Storage at Beginning of Time Interval in Modified Pul's Method evaluator uses Storage at the Beginning of Time Interval = (Storage at the End of Time Interval+(Outflow at the End of Time Interval*Time Interval/2))-((Inflow at the Beginning of Time Interval+Inflow at the End of Time Interval)/2)*Time Interval+(Outflow at the Beginning of Time Interval*Time Interval/2) to evaluate the Storage at the Beginning of Time Interval, The Storage at Beginning of Time Interval in Modified Pul's Method formula is defined as the water in the system resides or "rests" as it moves from one water reservoir to another. Storage at the Beginning of Time Interval is denoted by S1 symbol.
How to evaluate Storage at Beginning of Time Interval in Modified Pul's Method using this online evaluator? To use this online evaluator for Storage at Beginning of Time Interval in Modified Pul's Method, enter Storage at the End of Time Interval (S2), Outflow at the End of Time Interval (Q2), Time Interval (Δt), Inflow at the Beginning of Time Interval (I1), Inflow at the End of Time Interval (I2) & Outflow at the Beginning of Time Interval (Q1) and hit the calculate button.