Model to Forecast Maximum Flows in On-Demand Irrigation Distribution Networks
Publication: Journal of Irrigation and Drainage Engineering
Volume 133, Issue 3
Abstract
A model is developed using data from an on-demand pressurized water distribution network located in sector VIII of the Genil-Cabra irrigation district of Santaella, Córdoba (southern Spain), to simulate an irrigation season and calculate the flows that circulate in the system at any given time during the irrigation day. Using the results obtained by the model, water demand frequencies can be estimated. These results are compared to those attained by Clément’s and Mavropoulos’s formulas. This procedure enables us to determine to what extent it is possible to adjust statistical distributions to the demand obtained by both models and to verify if the hypotheses upon which these models are based are, in fact, fulfilled. Moreover, we are able to study which periods are the most appropriate for determining peak demand. Our results show that the statistical methods slightly underestimate demand because demand tends to be concentrated at two peak times during the day: one at mid-morning and another in the late afternoon. Nonetheless, the design flow obtained by the models is valid for designing the system. After studying the demand frequencies, we concluded that a better fit is achieved when a more flexible distribution such as the gamma distribution is used.
Get full access to this article
View all available purchase options and get full access to this article.
References
Allen, R. G., Pereira, L. S., Raes, D., and Smith, M. (1998). “Crop evapotranspiration: Guidelines for computing crop water requirements.” FAO irrigation and drainage paper no. 56, Rome, Italy.
Camacho, E., Reca, J., López, R., and Roldán, J. (1998). “Caudales de proyecto en una red de riego.” IV Congreso Internacional de Ingeniería de Proyectos, Córdoba, Spain.
Clément, Ŕ. (1966). “Calcul des débits dans les réseaux d’irrigation fonctionant a la demande.” Houille blanche, 5.
Clemmens, A. J. (1986). “Canal capacities for demand under surface irrigation.” J. Irrig. Drain. Eng., 112(4), 331–347.
Colectividad, de Santaella. (1998). Memoria y presupuesto de la campaña 1.997/98, Spain.
Hargreaves, G. H., and Samani, Z. A. (1985). “Reference crop evapotranspiration from temperature.” Appl. Eng. Agric., 1(2), 96–99.
Lamaddalena, N., and Sagardoy, J. A. (2000). “Performance analysis of on-demand pressurized irrigation systems.” FAO irrigation and drainage paper 59, Rome, Italy.
Mavropoulos, T. I. (1996). “Sviluppo di una nuova formula per il calcolo delle portate di punta nelle reti irrigue con esercizio alla domanda.” Riv. di Irr. E Dren., 44(2), 27–35.
Monserrat, J., Poch, R., Colomer, M. A., and Mora, F. (2004). “Analysis of Clément’s first formula for irrigation distribution networks.” J. Irrig. Drain. Eng., 130(2), 99–105.
Raughuwanshi, N. S., and Wallender, W. W. (1994). “Stochastic seasonal furrow irrigation model.” Am. Soc. of Agric. Engrs., Paper No. 94-2021, ASAE, St. Joseph, Mich.
Reca, J., Martínez, J., Roldán, J., and Callejón, J. L. (2002). “Análisis de la fiabilidad de una red de riego en función de la simultaneidad de la demanda.” Ingeniería del Agua, 9(2), 157–162.
Rodríguez, J. A., Camacho, E., and López, R. (2000). “Caracterización de la demanda para el cálculo hidráulico de una red de riego. Aplicación al sector VIII del Genil-Cabra.” Escuela Técnica Superior de Ingenieros Agrónomos y de Montes, Universidad de Córdoba, Spain.
Rossman, L. A. (2000). EPANET 2. Users’ manual, U.S. Environmental Protection Agency.
Verschaeren, K. (2000). “Caudales en sistemas de distribución de agua para riego a la demanda.” Escuela Técnica Superior de Ingenieros Agrónomos y de Montes, Universidad de Córdoba, Spain.
Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 133 • Issue 3 • June 2007
Pages: 222 - 231
Copyright
© 2007 ASCE.
History
Received: Dec 28, 2004
Accepted: Aug 25, 2006
Published online: Jun 1, 2007
Published in print: Jun 2007
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.