Technical Guides & Tools
Flocculants & Turbidity Control
Guidance and reference materials for selecting, testing, and applying flocculants to improve sediment removal and turbidity control on disturbed sites.
- NC DWR Approved PAMs/Flocculants List
- How to Control Turbidity on Construction Sites
- NCDOT Turbidity Reduction Options for Borrow Pits
BMP Installation & Field Guidance
Practical resources for installing, inspecting, maintaining, and troubleshooting erosion and sediment control practices in the field.
- NC Erosion and Sediment Control Field Manual
- NCDEQ E&SC Standard Drawings (PDF & CAD files)
- Wattle Installation Guide
- Wrapped Type A Check Installation Guide
- Erosion and Sediment Control Inspector’s Guide
Design & Planning Tools
Technical references, calculators, and planning aids that support erosion and sediment control design, hydrology, sizing, and site-specific decision-making.
Design & Planning Calculators
- Borrow Pit Dewatering Basin
- Manning’s N
- Open Channel Flow: Tractive Force – Riprap, Mild Slope
- Open Channel Flow: Tractive Force – Synthetic Liner
- Open Channel Flow: Permissible Velocity – Vegetation
- Open Channel Flow: Tractive Force – Riprap, Steep Slope
- Plunge Pool, Submerged Outlet
- Plunge Pool, Cantilevered Outlet
- Rational Method
- Rational Method with Kinematic Wave
- Riprap Outlet Protection
- Sediment Basin Design
- Skimmer Basin Dewatering
- Spillway Capacity
Soil Stabilization & Restoration
Resources focused on restoring disturbed soils, improving infiltration, supporting vegetation establishment, and strengthening long-term site stabilization.
Site Stabilization Standards
- Temporary Seeding
- Permanent Seeding
- Mulching
- Riprap
- Rolled Erosion Control Products (RECPs)
- Compost Blankets
Inspection & Monitoring
Field and technical guidance for measuring turbidity, sediment, nutrients, metals, and other water quality indicators associated with construction and stormwater runoff.