RainYard Tools
RainYard Tools

Pavement flow

Driveway Runoff Calculator

Estimate stormwater coming off a driveway, patio, or hardscape area.

Gallons357 galEstimated water volume.
Cubic feet47.8 cu ftUseful for storage sizing.
55-gal barrels6.5Rain barrel equivalent.

Related

Next useful checks.

Yard Drainage Calculator

Estimate runoff, temporary storage, and surface area needed when a yard stays wet after rain.

French Drain Calculator

Estimate runoff, trench storage, gravel, and pipe length for a French drain run.

French Drain Gravel Calculator

Estimate gravel, fabric, and pipe length for a French drain trench.

French Drain Cost Calculator

Estimate gravel, fabric, pipe, and labor cost for a French drain installation.