The objective of a swale is to minimise the use of piped stormwater draingage system, in accordance with Water Sensitive Urban Design. It also functions to slow down stormwater flows and remove coarse to medium sediments.
A swale is not suitable for very steep (>4%) or flat (<1%) terrain.
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External Links & References
- Evaluating Options for Water Sensitive Urban Design A National Guide - Appendices Department of Environment
- Construction and Establishment Guidelines: Swales, Bioretention Systems and Wetlands (Water by Design)
- Swales including Buffer Strips (Gold Coast City Council)
- Google Search (Swale)
- Google Search (Swale Drain)