Groundwater level in clay soils by color
Groundwater level in clay soils by color
(OP)
I was reading another thread regarding GWL uncertainty in clay soil and it reminded me that the historic GWL can be approximated by where the clay changes color from brown to gray. This is the result of the oxidation of ferrous iron Fe+2 into ferric iron Fe+3 by oxygen above the water level, or at least that's the way I remember it. Comments are welcome. Obviously this technique works only when other chemicals don't confuse the issue. Anyway that's my tip for what it's worth.
Happy bore hole logging!
Happy bore hole logging!





RE: Groundwater level in clay soils by color
RE: Groundwater level in clay soils by color
I think most of our junior staff members are shown this procedure on there first day of logging boreholes.
Coneboy
RE: Groundwater level in clay soils by color
As a qualifier to my original post, I noticed a post in another thread from one of the experts
I completely agree and appreciate the opportuinty to clarify the information.