GEOG 2EI3 Lecture Notes - Lecture 4: Hydraulic Conductivity, Aquifer, Subsidence
Document Summary
Ground water movement: hydraulic conductivity, ability of earth materials to all materials to allow to move though, need porosity and permeability. Wells: the water level in wells coincides with the water table. Groundwater recharge and discharge: how does the water get into the ground and move around, recharge zone how the water gets into the ground, discharge zone where the water comes outs. Important to take care of this water resource because this is a source of water. Risks associated with groundwater pumping: ground water mining can lead to subsidence, water is removed from the pores between grains. T(cid:396)agedy(cid:863: pathogenic microbes e. g. fecal coliform bacteria, billions exposed to waterborne diseses, especiall countires, but outbreaks do occur in developed countires, aquifer was between limestone, which had large gaps. Woburn: problem with dirnking water, 2 new wells in the town but were contaminated by toxic waste from industry, people at risk from showering.
