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عدد المساهمات : 121 نقاط : 338 تاريخ التسجيل : 22/10/2011
| موضوع: Cone of Depression الأحد ديسمبر 23, 2012 7:43 am | |
| Definition The depression of hydraulic head around a pumping borehole caused by the withdrawal of water. Description The cone-shaped area around a borehole that results from the lowering of the water table or piezometric surface by abstraction. Why is the cone of depression important? The cone of depression defines the area of influence of a borehole. | |
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