Sediment and Fecal Indicator Bacteria Loading in a Mixed Land Use Watershed: Contributions from Suspended Sediment and Bedload Transport

Author(s):  
J. Kenneth Bradshaw ◽  
Blake Snyder ◽  
David Spidle ◽  
Roy C. Sidle ◽  
Kathleen Sullivan ◽  
...  
2019 ◽  
Vol 5 (12) ◽  
pp. 2108-2123
Author(s):  
Sarah Phelan ◽  
Disha Soni ◽  
William R. Morales Medina ◽  
N. L. Fahrenfeld

Fecal indicator bacteria are commonly used to evaluate water quality and make decisions on designating and restricting use.


2018 ◽  
Vol 47 (5) ◽  
pp. 1115-1122 ◽  
Author(s):  
Minjeong Kim ◽  
Laurie Boithias ◽  
Kyung Hwa Cho ◽  
Oloth Sengtaheuanghoung ◽  
Olivier Ribolzi

2010 ◽  
Vol 9 (2) ◽  
pp. 279-290 ◽  
Author(s):  
Liesl Tiefenthaler ◽  
Eric D. Stein ◽  
Kenneth C. Schiff

Routine stormwater monitoring programs focus on quantification of average fecal indicator bacteria (FIB) concentration at the terminal watershed discharge point. While important for permit compliance, such monitoring provides little insight into relative bacteria levels from different land use types or the mechanisms that influence FIB concentrations. The goal of this study was to quantify the relative levels and flux patterns of Escherichia coli, enterococci, and total coliforms from representative land use (LU) types. Bacteria concentrations were measured over the entire storm duration from 8 different LU types over 13 storm events in 5 southern California watersheds during the 2000–2005 storm seasons. In addition, runoff samples were collected from 8 bottom of the watershed mass emission (ME) sites. Intra-storm and intra-season patterns were investigated in order to identify mechanisms that influence patterns of FIB concentrations. Mean FIB event mean concentrations (EMCs) at LU sites ranged from 103 to 105 MPN/100 ml. Recreational (horse stables) LU sites contributed significantly higher storm EMCs than other LU types. Early season storms repeatedly produced higher EMCs than comparably sized late season storms. For most storms sampled, the highest bacterial concentrations occurred during the early phases of stormwater runoff with peak concentrations usually preceding peak flow.


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