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Bedrock Geology and Surface Processes in Wanapum Recreation Area

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According to the research, the geologists determined the Frenchmans Spring member of Wanapum basalt formation, Columbia River basalt group from 17 sites through anomalous paleomagnetic in my project area, which is Wanapum Recreation Area, located near Vantage, Washington. (Sheriff, 398) And also, there are have another member during the middle Miocene, such as Roza Member, Eckler Mountain Member. The Frenchmans Springs member is the most extensive member of the Wanapum basalt formation. The mainstream is Sand Hollow-Columbia River in my project area. It is a straight channel of a stream channel. The Columbia River is a perennial stream.

It is a V-shaped and flows from north to south. And its drainage pattern is a trellis. Its stream flows would increase in the winter and would decrease in the summer. But the flows have changed relatively little for several years. The primary aquifers of the CPRAS are the Columbia River basalt group (CRBG) and overlying basin-fill sediments. There is one aquifer is confined, which is fractured basalts, and unfeatured basalt made by overlying basin-fill sediments. The confining layer is unfeatured basalt. The aquifer is made of both fractured basalt and unfeatured basalt.

According to the research, my project area as belonging to the Wanapum hydrogeologic unit, and it is composed mostly of basalt and interbed members of the Wanapum basalt is in most of the north-central part of the project area. I selected the nearest city to my project area to determine the water use, which is the city of Yakima, WA. Its main drinking water is from groundwater. According to the sources, written by KE Gibson and KJ Schwab, its water mainly for the agricultural.

The city of Yakima has a history of GW and SW pollution issues around lower Yakima Valley, it caused by the nonpoint agricultural runoff of land-applied animal wastes and inorganic fertilizers, such as bovine’ s wastes. In my opinions, it is a potential issue in the future development of water use in the Yakima area. There are have glacier valley in the vicinity.

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preview essay on Bedrock Geology and Surface Processes in Wanapum Recreation Area
  • Pages: 6 (1500 words)
  • Document Type: Essay
  • Subject: Geography
  • Level: College
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