This invention provides a modular ducting section and a networked utilities ducting system and rain and road water management system formed from two or more modular ducting sections laying end-to-end. Each modular ducting section comprises open-topped utility channels for carrying utility service supply lines such as electricity, gas, water, or communications, an open-topped catchment channel for carrying rain water captured from a building structure or garden, and a supply channel for supplying an end user with utility services via a supply line, while also allowing the end user to feed an end-user generated utility supply back into the corresponding utility service supply line via a return line. Each modular ducting section further comprises a road water runoff flange and a main channel cover, which when combined, form a curb-side structure that functions to keep any contaminated road water from the reusable rain water collected in the catchment channel.