I runned a lot of times the Annual Water Yield and now I’m working on the Water Scarcity and Valuation components. I have some doubts of how much complexity for water consumption/LULC classes it is possible to consider. My reality is that beyond the consumption of water by urban population, also the natural drainage receives domestic sewage, leading to two basic impacts: 1) water produced in cities are not consumed, due to its quality, and 2) this water often reaches the reservoirs decreasing its quality, which can rise costs with treatments, as eutrophication per example. Those two points are not a direct consumption, but it affects water scarcity.
I was thinking how my Water Demand Table can reflect not only the water consumption but also this water scarcity that cities generate. Would it make sense?