How to Calculate Change in Drawdown given Time at 1st and 2nd Instance?
Change in Drawdown given Time at 1st and 2nd Instance calculator uses Difference in Drawdowns = (2.303*Discharge*log((Time of Drawdown/Time of Drawdown (t1)),10))/(4*pi*Time in Hours for Well Discharge) to calculate the Difference in Drawdowns, The Change in Drawdown given Time at 1st and 2nd Instance is defined as the value of change in drawdown when we have prior information of other parameters used. Difference in Drawdowns is denoted by Δs symbol.
How to calculate Change in Drawdown given Time at 1st and 2nd Instance using this online calculator? To use this online calculator for Change in Drawdown given Time at 1st and 2nd Instance, enter Discharge (Q), Time of Drawdown (t2), Time of Drawdown (t1) (t1) & Time in Hours for Well Discharge (thr) and hit the calculate button. Here is how the Change in Drawdown given Time at 1st and 2nd Instance calculation can be explained with given input values -> 0.01708 = (2.303*1.01*log((240/120),10))/(4*pi*36).