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Flow Analysis through Collector Well Laterals: A Case Study from Sonoma County Water Agency, California

Nebraska Water Center, University of Nebraska Lincoln, Lincoln, NE 68588-6204, USA
ERM, Inc., 1277 Treat Boulevards, Walnut Creek, CA 94597, USA
Bennet & Williams Environmental Consultants, Inc., 98 County Line Road West, Westerville, OH 43082, USA
Sonoma County Water Agency, 404 Aviation Blvd, Santa Rosa, CA 95403, USA
Author to whom correspondence should be addressed.
Water 2018, 10(12), 1848;
Received: 3 November 2018 / Revised: 27 November 2018 / Accepted: 1 December 2018 / Published: 13 December 2018
(This article belongs to the Special Issue Efficiency of Bank Filtration and Post-Treatment)
PDF [4723 KB, uploaded 13 December 2018]


The Sonoma County Water Agency (SWCA) uses six radial collector wells along the Russian River west of Santa Rosa, to provide water for several municipalities and water districts in north-western California. Three collector wells (1, 2, and 6) are located in the Wohler area, and three collector wells (3, 4, and 5) are located in the Mirabel area. The objective of this paper is to highlight the performance of the three collector wells located in the Mirabel area since their construction. The 2015 investigation showed a lower performance of Collectors 3 and 4 compared to their original performances after construction in 1975, while the performance of Collector 5 was relatively stable since 1982. The potential change in capacity could be due to the increase in encrustation observed during the visual inspection of laterals in all three collector wells. Overall, the three collectors are still within the optimal design parameters (screen entrance velocity < 0.305 m min−1 and axial flow velocity of lateral screens < 1.524 m s−1). View Full-Text
Keywords: riverbank filtration; collector wells; performance; entrance velocity riverbank filtration; collector wells; performance; entrance velocity

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D’Alessio, M.; Lucio, J.; Williams, E.; Warner, J.; Seymour, D.; Jasperse, J.; Ray, C. Flow Analysis through Collector Well Laterals: A Case Study from Sonoma County Water Agency, California. Water 2018, 10, 1848.

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