Evolución hídrica de las Lagunas Reales (Cuenca del Duero, España) durante los siglos XX y XXI
- R. Mediavilla 1
- J.I. Santisteban 2
- V. Borruel 2
- A. de la Hera-Portillo 1
- M.T. López 1
- J.C. Gumiel 1
- 1 Instituto Geológico y Minero de España (IGME, CSIC)
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2
Universidad Complutense de Madrid
info
ISSN: 1576-5172
Year of publication: 2021
Issue Title: X Congreso Geológico de España
Issue: 18
Pages: 309
Type: Article
More publications in: Geotemas (Madrid)
Abstract
The Lagunas Reales are located southeast of Medina del Campo (Valladolid), within the Special Protected Area (SPA) called “Humedales de Los Arenales” (ES4180147) and lie on arkoses of the Tertiary Duero Basin. This paper analyzes the water evolution of the lagoons during the 20th and 21st centuries, based on the study of AEMET weather series, hydrogeological data of the IGME, information on aerial photographs consulted in the IGN, satellite multispectral optical images and agri- cultural and population evolution data obtained from the Spanish National Statistical Institute. The results indicate that until 1985 the wetland was fed, in addition to rainwater, by groundwater and that from that date in advance, it is disconnected from the regional detrital aquifer of the Duero, as result of a piezometric drawdown caused by the intensive exploitation of ground- water by farming. After 1985, the water table is only observed in the rainiest years (1991, 1998, 2001, etc.) and, during these episodes, they become a recharge area for the aquifer. The analysis of the water table evolution of the Lagunas Reales and their relationship with anthropic activity shows that the resilience of the wetland to anthropic conditions is very poor.