Calculate r using the Erasure Method
Use this calculator to determine the recharge rate (r) of a confined aquifer using the step-drawdown test data.
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- Confined aquifer
- Well radius (r_w) = 0.15 m
- Distance between observation wells (x) = 100 m
- Aquifer thickness (b) = 30 m
- Storage coefficient (S) = 0.0001
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| Step | Drawdown (s_i) | Transmissivity (T) | Recharge Rate (r) |
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What is r using the Erasure Method?
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The recharge rate (r) using the erasure method is a hydrogeological parameter used to estimate the amount of water recharging a confined aquifer. This method is particularly useful in situations where direct measurement of recharge is difficult or impossible.