Read the article on Salt water intrusion by linking to http://americancityandcou

Question

Read the article on Salt water intrusion by linking to http://americancityandcounty.com/mag/government_saltwater_intrusion_floridas/, research the topic further, then post responses to the following: 1) Discuss how salt water can contaminate freshwater wells taking into consideration the mechanism of contamination and location of the wells. 2) Using appropriate examples, explain why this is a problem. 3) Identify to whom and when (or why) can salt water intrusion become a serious problem for coastal or interior South Florida.

Explanation / Answer

1. Basically, intrusion of saltwater is due to the overdraft of fresh water from the reservoir especially near the coastal regions. As the cone of depression forms by withdrawal of water, it it occupied by neighbourhood salt water and thus it contaminates the whole freshwater reservoir.

2. For example, in Broward County, where the problem is particularly acute, the population grew by more than 200,000 people between 1980 and 1990 and is expected to increase by another half-million by 2010. According to the county's water management division, residents use an average of 200 gallons per person per day; that means water use went up by more than 14.5 billion gallons per year last decade and will increase by more than twice that in the next 15 years.

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