In my experience, in each ...

In my experience, in each node will be several base demands, each with it own demand pattern. In example, in each building can be same enterprieses, offices and inhabitants. Each category of previously mentioned consumer types have their own demand pattern. I do not think that it will be possible to measure the nodal base demand. At least in our city (Latvia, Riga) each building pay for consumed total water to city waterworks (where I am working) according water meter reading for whole house and data about demand is not divided between consumers. I in my model I take into account SCADA average data about total water delivered in each hour to city network and data about total average day sold water. From there I get average figure of leakage in day. In our city, we have around 20000 buildings. We have data about total average day sold water for each building. They are divided as inhabitants consumers, enterprise consumers and waterworks own consumption. Afterword I according available data about each enterprise character (office, school, supermarket) I developed around 30 different demand patterns. Therefore, in general I did not measure directly nodal base demand, but calculated it from available measurements (SCADA about delivered water and sold water to consumers).