Hi there,

I need help calculating my hydraulic conductivity and the base flow from these values. The values needed to calculate the hydraulic conductivity for both columns is in the picture I have attached to this message. We use Darcys law (rearranged) to calculate for hydraulic conductivity (k). The rearranged Darcys law I used was k= Q * L / A (deltaH)

Would A (cross sectional area) be pi * r^2? so for the small column would A = pi * 7.5^2? I don't know what they mean by cross sectional area but I worked out A by halving the diameter for the columns and then using the equation to get the area of the circle to determine A. I may be completely wrong. Please help me calculate the hydraulic conductivity of the two columns.

After hydraulic conductivity is calculated, we are required to calculate base flow using Darcys equation Q = -K*A(deltaH/deltaA).

Our supervisor has given us the values of (deltaH/deltaA) =0.055m/m and cross sectional area measured on the field site = 3600m^2 ( this is different to the cross sectional area of the two columns mentioned above). I keep getting the answers wrong for base flow. Also, the base flow MUST be in m^3/s units, so the calculated hydraulic conductivity above is cm/min and therefore must be converted to m/s. Please help me with this