicts changes in forest-type acreages due to hydrologic change in time steps, or forest acreage transition, of 21 years. Further basin-wide quadrat simulations are planned using hydrologic input data from a flow-sediment model of the basin currently being developed. Other ecosystem models could be appended to the forest-trend simulation model.

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Water resources data for Louisiana, water year 1974

Water resources data for the 1974 water year for Louisiana including records of streamflow or reservoir storage at gaging stations, partial-record stations, and miscellaneous sites, and records of water-quality data on the chemical and physical characteristics of surface water, are given in this report. In Part 1, records are included for 355 gaging stations of which 74 are streamflow discharge stations, 8 are stage only streamflow stations, and 11 are reservoir or lake stations; also are included records for 110 flood-profile partial-record stations, 83 crest-stage partial-record stations, and 69 miscellaneous sites Locations of continuous-record gaging stations are shown in figure 1 and locations of crest-stage partial-record stations are shown in figure 2. In Part 2, water-quality data on chemical, physical, and biological characteristics of surface water were collected from designated sampling sites at predetermined intervals such as once daily, weekly, monthly, or less frequently, and at some sites data were recorded on punched paper tape at 15- or 60-minute intervals. Records are given for sampling stations of which 12 are continuous-record stations, 50 are partial-record stations, and 103 are miscellaneous sites. Locations of water-quality stations are shown in figure 3. A few pertinent stations in bordering States are also included in this report. The records were collected and computed by the Water Resources Division of the U.S. Geological Survey under the direction of Albert N. Cameron, district chief. 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 Louisiana.

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Water resources data for Louisiana, water year 1975

Water resources data for the 1975 water year for Louisiana 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 for wells. This report contains discharge records for 76 gaging stations; stage only records for 36 gaging stations; water quality for 79 continuous, daily or hi-weekly stations, 20 partial-record stations, and 6 wells; and water levels for 105 observation wells. Also included are data for 84 crest-stage partial-record stations and 114 flood-profile partial-record stations. Additional water data were collected at 433 various sites, not part of the systematic data-collection program, and are published as miscellaneous measurements. Records for a few pertinent stations in bordering States are also included in this report. 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 Louisiana.

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Geohydrology and water quality of the Mississippi River alluvial aquifer, northeastern Louisiana

The Mississippi River alluvial aquifer in northeastern Louisiana is in the alluvium of the Mississippi, Arkansas, and Ouachita Rivers and underlies approximately 5,000 square miles (13,000 square kilometers) in the Mississippi River valley. The aquifer, of Pleistocene age, is a southeastward-thickening wedge of sand and gravel that ranges in thickness from about 20 to 135 feet (6 to 41 metres). These sediments are essentially flat lying with an irregular base. Fine sand, silt, and clay of Holocene age overlie and generally confine the aquifer. These fine-grained deposits range in thickness from 0 to 100 feet (0 to 30 metres) but generally do not exceed 40 feet (12 metres). Water levels in the Mississippi River alluvial aquifer generally are less than 30 feet (9 metres) below land surface. Annual water-level fluctuations have a maximum range of about 20 feet (6 metres) near the Mississippi River and a minimum range of only a few feet in interstream areas. Seasonal declines occur locally, especially in Morehouse Parish, because of large withdrawals for irrigation. The Mississippi River alluvial aquifer can yield water in sufficient quantity for most uses throughout the area. Aquifer tests indicate that the transmissivity ranges from 13,000 to 45,000 feet squared per day (1,200 to 4,200 metres squared per day). The hydraulic conductivity ranges from 130 to 530 feet per day (40 to 160 metres per day). Storage coefficients range from 0.001 to 0.05. Large diameter wells yield as much as 7,000 gallons per minute (440 litres per second) near Tallulah in Madison Parish. The quality of ground water in the Mississippi River alluvial aquifer varies areally and with depth, but generally the water is hard to very hard and high in iron concentration, Where fresh, the water typically is a calcium bicarbonate type generally ranging in hardness from 200 to 600 mg/1 (milligrams per litre) and in iron concentration from 0.00 to 30 mg/1. However, in southern Richland Parish and local areas in adjacent parishes, a hardness of less than 100 mg/1 and an iron concentration of less than 0.30 mg/1 are common. Fresh water occurs to or below the base of the alluvial aquifer in most of the area. The chloride concentration typically is less than 50 mg/1. However, chloride concentrations are as high as 4,000 mg/1 in parts of the area. At some localities, salty water (chloride concentrations greater than 250 mg/1) occurs in the aquifer at depths less than 30 feet (9 metres). The largest occurrence of salty water is in Franklin Parish near and parallel to the subsurface contact between clays of the Jackson Group and sands of the Cockfield Formation of the Claiborne Group. Thus, salty water moving from the Cockfield into the alluvium may be the source of some of the high-chloride water. Smaller bodies of salty water occur in the aquifer along the Jackson-Cockfield contact in Madison and Caldwell Parishes. Probably some contamination from pits formerly used for disposal of salty water occurs in northern Franklin and southern Richland Parishes, Other small occurrences of salty water in Concordia, Morehouse, Ouachita, and Tensas Parishes may be related to contamination by salt-water disposal pits and wells, leaky oil-well casings, and oil-well drilling mishaps.

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Quality of water in the Red River alluvial aquifer, Shreveport, to the mouth of the Black River, Louisiana

Chemical analyses of water samples from 296 wells in the Red River alluvial aquifer indicate that the ground water in the valley is generally hard (more than 120 milligrams per liter) and has a high iron concentration (greater than 6,000 micrograms per liter). The predominant ions found in the water were calcium and bicarbonate. However, in places in the vicinity of Natchitoches, saline water, probably from underlying formations, has infiltrated the aquifer and sodium and chloride are the principal constituents.

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Time-of-travel of solutes for New River near Geismar, Louisianna

A water tracer (2.0 liters of Rhodamine WT, 20 percent) was injected into New River about 1 mile northwest of Geismar (river mile 26.1) at 0900 hours on April 3, 1974. Figure 1 is a location map showing the stream and sampling sites. As the water tracer moved downstream and dispersed, its concentration was measured periodically at State Highway 30 (river mile 24.5) and near Gonzales (river mile 17.7). Time-concentration curves developed for these two sites are shown in figures 2 and 3, respectively. This study was intended to include observations of the travel at the dam at river mile 14.2; hut high rainfall on April 12 disrupted New River and the tracer, and the study was terminated. However, the leading edge of the dispersed tracer was observed at river mile 14.7 before the study was stopped. The lapsed time and the location of the leading edge of the tracer from time of injection are given in table 1. A discharge of 4.9 ft3/s (cubic feet per second) was measured on April 3 at State Highway 30, and 3.7 ft3/s was measured on April 6 at river mile 17.7 near Gonzales. Each measurement was made during the peak concentration.

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Water resources data for Louisiana, water year 1973

Water resources data for the 1973 water year for West Virginia including records of streamflow or reservoir storage at gaging stations, partial-record stations, and miscellaneous sites, records of water-quality data on the chemical and physical characteristics of surface water, and records of ground-water levels at index wells are given in this report. In Part 1, records are included for 126 gaging stations of which 119 are streamflow discharge stations, 1 is stage only streamflow station, and 6 are reservoir or lake stations; also included are records for 2 low-flow partial-record stations, 39 crest-stage partial-record stations and 7 miscellaneous sites. Locations of gaging stations are shown in Figure 1, and location of partial-record stations are shown in Figure 2. In Part 2, data on the quality of surface water (chemical, temperature, and sediment) were collected from designated sampling sites at predetermined intervals, such as once daily, weekly, monthly, or less frequently, and at some sites data were recorded on punched paper tape at 15-, 30-, or 60-minute intervals. Records are given for 28 sampling stations of which 18 are continuous record stations, and 10 are partial-record stations. Locations of water quality stations are shown in Figure 1. A few pertinent stations (not included above) in bordering States are also included in this report. In Part 3, records are included for 46 observation wells of which 8 are equipped with water-level recorders that give a continuous graph of the fluctuations, 3 are equipped with digital recorders that punch the water level on a tape at hourly intervals, at 35 manual reading are made with a steel tape by observers on the days indicated. Locations of index wells are shown in Figure 2. The records were collected and computed by the Water Resources Division of the U.S. Geological Survey under the direction of Edwin E. Harris, district chief. These data represent that portion of the National Water Data System collected by the U.S. Geological Survey and cooperating State and Federal agencies in West Virginia. Beginning with the 1961 water year, streamflow records and related data have been released by the Geological Survey in annual reports on a State-boundary basis. Water-quality records beginning with the 1964 water year have been similarly released either in separate reports or in conjunction with streamflow records. These reports are for limited distribution and are designed primarily for rapid release of data shortly after the end of the water year. Records of discharge and stage of streams, and contents and stage of lakes and reservoirs are published in a series of U.S. Geological Survey water-supply papers entitled, "Surface Water Supply of the United States." Through September 30, 1960, these water-supply papers were in an annual series and since then are in a 5-year series. Records of chemical quality, water temperatures, and suspended sediment have been published since 1941 in an annual series of water-supply papers entitled, "Quality of Surface Waters of the United States." More information is given under the headings "Publications" on page 21. Records of ground water levels are published in a series of water supply papers entitled, "Ground-water Levels in the United States". Through 1955 these were in an annual series but are now in a 5-year series. More information is given under the heading "Publications" on page 22.

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Water resources data for Louisiana, water year 1972

Water-resources data for the 1972 water year for Louisiana, including records of streamflow or reservoir storage at gaging stations, partial-record stations, and miscellaneous sites, and records of water-quality data on the chemical and physical characteristics of surface water are given in this report. Records for a few pertinent gaging stations in bordering States are also included. The records were collected and computed by the Water Resources Division of the U.S. Geological Survey under the direction of Albert N. Cameron, district chief. These data represent that portion of the National Water Data System collected by the U.S. Geological Survey and cooperating State and federal agencies in Louisiana.

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