Handbook of engineering hydrology 3. Environmental hydrology by Saeid Eslamian
By Saeid Eslamian
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Extra resources for Handbook of engineering hydrology 3. Environmental hydrology and water management
This holds in particular for recharge by means of recharge wells, in order to avoid clogging of these wells. Apart from pretreatment of the water for recharge, the rate of recharge per well should be limited. Despite pretreatment of the water, the capacity of the recharge wells decreases during operation. Therefore, regeneration of the recharge wells is needed from time to time. Due to intensive research, much progress has been made both with respect to the pretreatment required for water of different quality and with respect to the techniques of regeneration.
As in case of other water-spreading methods, the source water used should be as silt-free as possible. In case of hard-rock terrain, a canal bed section crossing permeable strata of weathered fractured rock or the canal section coinciding with a prominent lineament or intersection of two lineaments forms ideal sites for canal trench. In case poorly permeable strata overlie the water table aquifer located deep below land surface, a shaft is used for causing AR. A recharge shaft is similar to a recharge pit but much smaller in cross section.
Nairobi, Kenya: United Nations Environment Program (UNEP). 49. Van Tonder, D. 2008. Regional Mine Closure Strategy for the Far West Rand Goldfield. Council for Geosciences Report No. 2008–0248. Pretoria, South Africa: Department of Minerals and Energy. Anthropocenic Aquifer: New Thinking 15 50. Van Tonder, D. and Coetzee, H. 2008. Regional Mine Closure Strategy for the West Rand Goldfield. Council for Geosciences Report No. 2008–0175. Pretoria, South Africa: Department of Minerals and Energy. 51.