Hey guys, I have a project soon to start, that I need to build up some banks so water won't seep through. I know clay would be good, but I need gravel.....what should I use??:beatsme Thanks for your help Danny From The Bear Country
Any granular material you use will have some permeability, no matter what you use. A medium plastic clay will have the greatest stability and lowest permeability as a bulk material. If you must use gravel, a well graded crush with a high fines content would likely give you your best shot. Ideally you would build your slope, place an impermeable liner over the side holding the water. A HDPE or bonded bentonite would be ideal, but a little pricey
Top soil works pretty good too.Ron G