WaterWare Release Notes
Irrigation Water Demand ModelIWD is a dynamic (daily) model to estimate supplementary irrigation water demand for irrigation districts.
The model handles multiple crops from an integrated crop data base. Climate (daily temperature and precipitation), soil characteristics, irrigation technology and crops and cropping patterns are the main inputs defining a scenario.
The model generates time series of irrigation water demand, that can be exported for use in the Water Resources Model.
Crops can be selected from the embedded crop data base. They are defined in terms of the area they occupy, planting date, and growing period until harvest time.
Each crop used in a scenario inherits its generic properties
like physiological water demand etc., but the user can overwrite them
to better represent local conditions.
This offers a selector showing crop names, planting dates, and the average crop water demand in mm (assuming optimal growing conditions) over a growing cycle or year for perennial plants like fruit trees.
Selecting a plant from the listing will show its data base entry.
Crops are shown with their common and scientific name, as well as a short description of the data record indicating, for example, the source of information and any bibliographic references or links. Author, creation and modification dates complete the meta data.
The core of the description if multi-media material, shown in an embedded browser window,
basic descriptive data like the CROPWAT Kc factor,
average physiological water demand, planting date, and growing period.
A separate window shows the temporal variation of the basic data:
The model results are presented as a tabular summary of the water budget:
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