This provides technical requirements for the design of waterways, wetlands, stormwater pipes and other structures.
IDS Part 5 – Stormwater and Land Drainage [PDF, 501 KB] provides criteria for the design of stormwater related assets.
The Waterways, Wetlands and Drainage Guide includes specific engineering and ecological criteria for their design.
The Rain Garden Design, Construction and Maintenance Manual [PDF, 6.2 MB] details the technical requirements for the design and construction of rain gardens. It also provides a sample construction specification.