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Water 2017, 9(2), 119;

Maximizing Infiltration Rates by Removing Suspended Solids: Results of Demonstration Testing of Riverbed Filtration in Orange County, California †

Orange County Water District, 18700 Ward Street, Fountain Valley, CA 92708, USA
Geosystems Analysis, Inc., 3393 N. Dodge Blvd, Tucson, AZ 85716, USA
Author to whom correspondence should be addressed.
Academic Editor: Pieter Stuyfzand
Received: 1 December 2016 / Revised: 23 January 2017 / Accepted: 3 February 2017 / Published: 14 February 2017
(This article belongs to the Special Issue Water Quality Considerations for Managed Aquifer Recharge Systems)
View Full-Text   |   Download PDF [5130 KB, uploaded 14 February 2017]   |  


Clogging due to the accumulation of suspended solids is a major constraint that limits the capacity of Orange County Water District’s (OCWD) surface water recharge system. In order to decrease clogging and increase system capacity, OCWD is testing the ability of riverbed filtration to reduce suspended solids concentrations and improve recharge rates. Riverbed filtration is achieved through a shallow subsurface collector system placed approximately one meter below the surface. Filtered water from the collector system is conveyed by gravity to the receiving recharge basin. Initial results show that riverbed filtration is highly effective in removing suspended solids in the recharge water, which in turn also greatly increases the recharge capacity of the receiving basin. Some other water quality benefits are also achieved. Data collected thus far indicate that it will be cost-effective to use this approach at a larger scale to capture and recharge increased quantities of storm flow obtained from the Santa Ana River. View Full-Text
Keywords: recharge basin; riverbed filtration; clogging; pretreatment recharge basin; riverbed filtration; clogging; pretreatment

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Hutchinson, A.S.; Rodriguez, G.; Woodside, G.; Milczarek, M. Maximizing Infiltration Rates by Removing Suspended Solids: Results of Demonstration Testing of Riverbed Filtration in Orange County, California †. Water 2017, 9, 119.

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