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Case Study?Open Pipeline System, Coachella Valley Water District

by John L. Merriam, California Polytechnic State Univ, San Luis Obispo, CA, USA,



Document Type: Proceeding Paper

Part of: Hydropower: Recent Developments

Abstract:

A supervisory canal control system installation was started in 1966, seventeen years after start up, and a major upgrading was completed in 1983. The canal delivery system now has a central control system of great capability and appreciable in-canal and reservoir storage capacity. The 24 hour duration limited rate of 87 L/s (3. 0 cfs) restricted arranged schedule is still used for water delivery to each 16 ha (40 acre) unit. To alleviate on-farm problems some farmers have, at their own expense, installed on-farm reservoirs and pipelines supplementing the district lines to increase supply capacity. By so doing, they have obtained a Limited Rate Demand schedule. In operation the present system must have the current day's flow set at the canal. The anticipated system would supersede the overflow baffles in the turnout stands with Harris float valves or use a beside-the-line float outlet. These and other aspects of the system are discussed.

Subject Headings: Concrete pipes | Control systems | Irrigation systems | Canals | Water storage | Water pipelines | Irrigation districts

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