Yard Drains Calculators

Plan drainage that solves the problem the first time. These yard drain calculators turn slope, runoff, and trench dimensions into material quantities, cost estimates, and project-ready results for French drains, catch basins, and channel drains.

Yard drainage planning checklist

  1. Observe where water starts, travels, and can discharge safely during wet conditions.
  2. Measure the route and elevation change before selecting pipe, basin, or gravel quantities.
  3. Confirm the discharge location and any local drainage requirements before excavation.

Common planning pitfalls

  • Starting a trench without a confirmed outlet or grade.
  • Directing runoff toward a building, neighboring property, or unsuitable discharge point.
  • Treating a quantity estimate as a drainage design for a complex site.

Calculators in this category

  • French Drain Calculator
  • Catch Basin Sizing Calculator
  • Drainage Slope Calculator
  • Channel Drain Calculator
  • Downspout Drainage Calculator
  • Yard Grading / Slope Calculator
  • Dry Well Calculator