USGS Science⌕ Search

Geology topics

Ronald G. Borman

Publications and source records attributed to Ronald G. Borman.

At least 19 recordsLinked to original sources
USGS1984

Geology, altitude, and depth of the bedrock surface; altitude of the water table in 1980; and saturated thickness of the Ogallala aquifer in 1980 in the southern High Plains of Colorado

The southern High Plains of Colorado, an area of about 2,800 square miles in the southeastern part of the state, is underlain by the Ogallala Formation of late Tertiary age, The southern High Plains of Colorado extend from the Colorado State line on the east and the ans south to the edge of the Ogallala Formation on the north and west. The Ogallala Formation is an unconsolidated or partly consolidated seposit of sand, gravel, clay silt, and caliche.

Colorado↗
USGS1982

Generalized altitude and configuration of the water table in parts of Larimer, Logan, Sedgwick, and Weld Counties, Colorado

The water table in parts of Larimer, Logan, Sedgwick, and Weld Counties, Colorado ranges from about 7,000 feet above the National Geodetic Vertical Datum of 1929 (formerly called mean sea level) in eastern Larimer County to about 3,450 feet in northeastern Sedgwick County. Water is moving to the south and southeast in much of the study area. (USGS)

Water-Resources Investigations Report↗
USGS1981

Effects of a cattle feedlot on ground-water quality in the South Platte River Valley near Greeley, Colorado

Changes in water quality in an alluvial aquifer resulting from the operation of a feedlot stocked with 90,000 cattle have been minimal. Monitoring water quality in 19 observation wells from April 1974, prior to the operation of the feedlot, to June 1978, after about 4 years of operation, indicates that chloride concentrations have increased slightly in one well downgradient from a runoff-retention pond. Chemical analyses of water from two lysimeters installed in the unsaturated zone indicate that leachate from the feedlot has percolated to a depth of at least 5 feet but has not percolated to a depth of 20 feet. The small changes in ground-water quality caused by the feedlot are likely the result of the limited available recharge, a relatively impermeable manure pack, soil clogging under the cattle pens resulting in slow vertical movement of leachate through the unsaturated zone, soil clogging under the unlined runoff-retention ponds, and denitrification in the unsaturated zone.

Colorado↗
USGS1978

Water-level records for the northern High Plains of Colorado, 1974-78

Water-level measurements were made in more than 600 wells in January 1978 in the northern High Plains of Colorado. Changes in water levels from January 1977 to January 1978 ranged from a rise of about 22 feet in Phillips County to a decline of about 14 feet in Yuma County. Measurements for January 1978 and the four preceding winters are given in a table.

Colorado↗
USGS1978

Ground-water resources and geology of Columbia County, Wisconsin

The increasing need for water of good Quality in Columbia County, caused by a steadily increasing population, can be met from the sand-and-gravel and sandstone aquifers. As much as 15 gallons per minute can be obtained from wells almost everywhere. Yields of more than 1,000 gallons per minute are available from drift where it contains a sufficient thickness of saturated sand and gravel (the sand-and-gravel aquifer). The sandstone aquifer underlies nearly all the county except for areas west of the Wisconsin River and northwest of Pardeeville. It is more than 700 feet thick in the south-central part. The sandstone aquifer includes all bedrock younger than Precambrian age and is capable of yielding more than 1,000 gallons per minute to wells in about three-fourths of the county. It is the principal source of municipal-water supply. The chemical quality of water from the two aquifers is similar. It is very hard (mean concentration of about 300 milligrams per liter as calcium carbonate), and much of it contains excessive amounts of iron and manganese. Concentrations of dissolved solids and chloride are higher in areas underlain by bedrock of Ordovician age than elsewhere. About 5.0 million gallons per day of water was pumped in the county in 1974, 90 percent from the sandstone aQuifer. About 45 percent of the total water pumped was for industrial and commercial purposes~ 37 percent was for residential use, 16 percent for municipal use, and 2 percent for irrigation.

Wisconsin↗
USGS1977

Water-level records for the northern High Plains of Colorado, 1973-77

Water-level measurements were made in more than 600 wells during January 1977 in the northern High Plains of Colorado which includes about 9,500 square miles. Most of these wells were irrigation wells, but several stock and government-owned wells were also measured, especially in areas where there is little irrigation. Changes in water levels from January 1976 to January 1977 ranged from a rise of about 12 feet (3.7 meters) to a decline of about 10 feet (3 meters), both of which occurred in Kit Carson County. Measurements for the four preceding winters also are included to serve as references illustrating declining or rising water levels. (Woodard-USGS)

Open-File Report↗
USGS1977

Water-level changes in the northern high plains of Colorado, 1964 to 1976 and 1972 to 1976

The northern High Plains of Colorado is an area of about 9,500 mi 2 (24,600 km 2 ) in the eastern part of the State (index map). The boundaries of the High Plains of Colorado are the State line and the limit of the Ogallala Formation of late Tertiary age. The Ogallala Formation is an unconsolidated or partly consolidated deposit of sand, gravel, clay, and silt and is the major aquifer in the northern High Plains.

Colorado↗