Modeling microbial water quality at a beach impacted by multiple nonpoint sources

Zhixuan Feng, Ad Reniers, Brian K Haus, Helena M Solo-Gabriele, Laura Fiorentino, Maria J Olascoaga, Jamie MacMahan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Monitoring microbial water quality is essential for recreational beaches in order to protect human health. To evaluate the relative importance and impacts of various types of non-point microbial sources at a subtropical beach (Hobie Beach, Miami, USA), we utilized a coastal ocean circulation model (Delft 3D) with a microbe transport-fate model. Those non-point sources include beach sediment, dog feces, bather shedding, and rainfall runoff. The hydrodynamic model results agreed well with tidal elevations recorded by a nearby NOAA tidal station and also field data collected by pressure sensors, acoustic Doppler current profiler (ADCP). We modeled enterococci levels from four different types of non-point sources on the beach and Staphylococcus aureus levels from only the bather shedding. Model results suggest that dog feces are spotty sources of enterococci and can result in transient spikes of enterococci levels for hours. Beach sands are pervasive sources of enterococci and may explain observed persistent elevations of enterococci levels at this site. Runoff may also significantly increase enterococci levels during rainfall events while bather shedding contribution of enterococci is almost negligible. Bather is the only Staphylococcus aureus source considered in the study and simulated levels are in the same order as prior field measurements.

Original languageEnglish
Title of host publicationProceedings of the Coastal Engineering Conference
StatePublished - Dec 1 2012
Event33rd International Conference on Coastal Engineering 2012, ICCE 2012 - Santander, Spain
Duration: Jul 1 2012Jul 6 2012

Other

Other33rd International Conference on Coastal Engineering 2012, ICCE 2012
CountrySpain
CitySantander
Period7/1/127/6/12

Fingerprint

Beaches
Water quality
beach
water quality
modeling
Runoff
feces
Rain
runoff
rainfall
Acoustic Doppler Current Profiler
Pressure sensors
Sediments
Sand
Hydrodynamics
Acoustics
hydrodynamics
Health
sensor
sand

Keywords

  • Delft 3D
  • Enterococci
  • Non-point source
  • Recreational beach
  • Staphylococcus aureus
  • Water quality

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Ocean Engineering
  • Oceanography

Cite this

Feng, Z., Reniers, A., Haus, B. K., Solo-Gabriele, H. M., Fiorentino, L., Olascoaga, M. J., & MacMahan, J. (2012). Modeling microbial water quality at a beach impacted by multiple nonpoint sources. In Proceedings of the Coastal Engineering Conference

Modeling microbial water quality at a beach impacted by multiple nonpoint sources. / Feng, Zhixuan; Reniers, Ad; Haus, Brian K; Solo-Gabriele, Helena M; Fiorentino, Laura; Olascoaga, Maria J; MacMahan, Jamie.

Proceedings of the Coastal Engineering Conference. 2012.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Feng, Z, Reniers, A, Haus, BK, Solo-Gabriele, HM, Fiorentino, L, Olascoaga, MJ & MacMahan, J 2012, Modeling microbial water quality at a beach impacted by multiple nonpoint sources. in Proceedings of the Coastal Engineering Conference. 33rd International Conference on Coastal Engineering 2012, ICCE 2012, Santander, Spain, 7/1/12.
Feng Z, Reniers A, Haus BK, Solo-Gabriele HM, Fiorentino L, Olascoaga MJ et al. Modeling microbial water quality at a beach impacted by multiple nonpoint sources. In Proceedings of the Coastal Engineering Conference. 2012
Feng, Zhixuan ; Reniers, Ad ; Haus, Brian K ; Solo-Gabriele, Helena M ; Fiorentino, Laura ; Olascoaga, Maria J ; MacMahan, Jamie. / Modeling microbial water quality at a beach impacted by multiple nonpoint sources. Proceedings of the Coastal Engineering Conference. 2012.
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