PLAN341 Chapter Notes - Chapter 7: Walkerton E. Coli Outbreak, Urban Land, Capillary Fringe
27 May 2016
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Groundwater, urban land use, & aquifer protection ch7 land dictates land use. Diagram; some rivers discharge into the ground, others start from discharges in the ground. Deeper we go, water takes more time to go down except where bedrock is cracked. 30-40k yrs old water can be at the very bottom rain water can take hours/days to go through soil back into river saturated vs unsaturated zones (capillary fringe detail) Urban systems usually have low water tables consequently, imp to understand landscape/groundwater relationships. Water cleaning is expensive important to know recharge zones. Untreated water from streams/lakes/rivers/gw (groundwater) used for public and private drinking system sources: surface water, gw. Outbreaks of waterborne diseases, identification of gw contamination and numerous boil water advisories (poor water quality increases pathogens, makes them more dangerous) Easy to contaminate source water (gw) but consequences are often severe and costly (contaminates fast but takes very long to become potable again)
