Peaking operations, with the variable flow discharge and ramping patterns, the rate and frequency of water level changes, and the amount of time the station is at its maximum discharge level, can all have a significant impact on the degree of channel and bank erosion.
We offer a Badge of Honour to those valued supporters who have contributed to the Hanlon Creek Weir Removal Crowdfunding Campaign – Phase II. A BIG THANK YOU to all our supporters: Continue reading
Jeff Graham, P.Eng., President, GSS Engineering Consultants Ltd., prepared this comprehensive table reporting on the cost comparisons between dam repair/rebuild vs. decommissioning. These are actual completed projects, showing the before and after. Check out the table:
Since this project was first proposed, a large percentage of the community of Bala Falls have been opposed to it. Citizens have lobbied, marched, picketed, petitioned and railed against this abomination being built in the heart of their town. Immediately downstream of the dam is a favourite public swimming and picnic area that draws local residents and tourists from far and wide. This project will pose a public safety risk; however, there is no Public Safety Plan – it wasn’t included in the initial Environmental Report, nor was it adequately addressed. It was unacceptable in 2012, and it’s still unacceptable – it should never have been approved in the first place.
After reviewing the Project documentation, the issues raised by the requesters, and the outstanding concerns of technical staff, the MECP has determined that the project has not met the requirements of the Class Environmental Assessment for Waterpower Projects.
By Frederick Schueler and Aleta Karstad at ORA’s 2018 Annual General Meeting.Lessons-from-Rivers-ora-2018-ilovepdf-compressed-2
Our organizations recommend choosing Alternative 3 – the Full Removal of Springbank Dam and the naturalization of this section of the Thames River. We submit that full dam removal and naturalization are the preferred solutions from an environmental perspective and would likely prove to be the most cost-effective over the long-term when Life-cycle costs and available provincial and federal funding are considered.
Drought conditions could place additional stress on riverine ecosystems, while more extreme rainfall will heighten the risk of dam failures (18 dams were breached in a South Carolina flood in October of 2015) with rapid release of high volumes of water. There have also been recent dam failures right here in Ontario – the Gorrie Dam failure last year in Wingham was the most recent, putting more than 150 property owners at risk.