| Sumario: | The objective of this paper is to set up and investigation of a Storm Water Management Model (SWMM) for the construction of a Tyrolean weir and piping in Valle de Sol, Mendoza. In the region, the Department of Irrigation wants to improve the irrigation of the village Las Vegas. An embankment of gravel and rocks separate the Arroyo Morteritos with the Arroyo Alumbre and relocate the confluence ca. 2 km downstream, to ensure a good water quality for the irrigation. This is necessary, be-cause the quality and turbidity of the Arroyo Alumbre is not sufficient and as good as the water from Arroyo Morteritos. A Tyrolean weir will be constructed for draining the Arroyo Morteritos into the tube. For protecting the tube of flood events, it will be covered by a relocated earth embarkment. Latter is planned as a discharge of the flood over the dyke, directly into the Arroyo Alumbre.
For the dimensioning of the Tyrolean weir a 20 year storm was set up as the base for the construction. To verify the calculations for the dimensioning of the dyke and piping, made by the Department of Irrigation, a model of the region was developed. The model includes the watersheds, the future weir and piping.
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