Earth Sciences 2281A/B Lecture Notes - Lecture 2: Capillary Fringe, Vadose Zone, Aeration
26 Mar 2019
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The thing that stores it and then omves it to the rivers and the lakes when it needs to be there" Rate of exchange = amount of time required to replace the water now stored in the reservoir . "how long with would take to replace an entire volume, once" It has a rate of exchange of 100 000 years. Lake erie completely replaces itself every 7 years. This shit is important to know if we contaminate lakes. How long it will be to get fixed. Therefore the cycle of replacement for groundwater is 280 years versus 7 years for lakes and. Obviously these are global averages and times will vary from one region to another contamination of reservoirs. Percentage of the population that relies on groundwater for drinking water: canada approx. Kitchener-waterloo, winnipeg, guelph examples of major cities on groundwater. Water tables are the level below which the ground is saturated with water.
