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| Title |  |
Performance of two transferred modules in the
Lagunera region: water relations. (Research report, 15 pages) |
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| Author | G. Levine, A. Cruz Galvan, D. Garcia, C. Garcés-Restrepo, and S. Johnson III | |||
| Organisation | International Water Management Institute | |||
| Year | 1998 | |||
| Summary/ Introduction |
This report evaluates the degree of success of water users in managing water allocations and deliveries in two modules in Irrigation District 017, Coahuilla-Durango, Mexico. The users received O&M responsibilities in 1993. Groundwater, while important in the region, is not under the jurisdiction of the user groups, and is not reported here. Policies and practices are evaluated from the standpoints of the nature of the planning rules, consistency, equity, and efficiency in implementation of the plans. Deliveries were measured at module and field headgates, and yields were measured by sampling. One year’s results indicate that the joint management by the users and the Comisión Nacional del Agua has been reasonably successful in implementing water allocation and cropping plans without location (head/tail) or type of user (ejido/private) biases. Relatively low Relative Water Supplies at the parcel level suggest there may be irrigated areas not officially recorded. Overall system water efficiency was approximately 60 percent while field irrigation efficiency averaged 68 percent, using CROPWAT estimations of evapotranspiration. Within-field yield differences (head/end) were approximately 10 percent, suggesting modest possibilities for yield improvement through land levelling or other forms of within-field irrigation improvement. | |||
Complete document (391k) |
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