Hydrological changes in Lerma creek (Zaragoza) after the implementation of irrigation

J. Causapé, D. Merchán, R. Abrahão, I. García-Garizábal

Abstract


Irrigation expands without a real knowledge of its impacts and dynamics. This work aims to analyze changes in a natural creek’s hydrology as a consequence of receiving irrigation return flows from a newly-irrigated area. To this end, trends and seasonal patterns of flow, electrical conductivity and nitrate concentration were studied in Lerma creek (Zaragoza) from unirrigated conditions (2004) until the new irrigation area was completely transformed (2011). Irrigation resulted in an increase in flow (4.2 L/s year) and nitrate concentration (5.6 mg/L year) values. Although electrical conductivity decreased (-0.4 mS/cm year), the increase in flow resulted in an increase of the mass of salt exported from the area (232 kg/year). Irrigation management and hydro geological conditions produced annual, weekly and daily cycles of the studied variables. The results provided an insight on hydrological changes and their dynamics after implementation of irrigation, which should be taken into account for an adequate water resources management.

Keywords


Trends; cycles; stream water flow; salinity; nitrate

References


ABRAHAO, R., (2010). Impactos ambientales del riego: La transformación de la cuenca de Lerma (Zaragoza, España). Tesis doctoral. Departamento de Ingeniería Química y Tecnologías del Medio Ambiente. Universidad de Zaragoza. 143 pp.

CAUSAPÉ, J., QUÍLEZ, D., ATAGÜÉS, R., (2004). Assessment of irrigation and environmental quality at the hydrological basin level II. Salt and nitrate loads in irrigation return flows. Agricultural Water Management, 70: 211-228.

CHE, (2006). Control de los retornos de las actividades agrarias de la cuenca del Ebro: evaluación de las tendencias de la calidad del agua, control experimental de los retornos y propuesta de red de control. Informe interno, 284 pp. Disponible en: www.chebro.es [9 de septiembre de 2011].

CUSTODIO, E., (2002). Aquifer overexploitation: What does it mean? Hydrogeology Journal, 10: 254-277.

DUNCAN, R.A., BETHUNE, M.G., THAYALAKUMARAN, T., CHRISTEN, E.W., MCMAHON, T.A., (2008). Management of salt mobilisation in the irrigated landscape. A review of selected irrigation regions. Journal of Hydrology, 351: 238-252.

EPA, (1992). Managing nonpoint source pollution. United States Environmental Protection Agency. Office of Water. Washington, D. C., January.

FAO, (2003a). World agriculture: towards 2015/2030. Earthscan Publications Ltd, 432 pp., London.

FAO, (2003b). Unlocking the water potential of agriculture. Food and Agriculture Organization of the United Nations (FAO), 70 pp., Roma.

GARCÍA-GARIZÁBAL, I., CAUSAPÉ, J., (2010). Influence of irrigation water management on the quantity and quality of irrigation return flows. Journal of Hydrology, 385: 36-43.

GARCÍA-GARIZÁBAL, I., CAUSAPÉ, J., ABRAHAO, R., (2011). Application of the Irrigation Land Environmental Evaluation Tool for flood irrigation management and evaluation of water use. Catena, 87: 260-267.

GRAF, W.L., (2006). Downstream hydrologic and geomorphic effects of large dams on American rivers. Geomorphology, 79: 336-360.

HELSEL, D.R., HIRSCH, R.M., (2002). Statistical methods in water resources. Techniques of Water Resources Investigations, Book 4, Chapter A3, US Geological Survey, 510 pp, Reston, VA.

ISIDORO, D., QUÍLEZ, D., ARAGÜÉS, R., (2003). Sampling strategies for the estimation of salt and nitrate loads in irrigation return flows: La Violada Gully (Spain) as a case study. Journal of Hydrology, 271: 39-51.

ISIDORO, D., QUÍLEZ, D. ARAGÜÉS, R., (2006). Environmental Impact of Irrigation in La Violada District (Spain): I. Salt Export Patterns. Journal of Environmental Quality, 35: 766-775.

KURUNC, A., YUREKLI, K., OKMAN, C., (2006). Effects of Kilickaya Dam on concentration and load values of water quality constituents in Kelkit Stream in Turkey. Journal of Hydrology, 317: 17-30.

MMARM, (2010). ESYRCE: Encuesta sobre Superficies y Rendimientos de Cultivos. Informe de los regadíos en España. Ministerio de Medio Ambiente y Medio Rural y Marino (MMARM). Secretaría General Técnica. Subsecretaría, 30 pp., Madrid.

PLAYÁN, E., SALVADOR, R., FACI, J.M., ZAPATA, N., MARTÍNEZ-COB, A., SÁNCHEZ, I., (2005). Day and night wind drift and evaporation losses in sprinkler solid-sets and moning laterals. Agricultural Water Management, 76 (3): 139-159.

QIN, D., QIAN, Y., HAN, L., WANG, Z., LI, C., ZHAO, Z., (2011). Assessing impact of irrigation water on groundwater recharge and quality in arid environments using CFCs, tritium and stable isotopes, in the Zhangye Basin, Northwest China. Journal of Hydrology, 405: 194-208.

SEN, P. K. (1968). Estimates of the regression coefficient based on Kendall’s tau. Journal of the American Statistical Association, 63: 1379-1389.

WHAL, T., (2000). Winflume user’s manual. Software para el diseño y calibración de aforadores de garganta larga y vertederos de cresta ancha para medición de descargas en canales abiertos. 49 pp., United States Department of the Interior.




DOI: https://doi.org/10.18172/cig.1284

Copyright (c) 2013 J. Causapé, D. Merchán, R. Abrahão, I. García-Garizábal

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© Universidad de La Rioja, 2013

ISSN 0211-6820

EISSN 1697-9540