Author Topic: Even well maintained dams are dangerous  (Read 38 times)

Michael Caswell

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Even well maintained dams are dangerous
« on: May 20, 2020, 06:27:10 am »
Dam Fails in Edenville, Michigan

https://www.weather.com/news/news/2020-05-19-severe-weather-impacts-michigan-flooding-ohio-flooding

Here's what this well maintained dam looks like, from a Google Maps photo.


Note the complete lack of trees and vegetation. It appears to have failed due to torrential rain and saturation of the earthen fill. The overtopping of the dam then washed away the dam.

What does this prove?  Even well maintained dams from a vegetation perspective are dangerous!

 The Sanford Dam burst on Tuesday after days of heavy rain

https://www.bbc.com/news/world-us-canada-52735170


Another dam, as seen here with no vegetation, yet it failed.

« Last Edit: May 21, 2020, 08:09:51 am by Michael Caswell »

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Canal Neighbor

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Re: Even well maintained dams are dangerous
« Reply #1 on: May 20, 2020, 07:38:05 am »
News reported a heavy rainstorm just prior to collapse of TWO dams along this Michigan river. Midland Michigan had 7 inches of rain over the past weekend.

One dam had a recent inspection and received a FAIR rating, the other dam, the one that broke first, it had a recent UNSATISFACTORY rating, stating it was a possible hazard to human life.

Many canal embankments in our area have received the same unsatisfactory rating, and have been labeled High Risk.

NY canal earthen embankment dams are just an accident waiting to happen. Too bad most of the Rochester area is unwilling to admit the problem and would rather fight against work to repair an unsafe canal system.