Interesting post APS but as usual it looks like your twisting things to make your point.First of all,I have no dog in this fight and don't have an opinion either way.
APS states "The bottom photo shows (I think) the futility of using rock to stop erosion on a collapsed lakeside shoreline".That rock surely lokks like it was put in AFTER the collapse or it would have the dirt sitting on top of the rock.
APS also states "The top photo is of a developer's deep ditch filled with "rip-rap". As can be seen, grass has started growing in from the right side. Since this 2007 photo, after only three years in existence, this ditch is now 60% full of sand!
Well wouldn't the grass or anything else grow there anyway if the riprap was not present?I'm not sure what your point is with respect to crushed stone being permeable.If crushed stone gets filled in with dirt and grass then it will end up pretty much the same as if the stone wasn't there right?
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SIKSUKR
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