Urban Groundwater, Meeting the Challenge : IAH Selected by Ken W.F. Howard

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By Ken W.F. Howard

This ebook specializes in demanding situations in city groundwater, largely considered as a significant international factor. subject matters lined are broad and variety from the city water stability and emerging groundwater degrees to groundwater illness and the function of aquifer modelin.

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International Association of Hydrological Sciences, Publication No 269, p 43–50. , Hutcheon, I. R. 1997. Application of the stable isotope composition of SO4 to tracing anomalous TDS in Nose Creek, southern Alberta, Canada. Applied Geochemistry, v 12, p 567–575. , Piechniczek, K. and Fischer, T. 1996. Urban groundwater in Dresden, Germany. Hydrogeology Journal, v 4, p 48–63. M. Jr. E. 1999. Interpreting flow using permeability at multiple scales. In Palmer AR, Palmer MV and Sasowsky ID (eds) Karst Modeling.

G. , 1993) with a daily soil moisture balance. This method uses root constants and wilting points to account for different crops and soil types. A proportion of the impervious cover should be treated as permeable, as some infiltration does take place through asphalt, concrete, bricks etc. According to Lerner (2002) roughly 50% of the impervious cover should be treated as permeable. 2 Indirect recharge Indirect recharge is the sum of the recharge coming from seepage out of surface water bodies, leakage from water mains, wastewater and storm sewers, and on-site sanitation systems.

G. , 2003) and indicate that leakage from sewers is common and widespread. When sewer lines are located below the water table, they may infiltrate groundwater, and when located above the water table they may leak. Because flows in these pipes are not under pressure, it is reasonable to assume they leak less than water mains. Many cities lack sewerage networks and rely on septic tanks or similar systems to dispose of grey water. , 1994). Albeit scarce within the literature, increasing efforts have recently been made to quantify wastewater leakage from sewers.

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