Bottom topography,recent sedimentation and water volume of the Cerro Prieto Dam,NE Mexico |
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| Institution: | Universidad Autónoma de Nuevo León, Facultad de Ciencias de la Tierra, Carretera a Cerro Prieto km 8, Linares, 67700, N.L., México;Instituto Potosino de Investigación Científica y Tecnológica, A.C., División de Geociencias Aplicadas, Camino a la Presa San José 2055, Lomas 4ª. Sección, 78216, San Luis Potosí, S.L.P., México;Universidad Autónoma de Nuevo León, Facultad de Ciencias de la Tierra, Carretera a Cerro Prieto km 8, Linares, 67700, N.L., México;P.P. Shirshov Institute of Oceanology, Russian Academy of Science, 36, Nahimovsky prospect, Moscow, 117997, Russia;Innomar Technologie GmbH, Schutower Ringstrase 4, 18069, Rostock, Germany;Universidad Autónoma de Nuevo León, Facultad de Ingeniería Civil, Avenida Universidad s/n, Cd. Universitaria, San Nicolás de los Garza, 66451, Nuevo León, México;Posgrado de la Facultad de Ciencias de la Tierra, Universidad Autónoma de Nuevo León, Carretera a Cerro Prieto km 8, Linares, 67700, N.L., Mexico |
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| Abstract: | The Cerro Prieto dam, a relatively small water reservoir in NE Mexico, is one of the main resources of potable water for Monterrey, a city with a population of about four million inhabitants. A high resolution seismic study using non-linear parametric sub-bottom echo-sounder SES-2000 was carried out in this water reservoir. High resolution acoustic data interpretation shows that the thickness of recent sediments due to siltation of the reservoir reaches 3.5-4.0 m. It shows a high recent sedimentation rate (1-2 up to 14 cm/ year). Based on the echo-sounder data, the first bathymetric map and a digital model of recent sediment thickness were designed. A significant (5-12%) difference between the volume capacity value used by National Commission of Water (CNA) and acoustic survey results was revealed. Differences between the CNA and acoustic data indicate storage losses from 12-17 up to 30 million cubic meters. The results obtained through study such as this one, could be useful to improve a water resources management. |
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| Keywords: | non-linear acoustic method NE Mexico water reservoir bottom topography water capacity recent sedimentation |
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