Entering and editing information about zones balances (inflows, outflows and storage sensors) and zones characteristics.
Zones should correspond to isolated areas of the system, surrounded by closed valves and where all inflows and outflows (if exist) must be measured. Zones can include for example DMA (District Metered Areas), pressure zones or operational zones. The configuration of the inflow and outflow sensors as well as tanks levels are done by editing the Flow In, Flow Our and Storage Columns. As an important note, the tank levels that should be considered for the zones balance are only those that are inside the zones boundary and serve as storage for the zone - this means that if a zone is supplied by a tank and the inflow sensor is located immediately downstream the tank, this tank level must not be considered.
Zones information can only be inserted/edited after zones are created in WaterSight, and this only happens after a zones shapefile is imported in WaterSight, in the GIS configuration page. After zones are created the user can manually insert/edit information related to each zone:
Note: System Total zone is always automatically created (this information does not come from GIS shapefile) and represents the all system.
To add more zones, the user needs to upload a new zone shapefile, in the GIS configuration page.
Method to use for calculating water losses. The following options are available:
The default option is the real losses calculation based on the zone minimum night flow.
Percentage that is considered for each water loss method previously defined:
It is possible to insert tags (or user defined groups) for each zone by directly clicking in a row in the Zones table, then clicking Edit and then filling the Tags section below the table.
Once tags are defined, those will be available in the Zones Network Monitoring pages, so that is easier to search and find specific Zones of interest. Below some examples of groups that may be relevant:
Most utilities manage their systems based on bigger zones (usually called operational zones or distribution systems), being each operational zone or system composed by several smaller zones (usually called DMA). In WaterSight it is possible to consider these two levels of zones hierarchy, but it is also possible to consider three or more levels of hierarchy (for example a town, that is composed by several distribution systems, being each system composed by several DMA).
In the example above, it is being considered a bigger zone (Oakville Zone) that is divided in two smaller zones (Oakville Low Zone and Oakville High Zone). In this case, in the zones configuration table, both Oakville Low Zone and Oakville High Zone should have as parent the Oakville Zone (example below).
For more information about WaterSight, please go to OpenFlows WaterSight TechNotes and FAQ's.