Transcription of Water Well Design and Construction
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Water Well Design and Construction
In partnership Farm Water Quality PlanningA Water Quality and Technical Assistance Program for California REFERENCE SHEET is part ofthe Farm Water QualityPlanning (FWQP) series,developed for a short coursethat provides training for grow-ers of irrigated crops who areinterested in implementingwater quality protection prac-tices. The short course teachesthe basic concepts of Water -sheds, nonpoint source pollution(NPS), self-assessment tech-niques, and evaluation tech-niques. Management goals andpractices are presented for avariety of cropping : Water well Design andConstruction THOMAS HARTER is UC Cooperative Extension Hydrogeology Specialist at the University ofCalifornia, Davis, and Kearney Agricultural well BASICSA Water well is a hole, shaft, or excavation used for the purpose of extractingground Water from the subsurface. Water may flow to the surface naturally after exca-vation of the hole or shaft. Such a well is known as a flowing artesian well .
The annular space between the well screen, well casing, and borehole wall is filled with gravel or coarse sand (called the gravel packor filter pack). The gravel pack prevents sand and fine sand particles from moving from the aquifer forma-tion into the well. The gravel pack does not exclude fine silt
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