Description: A natural or constructed channel that is shaped or graded to required dimensions and established in suitable vegetation for the stable conveyance of runoff to improve water quality. Benefits may include reduced soil erosion, sedimentation, and pollution from dissolved and sediment attached substances.
CCAP Grassed Swale Policy
Requirements for all CCAP Practices
Maintenance Period: 5 years single-family home, 10 years all other properties.
Additional Spot Check Requirements: None
BMP Units: Square Feet
Cost Information: Most components are cost shared at 75% of average cost. See CCAP Average Cost List for details.
CS2 Project Description examples
Expected Results:
- Total Nitrogen Removed
- Total Phosphorus Removed
- Soil loss reduction
Reference Materials:
NC-CCAP 11 Signature Page
Map with BMP location, fields, and roads
For RFP:
Receipts for actual cost items.
| CS2 Common Components | Units |
|---|---|
| Excavation | SqFt |
| Vegetation (grass) | SqFt |
| Vegetation - mulch, netting | SqFt |
| Vegetation - mulch, small grain straw | SqFt |
| Filter cloth - geotextile fabric | SqYd |
| Matting - excelsior, installed | SqYd |
| Grassed swale - engineering (if PE required) | Job |
JAA:
- Grassed Swale (SWCC) for sites when the conditions below are not met
- Requires a Professional Engineer stamped design for sites with any of the following:
- The 2 year storm velocity is greater than 2 feet per second.
- The 10 year storm velocity is greater than 5 feet per second.
- The drainage area is greater than 2 acres.
NRCS: None
Refer to the SWCC JAA Application Requirements for details.