Reference & User Manual
|Release Level||7.0||Release Date||2016 12||Revision Level||beta|
|Last modified on: Sunday, 6-Nov-16 19:05 CET|
River Basin Objects
WaterWare structures any river basin by sets of interacting objects.
All River Basin Objects are spatially referenced, that is, they are known by location (map display and selection),
For example, sub-catchment objects use the rainfall-runoff model RRM to obtain the runoff from the catchment under a set of landuse, internal water use, and meteorological conditions (the latter are obtained as time series from a climate stations object); this runoff, in turn, is used by the water resources model WRM as input for a start node (sub-catchment node). In the same way, demand nodes in WRM are linked to various river basin objects (settlement, industries, irrigation districts), and obtain their detailed behavior over time (eg., water demand, consumptive use coefficients, losses, etc.) from these objects.
Through the location of objects, the linkage to the GIS layers is established, so that spatial concepts (such as catchment, river reach, or the neighborhood of a point location) can be used for calculations (methods) by the objects.
The objects in WaterWare are grouped by CLASS.
Each of these classes may have any number of elements.
Each class has a set of specific attributes, organized in a set of data structures and associated METHODS for instantiation. Data structures include
Objects may be linked to other objects, for example, a treatment plant may lead on to a flow and a water quality observation station and its data, and objects have hypertext files that provide further explanation, meta data, and context.
Objects have methods available, which allow them to obtain some of their dynamic or derived properties in a specific context. Many object properties are static and can be stored in their respective data bases and files. Other object properties, such as the outflow from a sub-catchment or the monthly water requirements of an irrigation district, depend on numerous controlling variables or plans, decisions, and assumptions. Models such as the RRM rain-runoff model or the irrigation water demand estimation model can be triggered by the respective objects (i.e., sub-catchments, irrigation districts) to estimate such values as their attributes. They can in turn be fed to a subcatchment start node or an irrigation demand node in the river network, and provide input the corresponding simulation models.
The context for such an estimation is the default (reference) year and all observations and data pertaining to it. Alternatively, the context can be defined by a model specific scenario (including, for example, the selection of a specific year or period and its hydrometeorological characteristics), and, within this constraint, by a set of user specified assumptions.
The Object Data Base
In the data base module, a hierarchical class/element selector is displayed with a parallel basin map showing the element's location with unique class symbols. The selector shows:
Selecting a class leads to a similar page with a selector for the elements of this class, which are also displayed selectively now on the parallel map window. The selector for the members of a class shows
Selecting any of the elements in the data base invokes a screen display derived from the class specific TEMPLATE for the respective class, consisting of HEADER and ATTRIBUTE information together with specific WIDGETS such as the MAP/location display, an embedded hypertext window (depending on the layout defined in the TEMPLATE, this may also be a button for a pop-up display of that hypertext information/imagery), and special data display WIDGETS for time series data, land use distribution pie chart, crop distribution pie chart, are-elevation graph, reservoir geometry, etc.
This screen display function has an EDIT button (only for ADMIN type users) that enables editing of attributes (descriptors or special structures with specific tools like area-elevation !) and provides save, delete, and copy functions similar to any scenario editing.
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