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Permalink Reply by Boilerplater on September 15, 2010 at 11:52am

I've worked on wetland projects that used a bentonite liner. There are companies that package it in large 20' wide rolls here in the US. If I remember correctly it needs to be placed on a layer of compacted sand. A supplier will probably have installation details. Have you found any bentonite suppliers there in Portugal?

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Permalink Reply by Josh on September 15, 2010 at 1:36pm

http://www.cetco.com/LT/

The above link may help

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Permalink Reply by henry cohen on December 11, 2010 at 3:13pm

Great site, been looking for something like this. Thanks

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Permalink Reply by Christa Jordan on December 11, 2010 at 8:34am

Are you talking about building a dam? Altering the natural hydrology can really have unforseen outcomes. Sediment loading alone can create major changes (Erosion) downstream. The professions most skilled at figuring out these complex interactions may be in the engineering fields: hydrogeologists, for example. Large scale water manipulations require skill and experience beyond what you will be able to get from a forum like this. I would suggest you find a professional who has proven experience.

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Permalink Reply by Thomas J. Johnson on December 11, 2010 at 1:31pm

Sorry, I can't help it. Every time I hear the word pond I think;

 

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Permalink Reply by Thomas J. Johnson on December 11, 2010 at 3:45pm

http://www.abcponds.com/ponds-information/how-sodium-bentonite-work...

See Josh's link for bentonite products.

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