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Calculators, Tools, and Forms

Calculators, Tools, and Forms

Design Aids

  • Slope Ratios Angles
  • Pipe Flow Depth And Velocity
  • Trap Channel Design Manning
  • ADS Detention Design Worksheet
  • UD Channels V1.04
  • UD Detention 2.2
  • ADS Retention Design Worksheet
  • UD Culvert V2.00C
  • UD Inlet V2 14C
  • Slotted Drain Spreadsheet
  • UD Rational V1.02A
  • Stage Discharge For Risers
  • Easement Widths
  • Time Of Concentration Basins
  • Plan Review Calcs

Forms & Agreements

  • NOI Interactive Mapping Tool
  • Horry County Stormwater Practices Permanent Maintenance Covenants

Cost Estimates

  • BMP REALCOST V1.0
  • BMP Realcostmanual V1.0

Sediment Calculators

  • Temporary Sediment Trap Stage
  • Particle Settling Velocity Non Log
  • Sediment Storage USLE
  • Eroded Particle Size Dist
  • Rock Check Stage Flow
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