Your search found 58 records
1 Clemmens, A. J.; Replogle, J. A. 1980. Constructing simple measuring flumes for irrigation canals. Washington, DC, USA: US. Government Printing Office. 13 p. (Farmers Bulletin (US. Department of Agriculture) no. 2268)
(Location: IWMI-HQ Call no: F 631.7.1 G000 CLE Record No: H01231)
2 Bos, M. G.; Replogle, J. A.; Clemmens, A. J.. 1984. Flow measuring flumes for open channel systems. New York, NY, USA: John Wiley & Sons. xiii, 321p.
(Location: IWMI-HQ Call no: 627.042 G000 BOS Record No: H01820)
3 Replogle, J. A.; Fry, B. J.; Clemmens, A. J.. 1987. Effects of no level placement on accuracy of long-throated flumes. Journal of Irrigation and Drainage Engineering, 113(4):585-594.
(Location: IWMI-HQ Call no: PER Record No: H03670)
4 Replogle, J. A.; Clemmens, A. J.. 1988. Automatic regulation of canal offtakes. Irrigation and Drainage Systems, 1(2):123-142.
Irrigation canals ; Flow ; Water control ; Mechanization ; Control systems ; Water delivery ; Weirs ; Automation ; Discharges
(Location: IWMI-HQ Call no: PER Record No: H02684)
5 Clemmens, A. J.. 1988. Method for analyzing field scale surface irrigation uniformity. Journal of Irrigation and Drainage Engineering, 114(1):74-88.
(Location: IWMI-HQ Call no: PER Record No: H03725)
6 Clemmens, A. J.. 1983. Canal capacities for demand under surface irrigation. Journal of Irrigation and Drainage Engineering, 112(4):331-347.
(Location: IWMI-HQ Call no: P 1297 Record No: H04441)
7 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.
8 Wang, C.; Clemmens, A. J.; Hart, W. E.; Replogle, J. A. 1988. Dynamic response of the DACL water level controller. In Proceedings of the International Conference on Irrigation System Evaluation and Water Management, Wuhan, China, 12-16 September 1988: Vols.1 & 2. Wuhan, China: Wuhan University of Hydraulic and Electrical Engineering. pp.695-712.
(Location: IWMI-HQ Call no: 631.7.8 G000 PRO Record No: H06709)
9 Katopodes, N. D.; Tang, J.; Clemmens, A. J.. 1990. Estimation of surface irrigation parameters. Journal of Irrigation and Drainage Engineering, 116(5):676-696.
(Location: IWMI-HQ Call no: PER Record No: H06875)
10 Wang, C.; Clemmens, A. J.; Hart, W. E. 1990. Dynamic response of automatic water-level controller 1: Theory. Journal of Irrigation and Drainage Engineering, 116(1):769-783.
(Location: IWMI-HQ Call no: PER Record No: H07365)
11 Clemmens, A. J.; Wang, C.; Replogle, J. A. 1990. Dynamic response of automatic water-level controller II: Application. Journal of Irrigation and Drainage Engineering, 116(6):784-796.
(Location: IWMI-HQ Call no: PER Record No: H07366)
12 Clemmens, A. J.; Bos, M. G. 1990. Statistical methods for irrigation system water delivery performance evaluation. Irrigation and Drainage Systems, 4(4):345-365.
(Location: IWMI-HQ Call no: PER Record No: H007937)
(0.86 MB)
13 Clemmens, A. J.. 1979. Control of modified demand irrigation distribution systems. Reprinted from the specialty conference on Irrigation and Drainage in the Nineteen-Eighties, ASCE/Albuquenque, New Mexico, 17-20 July 1979. pp.303-313.
(Location: IWMI-HQ Call no: P 1958 Record No: H08478)
14 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)
15 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)
16 Clemmens, A. J.. 1991. Irrigation uniformity relationships for irrigation system management. Journal of Irrigation and Drainage Engineering, 117(5):682-699.
(Location: IWMI-HQ Call no: PER Record No: H09033)
17 Clemmens, A. J.. 1985. Combined effects of trickle irrigation nonuniformity. In Drip/trickle irrigation in action: Proceedings of the Third International Drip/Trickle Irrigation Congress, Centre Plaza Holiday Inn, Fresno, California, USA, 18-21 November 1985. Vol. II: St. Joseph, MI, USA: ASAE. pp.867-872.
(Location: IWMI-HQ Call no: 631.7.1 G000 DRI Record No: H09678)
18 Clemmens, A. J.. 1992. Critical depth relations for flow measurement design. Journal of Irrigation and Drainage Engineering, 118(4):640-644.
(Location: IWMI-HQ Call no: PER Record No: H010809)
19 Clemmens, A. J; Dedrick, A. R. 1984. Irrigation water delivery performance. Journal of Irrigation and Drainage Engineering, 110(1):13p.
(Location: IWMI-HQ Call no: P 2383 Record No: H011272)
20 MSIDD DA Core Team; Dedrick, A. R.; Clemmens, A. J.; Clyma, W.; Gibson, R. D.; Levine, D. B.; Replogle, J. A.; Rish, S. A.; Ware, R. E.; Wilson, P. N. 1992. The Demonstration Interagency Management Improvement Program (MIP) for irrigated agriculture in the Maricopa-Stanfield Irrigation and Drainage District (MSIDD). Vol. 1 - The Diagnostic Analysis (DA) report of the MSIDD area MIP. Washington, DC, USA: USDA. Agricultural Research Service. ii, 97p. (IMIP document 5)
Irrigation management ; Performance evaluation ; Agricultural development ; Diagnostic techniques / USA
(Location: IWMI-HQ Call no: 631.7.8 G430 MSI Record No: H011523)
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