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At least 1,261 records · Page 70Linked to original sources
USGS1974

Water resources of the Rum River Watershed, east-central Minnesota

The Rum River, a tributary of the Mississippi River, drains an elongate area of about 1,550 square miles. The source of the Rum River is Mille Lacs Lake. Much of the northern half of the watershed is forested, and there are large areas of swampland. Population is most concentrated in the southern half, where agriculture is the dominant economic activity. Except for scattered Precambrian igneous rock outcrops in the central third of the watershed, bedrock is covered by glacial drift. In the southern third, the drift includes considerable amounts of outwash and is directly underlain by Cambrian and Precambrian sedimentary rocks. Greatest topographic relief is in morainal areas around Mille Lacs Lake. The central third of the watershed slopes gradually southward, grading into the relatively flat area of surficial outwash.

Minnesota↗
USGS1973

Flood of June 9-10, 1972, at Rapid City, South Dakota

Rapid City, the second largest city in South Dakota, is located at the eastern edge of the Black Hills about 9 miles downstream from Pactola Dam. It is bisected laterally by Rapid Creek, and longitudinally by the eastern flank of the Black Hills. Canyon Lake, a samll recreation reservior having a surface area of 35 to 40 acres, is located near the west city limits on Rapid Creek. The floods of June 9-10, 1972, covered a relatively small area of the eastern hills, extending from Sturgis on the north to Hermosa on the south and the west to Pactola Dam. THe area is mountainous with very steep heavily wooded slopes. Channels are shallow and generally are confined in narrow, winding canyons.

South Dakota↗
USGS1976

Water resources of the Bighorn basin, northwestern Wyoming

This 2-sheet map report includes the part of the Bighorn Basin and adjacent mountains in northwestern Wyoming. Water-bearing properties of the geologic units are summarized. The hydrogeologic map illustrates the distribution of wells in the different units and gives basic data on the yields of wells, depth of wells, depth to water, and dissolved solids and conductance of the water. Aquifers capable of yielding more than 1,000 gpm (gallons per minute) underlie the area everywhere, except in the mountains on the periphery of the basin. In 1970, approximately 29,500 of the 40,475 people living in the Bighorn Basin were served by municipal water supplies. The municipal supply for about 6,300 of these people was from ground water. The natural flows of streams in the Bighorn Basin differ greatly due to a wide range in the meteorologic, topographic, and geologic conditions of the basin. The station locations and the average discharge per square mile are shown on the map and give an indication of the geographic variation of basin yields. The maximum instantaneous discharge that has occurred at each station during its period of record is shown. Most of the runoff in the basin is from snowmelt in the mountains.

Wyoming↗
USGS1974

Water resources of Hamilton County, southwestern Kansas

According to records of the National Weather Service (formerly the U.S. Weather Bureau) for a station near Syracuse, the average annual precipitation in Hamilton County is about 16 inches. Of this amount, 83 percent occurs during the growing season (March 15 to October 15). A part of the precipitation runs off as surface flow, part is evaporated, part is used by vegetation, and a small part percolates downward to recharge the ground-water reservoir. The average recharge from precipitation for Hamilton County is estimated to be 0.1 inch per year. Owing to the limited supply of water in most of the upland area of the county, dryland farming and grazing are the predominant land uses.

Kansas↗
USGS1974

Water resources of the Cannon River watershed, southeastern Minnesota

The 1,462 square miles of land surface in the Cannon River watershed varies considerably from areas of low hills and plains to areas dominated by streams deeply incised into bedrock. Much of the south-central part of the area consists of a till plain that ranges in altitude from 1,100 to 1,200 feet above mean sea level. This plain is bordered by end moraines that form ridges on the east, west, and south. The eastern moraine marks the maximum eastward extend of the Wisconsin glacier, rising to more than 1,300 feet above sea level and forming ridges 50 to 100 feet above the till plain. In the northwest, the end moraine ridges are less obvious but extend directly north across the Cannon River valley. The end moraine ridges were cut by glacial melt water, which also deepened the pre-existing Cannon River valley. This deeply incised valley captures some of the streams that flow westward off the end moraines. East of the end moraines, pre-Wisconsin age glacial deposits are relatively thin and deeply weathered and eroded. Lard glacial melt-water valleys, around Cannon Falls and extending several miles to the west and south west, are characterized by broad valley floors underlain by outwash sand and gravel. The Cannon River flows out of the watershed and enters the Mississippi River at about 660 feet altitude.

Minnesota↗