3 ms·

The Masonry dam in Washington state near Seattle also has/had this problem. The geotechnical reports and conditions were ignored and the water flowed under and

The Masonry dam in Washington state near Seattle also has/had this problem. The geotechnical reports and conditions were ignored and the water flowed under and around the dam, popping up in all kinds of places. The dam was never able to be filled and is just called the masonry dam since nobody wanted it named after them. https://en.m.wikipedia.org/wiki/Cedar_River_(Washington) https://en.m.wikipedia.org/wiki/Cedar_River_(Washington)

mynameisvlad 10y ago
Masonry dam had quite a different problem which is just that there was too much water and it couldn't keep up, so water spilled over the side about 6000ft away from the dam. The problem with the Mosul dam is that it's built on soluble rock that could be swept away with enough pressure. Yes, too much water is the cause of both failures, but they're quite different.
- snowwindwaves 10y ago
  do you have a better link to information on Masonry dam? My information is second hand from a hydro electric turbine expert. He clearly stated to me that the dam was built in a location that was geotechnically unsuitable so water flooded underground channels due to the pressure of the water behind the dam and popped up all over the place. A nearby lake level raised a bunch. I might have got the wrong link. "masonry dam" is hard to google, as intended.
  - mynameisvlad 10y ago
    Heh, I was originally going to ask you for more information before my comment because the link wasn't the most descriptive on that incident, but briefly mentions that it happened 6000 feet away from the dam, which got me curious. I think had some more luck searching for "Boxley Creek 1918" or "Boxley Burst" which was the name of the actual incident. http://www.historylink.org/File/2426 http://www.historylink.org/File/2426 was the first result on Google.

3 ms·

The Masonry dam in Washington state near Seattle also has/had this problem. The geotechnical reports and conditions were ignored and the water flowed under and

by snowwindwaves 10y ago

mynameisvlad 10y ago
Masonry dam had quite a different problem which is just that there was too much water and it couldn't keep up, so water spilled over the side about 6000ft away from the dam. The problem with the Mosul dam is that it's built on soluble rock that could be swept away with enough pressure. Yes, too much water is the cause of both failures, but they're quite different.
- snowwindwaves 10y ago
  do you have a better link to information on Masonry dam? My information is second hand from a hydro electric turbine expert. He clearly stated to me that the dam was built in a location that was geotechnically unsuitable so water flooded underground channels due to the pressure of the water behind the dam and popped up all over the place. A nearby lake level raised a bunch. I might have got the wrong link. "masonry dam" is hard to google, as intended.
  - mynameisvlad 10y ago
    Heh, I was originally going to ask you for more information before my comment because the link wasn't the most descriptive on that incident, but briefly mentions that it happened 6000 feet away from the dam, which got me curious. I think had some more luck searching for "Boxley Creek 1918" or "Boxley Burst" which was the name of the actual incident. http://www.historylink.org/File/2426 http://www.historylink.org/File/2426 was the first result on Google.