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Modifications to Filling and Emptying System of Lock No. 1, Mississippi River, Minneapolis, Minnesota =: Hydraulic Model Investigation

Description: From abstract: The existing locks at Locks and Dam No. 1 were constructed between 1929 and 1932. Problems have been experienced with accumulation of ice and debris at the intakes, air entrapment in the culverts of the filling and emptying system, excessive turbulence in the lock chamber during filling, and hazardous conditions downstream from the locks during emptying operations.
Date: December 1979
Creator: Ables, Jackson H.
Partner: UNT Libraries Government Documents Department

Pay Secrecy

Description: This issue brief discusses pay secrecy policies that nearly half of workers nationally reported that they were either contractually forbidden or strongly discouraged from discussing their pay with their colleagues. Includes a listing of state laws that protect employees in discussing pay and compensation.
Date: June 2016
Creator: United States. Department of Labor.
Partner: UNT Libraries Government Documents Department

Water Resources of the Red River of the North Drainage Basin in Minnesota

Description: The report consists of three principal sections; environmental setting, water resource management, and the hydrologic system. The environmental setting describes the land and people as related to water resources. The section on water resource management is intended to provide practical information needed for the planning and management of water resources. The section on the hydrologic system is a more technical discussion of water in the Red River basin. The section on water management can be used to locate the water, determine the amount available and its quality; whereas, the section on the hydrologic system describes the operation of the system how water moves through the system and why the quality is as it is.
Date: November 1972
Creator: Maclay, R. W.; Winter, T. C. & Bidwell, L. E.
Partner: UNT Libraries Government Documents Department

[James J. Hill on St. Paul's Summit]

Description: Photograph of the James J. Hill on St. Paul's Summit. The back of the photo reads, "The James J. Hill on S. Paul's Summit avenue will be the site of a reception and dinner during the OHA annual meeting."
Date: unknown
Creator: Oral History Association
Partner: UNT Libraries Special Collections

Digital Models of a Glacial Outwash Aquifer in the Pearl-Sallie Lakes Area, West-Central Minnesota

Description: From purpose and scope: The purpose of this investigation is to 1) study the hydrologic system in a glaciated terrain typified by numerous lakes, with particular focus on the effects of lake-ground-water interchange, 2) simulate the natural system by using two digital modeling methods--areal (map view) and vertical section, and 3) evaluate the utility of the models and determine the kinds and amount of basic data needed to obtain reasonable simulations.
Date: November 1975
Creator: Larson, Steven P.; McBride, Mark S. & Wolf, Ronald J.
Partner: UNT Libraries Government Documents Department

Ground Water for Irrigation in the Viking Basin, West-Central Minnesota

Description: Abstract: The Viking Basin consists of six glacial outwash areas in Douglas, Ottertail, and Todd Counties, west-central Minnesota. Total area is 340 square miles (880 square kilometers). Soils are sandy and excessively well-drained. Crops grown on the outwash would benefit from supplemental irrigation. Irrigation supplies can be obtained from wells in the surface outwash aquifer in significant parts of the large outwash areas near Carlos and Parkers Prairie and the small outwash area near Clotho. Irrigation supplies are unlikely in the outwash areas near Alexandria, Urbank, and Rose City. Major use of ground water for irrigation may lower ground-water levels sufficiently to affect lake and marsh levels and streamflow out of the irrigation areas. Water from the outwash is of excellent chemical quality for irrigation.
Date: October 1975
Creator: McBride, M. S.
Partner: UNT Libraries Government Documents Department

Hydrogeologic and Water-Quality Characteristics of the Mount Simon-Hinckley Aquifer, Southeast Minnesota

Description: From abstract: This report is one of a series on the hydrogeology and water quality of the 14 principal aquifers in Minnesota prepared by the U.S. Geological Survey. The U.S. Environmental Protection Agency requested these studies because of the need for information to develop its Underground Injection Control Program.
Date: 1983
Creator: Wolf, R. J.; Ruhl, J. F. & Adolphson, D. G.
Partner: UNT Libraries Government Documents Department

Fortran Computer Programs to Plot and Process Aquifer Pressure and Temperature Data

Description: From introduction: In this report, two programs have been developed for use in managing data derived from an aquifer thermal-energy storage (ATES) project being done by the University of Minnesota. Data are generated from temperature and pressure measuring devices that are read automatically by a datalogger. Up to 100 channels can be scanned every 10 seconds and recorded on magnetic tape or printed as paper output. Time period of up to several years of data may be represented on a single tape.
Date: 1983
Creator: Czarnecki, J. B.
Partner: UNT Libraries Government Documents Department

Hydrogeologic and Water-Quality Characteristics of the Prairie du Chien-Jordan Aquifer, Southeast Minnesota

Description: From abstract: This report is one of a series on the hydrogeology and water quality of the 14 principal aquifers in Minnesota prepared by the U.S. Geological Survey. The U.S. Environmental Protection Agency requested these studies because of the need for information to develop its Underground Injection Control Program.
Date: 1983
Creator: Ruhl, J. F.; Wolf, R. J. & Adolphson, D. G.
Partner: UNT Libraries Government Documents Department

Hydrogeologic Setting of the Glacial Lake Agassiz Peatlands, Northern Minnesota

Description: Abstract: Seven test holes drilled in the Glacial Lake Agassiz Peatlands indicate that the thickness of surficial materials along a north-south traverse parallel to Minnesota Highway 71 ranges from 163 feet near Blackduck, Minnesota to 57 feet about 3 miles south of Upper Red Lake. Lenses of sand and gravel occur immediately above bedrock on the Itasca moraine and are interbedded with lake clay and till under the peatlands. Vertical head gradients measured in a piezometer nest near Blackduck on the moraine are downward, indicative of recharge to the regional ground-water-flow system. Vertical head gradients are upward in a piezometer nest on a sand beach ridge in the peatlands 12 miles north of Upper Red Lake. Numerical sectional models indicate that this discharge probably comes from local flow systems recharge from ground-water mounds located under large raised bogs.
Date: July 1981
Creator: Siegel, D. I.
Partner: UNT Libraries Government Documents Department

Water Quality of Alignment, Farquar, and Long Lakes in Apple Valley, Minnesota

Description: Abstract: Alimagnet, Farquar, and Long Lakes, in Apple Valley, Minnesota, were sampled from 1973-79 to determine their physical and chemical characteristics. A storm-sewer inlet to Alimagnet Lake was also sampled during two storms in 1978. The 1976-77 drought caused a more noticeable effect on the quality of the lakes than any other factor. Chloride concentrations were 10 to 15 milligrams per liter before the drought, but increased 2 to 4 times during the drought. Dissolved solids reacted similarly . Dissolved oxygen and pH were governed mainly by biological activity. In February 1977, dissolved-oxygen concentration was less than 0.5 milligrams per liter in the three lakes. Ratios between mean total nitrogen and mean total phosphorus ranged from 22:1 to 26:1. Tropic-state indices indicate that the lakes are eutrophic. Blue-green algae dominated the phytoplankton populations. Storms sampled at a storm-sewer inlet to Alimagnet Lake showed higher concentrations pf chromium, copper, nickel, and zinc than of lead, arsenic, cadmium, and mercury. Total phosphorus for the September 1978 storm had a concentration of 1.7 milligrams per liter, which means that approximately 29 pounds entered the lake during the 5.5-hour sampling period.
Date: June 1981
Creator: Have, Mark R.; Payne, Gregory A. & Ayers, Mark A.
Partner: UNT Libraries Government Documents Department

Buried Aquifers in the Brooten-Belgrade and Lake Emily Areas, West-Central Minnesota -- Factors Related to Developing Water for Irrigation

Description: Purpose and scope: The purpose of this report is to determine, as far as possible, the occurrence of buried aquifers and to describe their hydrologic characteristics and water-yielding capability. The evaluation is based mainly on 44 test holes drilled specifically for this investigation. These test holes are too widely spaced to correlate individual aquifers. Such correlation must await more detailed closely spaced test drilling. Forty-two test holes were drilled in the Brooten-Belgrade area; hence the mapping is restricted to this part. Two test holes were drilled in the Lake Emily area, allowing only one geologic section to be presented. PIan-view mapping would require considerable additional test drilling.
Date: September 1976
Creator: Wolf, Ronald J.
Partner: UNT Libraries Government Documents Department

Hydrogeologic and Water-Quality Characteristics of the Upper Carbonate Aquifer in Minnesota

Description: Introduction: The U.S. Geological Survey began a study in 1980 of the quality of water in the 14 principal aquifers in Minnesota. The U.S. Environmental Protection Agency funded the study as part of the Underground Injection Control Program, which deals with disposal of liquid wastes beneath land surface. The initial report designated the 14 aquifers and provided general information about their geologic, hydrologic, and water-quality characteristics (Adolphson and others, 1981). This report, one in a series that describes individual aquifers in more detail, concerns the Upper Carbonate aquifer.
Date: 1984
Creator: Ruhl, J. F. & Wolf, R. J.
Partner: UNT Libraries Government Documents Department

Graphic and Analytical Methods for Assessment of Steam-Water Quality -- Mississippi River in the Minneapolis-St. Paul Metropolitan Area, Minnesota

Description: From Purpose and Objectives: This study was made primarily to provide a means to depict and forecast stream quality based on known causative or apparent correlative factors.
Date: July 1976
Creator: Larson, Steven P.; Mann, William B., IV; Steele, Timothy Doak & Susag, Russell H.
Partner: UNT Libraries Government Documents Department

Hydrogeologic and Water-Quality Characteristics of the St. Peter Aquifer, Southeast Minnesota

Description: From abstract: This report is one of a series on the hydrogeology and water quality of the 14 principal aquifers in Minnesota prepared by the U.S. Geological Survey. The U.S. Environmental Protection Agency requested these studies because of the need for information to develop its Underground Injection Control Program.
Date: 1983
Creator: Ruhl, J. F. & Wolf, R. J.
Partner: UNT Libraries Government Documents Department

Water Quality of Four Lakes in Lakeville, Minnesota

Description: From abstract: This report presents data collected from four lakes in Lakeville, Minnesota to determine water-quality characteristics and evaluate "changes that may occur in the lakes because of urbanization." It contains a map, graphs, tables, and a glossary.
Date: July 1980
Creator: Tornes, Lan H. & Have, Mark R.
Partner: UNT Libraries Government Documents Department

Preimpoundment Water Quality of the Wild Rice River, Norman County, Minnesota

Description: From abstract: This report uses water samples collected from two sites at the Wild Rice River in Minnesota to "establish baseline water-quality characteristics before construction of a reservoir near Twin Valley, Minnesota for recreation and flood control." It contains a map, graphs, and tables.
Date: June 1980
Creator: Tornes, Lan H.
Partner: UNT Libraries Government Documents Department

Low-Flow Characteristics of Minnesota Streams

Description: From introduction: This report summarizes data currently available to obtain low-flow characteristics for Minnesota streams. The data include expected annual low-flows for specific recurrence intervals at 161 continuous-record gaging stations.
Date: March 1977
Creator: Lindskov, K. L.
Partner: UNT Libraries Government Documents Department