{"id":932,"date":"2018-09-03T14:11:18","date_gmt":"2018-09-03T14:11:18","guid":{"rendered":"https:\/\/www.ufrgs.br\/lsh\/?page_id=932"},"modified":"2023-02-06T16:31:06","modified_gmt":"2023-02-06T16:31:06","slug":"warm-gis-tools","status":"publish","type":"page","link":"https:\/\/www.ufrgs.br\/lsh\/products\/warm-gis-tools\/","title":{"rendered":"WARM-GIS Tools"},"content":{"rendered":"

WARM-GIS Tools<\/strong><\/h1>\n

(Water Resources Management GIS Integrated Tools)<\/h2>\n

Introduction<\/strong><\/h2>\n

The WARM-GIS Tools toolkit consists of a set of operations aimed at facilitating watershed management in a Geographic Information Systems (GIS) environment. It allows, from a predefined hydrographic base, the insertion of water availability data and water uses (withdrawals, effluent releases and reservoirs), allowing the qualitative-quantitative simulation and verifying the impacts of the uses on the availability and the quality of the water. It also corresponds to an update of the SAD-IPH system.<\/p>\n

The model is operated on a permanent basis, that is, without variation in time, allowing a picture of the river basin at a given moment. This time, is usually defined as a scenario of low water availability, and can be characterized statistically as the flow with 90% or 95% permanence (amount of water that is equaled or surpassed in 90% or 95% of the time), extracted from from observed or calculated series of flows. Thus, it is possible to have a baseline of the impacts of water withdrawals in times of scarcity, or the impact of effluent releases in periods of reduced availability of water for dilution.<\/p>\n

The scheme of obtaining the hydrographic base that represents the system of rivers to be evaluated is represented in the figure below. In (a), we have represented a Digital Elevation Model – MDE (raster type file where each cell presents the terrain quota for a certain spatial resolution), in (b) we have the result of processing this file with obtaining units (c) an application of the WARM-GIS Tools with the insertion of water withdrawals and the verification of the impact on the water availability is presented. SRTM MDEs with 90 m spatial resolution for the entire world are available from the CGIAR (Consultative Group on International Agricultural Research) at this link<\/a>.<\/p>\n

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Scheme of obtaining the hydrographic base used in the WARM-GIS Tools model.<\/p><\/div>\n

The WARM-GIS toolkit is divided into two distinct modules, namely:<\/h2>\n