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Experimental efforts to aerate the Avon River with small in-stream dams

Show simple item record Bacchus, A.
dc.coverage.spatial Avon River Basin
dc.coverage.spatial Stratford
dc.coverage.spatial Ontario 2018-12-05T13:56:18Z 2018-12-05T13:56:18Z 1982 1982-08
dc.description.abstract As part of the Stratford-Avon River Environmental Management Project, the Water Resources Branch of the Ontario Ministry of the Environment carried out investigations on August 26-27, 1980 on the Avon River at a weir and a small rock dam at two separate locations to quantify the increase in dissolved oxygen (DO) due to aeration at the base of these dams. Further studies were carried out during the summer of 1981, in the Project's experimental reach, to test for aeration efficiency using four weir designs with a maximum height of 0.5 m. Data from these surveys were then used as input for the DOMOD3 DO-BOD model to predict how far downstream the effects of the dam and weirs would persist. Survey results indicate that aeration is a function of height and turbulence. Since height is a limiting factor in the Avon. River, because of the flat river banks, the 5-step design with a height of 0.5 m seems to be the best aerator for the Avon River. The modeling results indicate that the effects due to weir aeration persist from 43 m to 1281 m before DO drops below the Provincial Water Quality Objective of 47% saturation (approximately 4 mg/L minimum) and from 470 m to 1537 m before returning to background levels.
dc.description.sponsorship Ontario Ministry of the Environment
dc.format pdf
dc.language.iso en
dc.publisher Queen's Printer for Ontario
dc.relation.ispartofseries Technical report S-5, Stream Management Sub-Committee, SAREMP
dc.rights Queen's Printer for Ontario, Crown Copyright, Non-Commercial Use Permitted
dc.subject river
dc.subject water quality
dc.subject weir
dc.subject dam
dc.subject dissolved oxygen
dc.subject aeration
dc.subject modelling
dc.title Experimental efforts to aerate the Avon River with small in-stream dams
dc.type Technical report
dc.rights.holder Queen's Printer for Ontario
dc.contributor.affiliation Water Resources Branch, Ontario Ministry of the Environment

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