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WRRCPR No.94-07 Impact of Kawainui Canal on the Recreational Water Quality of Kailua Bay (KB-4)

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Title:WRRCPR No.94-07 Impact of Kawainui Canal on the Recreational Water Quality of Kailua Bay (KB-4)
Authors:Ahuna, Lina
Fujioka, Roger
Keywords:fecal indicator bacteria
recreational water quality standards
Kawainui Canal
Kailua Bay
show 3 moreHawaii
microbiological studies
water quality
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LC Subject Headings:Kailua Bay (Oahu, Hawaii)
Water quality -- Hawaii -- Oahu.
Marine pollution -- Hawaii -- Oahu.
Freshwater microbiology -- Hawaii -- Oahu.
Date Issued:Oct 1993
Publisher:Water Resources Research Center, University of Hawaii at Manoa
Citation:Ahuna L, Fijioka R. 1993. Impact of Kawainiu Canal on the recreational water quality of Kailua Bay (KB-4). Honolulu (HI): Water Resources Research Center, University of Hawaii at Manoa. WRRC project report, 94-07.
Series:WRRC Project Reports
Abstract:The microbiological criteria for recreational water quality have been directed toward the protection of water users from possible microbial pollution which may pose public health hazards. In Hawaii, all streams are classified as recreational waters. Elevated concentrations of indicator bacteria recovered in Oahu's streams that do not receive sewage or other wastewater effluents and discharges indicate, by present standards, that they are polluted with sewage and pose public health hazards. However, environmental sources of fecal bacteria, such as soils and plants, and fecal sources of non-human origins, such as animals, commonly occur in the environment and appear to be responsible for the elevated concentrations of bacteria found in streams, during both wet and dry weather conditions. High concentrations of bacteria recovered in the upper watershed of Maunawili and the Kawainui Marsh and Canal suggest that bacterial nonpoint source pollution has a significant impact on the recreational water quality of Kailua Bay. Salinity changes at sites compared to the concentrations of fecal indicator bacteria indicate that dilution alone could not account for the reductions in bacterial number; reductions were also affected by other factors such as sunlight. These bacteria in stream recreational waters ultimately impact the ocean receiving waters, suggesting a need for the further studies to assess the origins of environmental sources of bacteria, as well as their impact on the health and well-being of the user population.
Pages/Duration:105 pages
Rights:Attribution-NonCommercial-NoDerivs 3.0 United States
Appears in Collections: WRRC Project Reports

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