This paper analyzes the management problem of the conjunctive use of
surface and ground water in an irrigation system on both sides of the Lower
Yellow River. For this purpose, a stochastic dynamic programming model is
developed. In the model, the statistical characteristics of seasonal rainfall
within 2 years are considered; groundwater level control is also emphasized in
order to prevent soil salinity and waterlogging. Through computer calculations,
optimal operation policies are obtained for efficient conjunctive use
of surface and groundwater. These policies take into account the interactions
between pumping groundwater by farmers, canal diversions by irrigation system
managers, and the physical response of the stream- aquifer system, and minimize
the total operation costs.
In this paper, we take an irrigation district, the People's Victory Canal
System, as an example to illustrate the development and solution of the model.
At the same time, the effects of system parameters, including surface irrigation
efficiency and rainfall recharge coefficient, on the optimal policies or
total operation costs, are discussed. The analytical results in this example
indicate that the variation in optimal operation costs caused by the proportion
of rainfall infiltrated is small, but the effect of surface irrigation
efficiency on the costs is significant. Hence, the surface irrigation efficiency
must be increased as much as possible. Then, efficient conjunctive use
of surface and groundwater can be attained with the optimal policies.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/614178 |
| Date | January 1987 |
| Creators | Lingen, Carl, Buras, Nathan |
| Contributors | Department of Hydrology & Water Resources, The University of Arizona |
| Publisher | Department of Hydrology and Water Resources, University of Arizona (Tucson, AZ) |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | text, Technical Report |
| Source | Provided by the Department of Hydrology and Water Resources. |
| Rights | Copyright © Arizona Board of Regents |
| Relation | Technical Reports on Hydrology and Water Resources, No. 87-011 |
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