WUEMoCA (http://wuemoca.net) is an operational scientific web-mapping tool for the regional monitoring of land and water use efficiency in the irrigated croplands of the transboundary Aral Sea Basin (Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, Uzbekistan, and Afghanistan). The tool is being developed by the Universities of Wuerzburg and Halle-Wittenberg in cooperation with Greenspin GmbH from Wuerzburg and SIC ICWC, in the frame of the CAWa project (“Central Asian Water” www.cawa-project.net) phases III and IV (2015-2019), funded by the German Federal Foreign Office. It provides access to essential indicator maps such as land use intensity, crop productivity and water use efficiency, based on open-source optical remote sensing products (MODIS, calibrated with in-situ data), climate data, and statistical hydrographic data such as water intake. Observations are provided for the period from the year 2000 onwards.
An automated processing of newly incoming satellite and climate data allows for the operational use of this geoinformation tool in land and water management institutions across Central Asia. The interactive “User Polygon Toolbox” was developed to update information and to fill the still existing data gaps, such as boundaries of small units like water user associations or sensitive water statistics. Users are enabled to define own areas of interest, to modify existing information, and to add own statistical data to calculate further indicators, e.g. irrigation efficiency within the ongoing season. Changes remain on the client side and do not update the central database of WUEMoCA.