Changes

##The saturated hydraulic conductivity (K) is approximated by dividing A by 2/3, where A is the slope of the linear part of the graph. i.e when infiltration rate has stabilized.

##The saturated hydraulic conductivity (K) is approximated by dividing A by 2/3, where A is the slope of the linear part of the graph. i.e when infiltration rate has stabilized.

==To review==

==External references==

https://www.astm.org/Standards/D3385.htm

* https://www.astm.org/Standards/D3385.htm an alternative method which uses Mariotte tubes to maintain a constant water level during testing.