Answer:
the calculations and their justification are found in the explanation section.
Explanation:
The average transmissivity is
Qw = pumping rate = 400 L/s = 400000 m³/s
s₁ = drawdown of the well = 1 m
s₂ = 0.5 m
r₁ = piezometric level = 50 m
r₂ = 100 m
Replacing values
the hydraulic conductivity is
b = thickness = 24 m
Replacing
no steady state for this drawdown.
The radial distance is
here
sw = 4 m = drawdown at the pumping well
s =drawdown of the radial distance = 0
rw = radius of the pumping well = 0.5
Clearing r
It can be said that the steady state reduction is not valid at a distance beyond that calculated because the reduction would become negative.