Your search found 4 records
1 Palmer, J. D.; Clemmens, A. J.; Dedrick, A. R. 1989. Several sources of nonuniformity in irrigation delivery flows. Journal of Irrigation and Drainage Engineering, 115(6):920-937.
(Location: IWMI-HQ Call no: PER Record No: H05826)
A lateral canal in a southwestern U. S. irrigation district was instrumented for continuous monitoring. Deliveries were flexibly scheduled; farmers arranged timing, rate and duration with the district. The distribution of measured variables showed that the lateral was operated under a wide variety of demand and operational conditions and that farm delivery flows were frequently not uniform due to changing conditions along the lateral. Flows that are unpredictably variable affect the performance and evaluation of on-farm application systems and, unless controlled, can negate the benefit of flexible scheduling (more precise management). Statistical analysis of 286 deliveries to nine farm turnouts identified a number of sources on nonuniform flows which were a combination of canal hydraulics and operational characteristics. Time of year that deliveries occurred was shown to affect uniformity, as were median flow rate, delivery duration, and location of turnouts, both within a pool between two check structures and along the lateral. Identifying source of nonuniformities is an important first step in devising structure and operational control to improve delivery uniformity.
2 Palmer, J. D.; Clemmens, A. J.; Dedrick, A. R. 1991. Field study on irrigation delivery performance. Journal of Irrigation and Drainage Engineering, 117(4):567-577.
(Location: IWMI-HQ Call no: PER Record No: H08809)
3 Palmer, J. D.; Clemmens, A. J.; Dedrick, A. R.; Replogle, J. A.; Clyma, W. 1991. Delivery system performance case study: Wellton Mohawak irrigation and drainage district, USA. Irrigation and Drainage Systems, 5(1):89-109.
(Location: IWMI-HQ Call no: PER Record No: H08869)
4 Palmer, J. D.. 1990. Delivering appropriate quantities of water to the farm. In Steven C. Harris (Ed.), Irrigation and drainage: Proceedings of the 1990 ASCE National Conference. pp.242-249.
(Location: IWMI-HQ Call no: P 2772 Record No: H012739)
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