Welcome to Minds @ UW

About This Item

IMPACT OF RAINFALL ON ESCHERICHIA COLI CONCENTRATIONS AT BEACHES IN DOOR COUNTY, WISCONSIN

Show full item record

File(s):

Author(s)
Griesbach, Amanda M.
Advisor(s)
Kleinheinz, Greg
Degree
MS
Date
Apr 2013
Subject(s)
Escherichia coli - Environmental aspects - Door County, Wisconsin; Beach closures - Wisconsin - Door County; Water pollution; Rain and rainfall - Wisconsin - Door County
Abstract
Rainfall and its associated storm water runoff have been associated with transport of many pollutants into beach water. Fecal material, from a variety of animals (humans, pets, livestock, and wildlife), can wash into beach water following rainfall and result in microbial contamination of the beach. Many locales around the world issue pre-emptive beach closures associated with rainfall. This study looked at eight beaches located in Door County, Wisconsin, on Lake Michigan to determine the impact of rainfall on E. coli concentrations in beach water. Water samples were collected from beach water and storm water discharge pipes during rainfall events of 5 mm in the previous 24 hours. Six of the eight beaches showed a significant association between rainfall and elevated beach water E. coli concentrations. The duration of the impact of rainfall on beach water E. coli concentrations was variable (immediate to 12 hours). Amount of rainfall in the days previous to the sampling did not have significant impact on the E. coli concentrations measured in beach water. Presence of storm water conveyance pipes adjacent to the beach did not have a uniform impact on beach water E. coli concentrations. This study suggests that each beach needs to be examined on its own with regard to rain impacts on E coli concentrations in beach water.
Description
A Thesis Submitted In Partial Fulfillment of the Requirements For the Degree of Master of Science-Biology Microbiology
Permanent link
http://digital.library.wisc.edu/1793/66227 
Export
Export to RefWorks 

Part of

Show full item record



Advanced Search

Browse

Deposit materials

About MINDS@UW