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C.F. Keech

Publications and source records attributed to C.F. Keech.

7 recordsLinked to original sources
USGS1973

A plan for study of water resources in the Platte River basin, Nebraska: with special emphasis on the stream-aquifer relations

A "Level B" study is being made of the Platte River basin in Nebraska. The basin (approximately 40,800 square miles) extends the full length of the State, a distance of nearly 470 miles. The study is a Federal and State interagency effort to formulate a comprehensive plan for the conservation, development, and management of the water and related land resources of the Platte River basin. The technical information for the study will be provided by 14 task forces. This report describes the work of the Level B Stream-Aquifer Hydrology Task Force (Task Force 13). The U.S. Geological Survey is the lead agency for this task force. Task Force 13 will provide the agencies participating in the Level B study with a quantitative description of the operation of the hydrologic system with emphasis on the relation of ground water to surface water. A digital model will be developed to simulate the physical character and operation of the stream-aquifer system. After the model has been calibrated with field data, it will be used to evaluate the effect of proposed projects. Some of the uses of the model are evaluation of effects of proposed conjunctive use projects, effects of changes in water use, and study of future water problems such as water-logged areas, groundwater mining, and streamflow depletion.

Nebraska↗
USGS1957

Water levels in observation wells in Nebraska during 1956

The Objective of the observation-well program in Nebraska is to provide an evaluation of the status of the ground-water supplies. Many uses tor water-level data are known but not all potential uses can be foreseen. Among the important uses are the following: (1) To indicate the status of ground water in storage or in transit and the availability or supplies. (2) To show the trend of ground-water supplies and the outlook tor the future. (3) To estimate or forecast the base flow of streams. (4) To indicate areas in which the water level is approaching too close to the land surface (water-logging) or is receding toward economic limits of lift or toward impairment by water of poor quality. (5) To provide long-term evidence for evaluating the effectiveness of land-management and water-conservation programs in relation to water conservation actually effected, and for use in basin or "watershed" studies. (6) To provide long-term continuous records to serve as a framework to which short-term records collected during intensive investigation may be related. The water level in an observation well functions as a gage to indicate the position or the water table. The water table is defined as the upper surface of the zone of saturation except where that surface is formed by overlying impermeable materials. The water table is also the boundary between the zone of saturation and the zone of aeration. It is not a level surface but is a sloping surface that has many irregularities, and it often conforms in a general way to the land surface. The irregularities are caused by several factors. In places where the recharge to the ground-water reservoir is exceptionally large, the water table may rise to form a mound from which the water slowly spreads. Depressions or troughs in the water table indicate places where the ground water is discharging, u along streams that are below the normal level it the water table, or indicate places where water is being withdrawn by wells or vegetation. The several factors that influence the water table vary in fact and amount from time to time because of changes in weather and the water requirements or vegetation and man; thus, the water table is nearly always rising or falling. The fluctuations or the water table are shown by the changes in water levels in wells. Thus, the rate and amount of the fluctuation of the water table can be ascertained by observing the water levels in wells, and the magnitude or the several factors effecting the position of the water table can be interpreted by analyzing the water-level data. Water-level measurements are given, in this report, in feet below the land surface at the well site. Water levels that are above land surface are preceded by a plus (+) sign in the tables, whereas those below land surface have no sign but are understood to be minus (-). The words "land-surface datum" are abbreviated "lsd'' in some places in tables of this report. The altitude above mean sea level (msl) of the land surface at many of the well sites has been determined and is included in the tables or this report. Twenty-eight observation wells in Nebraska are equipped with recording gages. Each recording gage produces a continuous graph of water-level fluctuations in the well. Only the lowest water level on the last day of record in each month, as recorded by the gage, is given in this report; the complete record is on file in the office of the U.S. Geological Survey in Lincoln, Nebr.

Nebraska↗
USGS1956

Water levels in observation wells in Nebraska during 1955

The objective of the dbservation-well program in Nebraska is to provide an evaluation of the status of the ground-water supplies. Many uses for water-.level data are known but not all potential uses can be forseen. Among the important uses are the following: To indicate the status of ground water in storage or in transit and the availability of supplies. To show the trend of ground-water supplies and the outlook for the future. To estimate or forcast the base flow of streams. To indicate areas in which the water level is approaching too close to the land surface (water-logging) or is receding toward economic limits of lift or tow rd impairment by water of poor quality. To provide long-term vidence for evaluating the effectiveness of land-management and water...0 nservation programs in relation to water conservation actually of ected, and for use in basin or "watershed" studies. To provide longterm ontinuous records to serve as a framework to which short-term records collected during intensive investigation may be related. The water level in an observation well functions as a gage to indicate the position of the water table o The water table is defined as the upper surface of the zone of saturation except where that surface is formed by overlying impermeable materials. The water table is also the boundary between the zone of saturation and the zone of aeration. It is not a level surface but is a sloping surface that has many irregularities, and it often conforms in a general way to the land surface. The irregularities are caused by several factors. In places where the recharge to the ground-water reservoir is exceptionally large, the water-table may rise to form a mound from which the water slowly spreads. Depressions or troughs in the water table indicate places where the ground water is discharging, as along streams that are below the normal level of the water table, or indicate places where water is being withdrawn by wells or vegetation. The several factors that influence the water table vary in fact and amount from time to time because of changes in weather and the water requirements of vegetation and man; thus, the water table is nearly always rising or falling. The fluctuations of the water table are shown by the changes in water levels in wells. Thus, the rate and amount of the fluctuation of the water table can be ascertained by observing the water levels in wells, and the magnitude of the several factors effecting the position of the water table can be interpreted by analyzing the water—level data. Water-level measurements are given, in this report, in feet below the land surface at the well site. Water levels that are above land surface are preceded by a plus (+) sign, whereas those below land surface have no sign but are understood to be minus (-). The words "land-surface datum" are abbreviated "lsd" in tables of this report. The altitude above mean sea level (msl) of the land surface at many of the well sites has been determined and is included in the tables of this report. Lower case letters which appear in the table of water level measurements indicate the following: 6', nearby well pumped recently; f, dry; g, measured by outside agency; and j, frozen. Twenty-.six observation wells in Nebraska are equipped with recording gages. Each recording gage produces a continuous graph of water-level fluctuations in the well. Only the lowest water level on the last day of record in each month, as recorded by the gage, is given in this report; the complete record is on file in the office of the U. S. Geological Survey in Lincoln, Nebr.

Nebraska↗
USGS1955

Water levels in observation wells in Nebraska during 1954

The observation well program, begun in 1934 in cooperation with the Conservation and Survey Division, University of Nebraska, was continued during 1954. The United States Geological Survey began a series of ground-water investigations in Nebraska during the fall of 1945, as part of the program for development of the Missouri River basin. These investigations, during 1954, consisted principally of the collection and compilation of water-level data. Most of the water-level measurements in this report were obtained and all were compiled as part of the Missouri River basin development program.

Nebraska↗
USGS1954

Water levels prior to January 1, 1954 in observation wells, in Nebraska: part 1. Adams through Howard Counties

During the fall of 1945, as part of the program for the development of the resources of the Missouri River basin, the United States Geological Survey began a new series of groundwater investigation in Nebraska. Those studies were coordinated with the already existing program of ground-water studies that was begun in 1930 by the U.S. Geological Survey in cooperation with the Conservation and Survey Division of the University of Nebraska. Most of the water-level measurements in this report were obtained and compiled as part of the Missouri Basin Development Program.

Nebraska↗