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Re:How French Drains Work by ejstronge on Wednesday August 07, 2024 @12:50PM (#41183135)
>Calculate how much water you actually need to drain. You can use the “100 year flood” values for your locale to get an upper bound on rainfall, then multiple by drainage area

How do you incorporate this into a drain design?

Re:How French Drains Work by ejstronge on Wednesday August 07, 2024 @01:15PM (#41183362)
Both of these links include a dry well - if one is draining to daylight, how do you incorporate the 100-yr flow rate?
Re:How French Drains Work by toomuchtodo on Wednesday August 07, 2024 @01:18PM (#41183391)
Can you share what daylight looks like for your use case? Where is your target for the water to be managed?
Re:How French Drains Work by ejstronge on Wednesday August 07, 2024 @03:01PM (#41184267)
Daylight means a field whose elevation is below the area to be drained in this case