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Reservoir Inflow Monitoring for Improved Management of Treated Water Quality—A South Australian Experience

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  • Peter Hobson
  • Rolando Fabris
  • Emily Develter
  • Leon Linden
  • Michael Burch
  • Justin Brookes

Abstract

Large tributary inflows into water supply reservoirs caused by heavy catchment rain may be of concern due to problems associated with high levels of natural organic matter (NOM) present in the inflows. The movement of these inflows within a reservoir is dependent on its relative density to the receiving waters. For example, if the inflow is denser (colder) than the recipient water it will travel along the base of the reservoir as an underflow and can penetrate as far as the dam wall water off-take to a water treatment plant (WTP). Field studies were conducted to track the passage of underflows through two South Australian reservoirs, Little Para and Myponga. Samples were collected before and during storm event inflows and analyses undertaken to determine NOM concentration, alum demand, disinfection by-product formation potential, and quality of the water. We demonstrate that by monitoring the movement of inflows into reservoirs, combined with changes in reservoir off-take levels, that the risk of NOM entering a water treatment plant can be reduced which in turn will lower water treatment costs by reducing alum dosing levels and lessen the risk to human health by reducing disinfection by-product formation. Copyright Springer Science+Business Media B.V. 2010

Suggested Citation

  • Peter Hobson & Rolando Fabris & Emily Develter & Leon Linden & Michael Burch & Justin Brookes, 2010. "Reservoir Inflow Monitoring for Improved Management of Treated Water Quality—A South Australian Experience," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 24(14), pages 4161-4174, November.
    • Handle: RePEc:spr:waterr:v:24:y:2010:i:14:p:4161-4174
    DOI: 10.1007/s11269-010-9651-7
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    References listed on IDEAS

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    1. Chun-hsu Lin & Te-hsiu Huang & Daigee Shaw, 2010. "Applying Water Quality Modeling to Regulating Land Development in a Watershed," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 24(4), pages 629-640, March.
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    Cited by:

    1. Ali Assani & Raphaëlle Landry & Jonathan Daigle & Alain Chalifour, 2011. "Reservoirs Effects on the Interannual Variability of Winter and Spring Streamflow in the St-Maurice River Watershed (Quebec, Canada)," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 25(14), pages 3661-3675, November.
    2. C. Roberts & E. Inniss, 2014. "Implementing Treatment Sequences to Promote Reduction of DBPs in Small Drinking Water Systems," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 28(6), pages 1631-1643, April.
    3. Bo Xiao & Shicheng Zhang & Tiankui Guo & Tong Zhou, 2014. "Experimental Investigation and Performance Evaluation of a Novel High Temperature Tolerant Seawater-based Fracturing Fluid," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 28(10), pages 2767-2779, August.

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