In the face of climate change in various parts of Italy, including Piedmont, the hydraulic and hydrological invariance (HHI) principle has been adopted as a measure to mitigate the adverse effects of new developments on hydraulic and hydrological-related risks caused by urban runoff. To satisfy the HHI principle, a new development should limit both peak discharge and total volume of runoff to under pre-development values. Low Impact Development (LID) controls, often categorized as green infrastructure, can be used to achieve HHI by mimicking natural processes of water, such as infiltration, evapotranspiration, and detention; however, their effectiveness to satisfy HHI just by themselves remains open to debate.