Deferred Drainage—Prudent Policy or Tactical Folly?by J. N. Christopher, US Bureau of Reclamation, Denver, CO, USA,
B. K. Cummins, US Bureau of Reclamation, Denver, CO, USA,
Abstract: The practice of deferring drains has not always worked out as planned. This is particularly true of large outlet drains such as the San Luis Drain in the Central Valley of California and the Left Bank Outfall Drain in Pakistan. Even smaller systems, field drains as well as outlets, are affected by economics, but they do not have the notoriety or involve social/environmental issues on as large a scale as the former projects. The purpose of this paper is to explore what some of these changes have been in the last 25 years and examine whether 'deferred drainage' is, in fact, prudent planning or a tactical blunder in terms of assuring permanent irrigated agriculture as required by Reclamation law.
Subject Headings: Drainage | Water reclamation | Irrigation water | Economic factors | Developing countries | Soil analysis | Irrigation | Drainage systems | North America | California | Asia | United States | Pakistan
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