Drainage Planning Tools
Professional hydraulic calculators designed to help engineers and contractors plan effective drainage solutions with precision and confidence.
Runoff Calculator
Calculate peak flow rates and total runoff volume based on local rainfall data, drainage area, and surface conditions.
Key Features
- Automatic rainfall intensity lookup by ZIP code
- Multiple return period analysis (2-year to 100-year storms)
- Common surface type coefficients
- Recommended pipe sizing based on flow rates
Common Applications
- Sizing catch basins and area drains
- Determining required pipe capacities
- Stormwater detention calculations
- Municipal permit requirements
Trench Drain Sizing Calculator
Comprehensive analysis tool for sizing trench drains, considering both channel capacity and outlet configurations.
Key Features
- Combined runoff and hydraulic calculations
- Channel and outlet capacity analysis
- Standard trench sizes and materials
- Real-time adequacy assessment
Common Applications
- Driveway and parking lot drainage
- Industrial facility design
- Sports field drainage systems
- Linear drainage optimization
Flow Calculator
Analyze open channel hydraulics using Manning's equation and flow regime characteristics.
Key Features
- Manning's equation calculations
- Flow regime analysis
- Velocity and depth relationships
- Multiple channel materials
Common Applications
- Channel design verification
- Erosion control assessment
- Sediment transport analysis
- Hydraulic jump prediction
Need Help Choosing?
Our planning tools are designed to work together for comprehensive drainage solutions. Start with the Runoff Calculator to determine flow rates, then use either the Trench Drain Sizing Calculator for linear drainage or the Flow Calculator for open channel analysis.
Contact our engineering team for guidance