Your search found 30 records
1 Lele, S. N.; Patil, R. K. 1993. Innovations in canal management and operation for better water deliveries. In HR Wallingford. Maintenance and operation of irrigation/drainage schemes for improved performance: papers presented to the Asian Regional Symposium held in Beijing, People's Republic of China, 24-27 May 1993. Wallingford, Oxfordshire, UK: HR Wallingford. pp.7:1-17.
(Location: IWMI HQ Call no: 631.7.1 G570 MAI Record No: H012699)
A reliable and equitable water supply to the tertiary units is a necessity for efficient and economic utilization of waters in major irrigation projects. The management of water through prevailing upstream control has major limitations. Downstream control is, no doubt efficient, but requires heavy investments and restructuring of canal systems. The solution therefore lies in centering operational management on the constant volume concept. This concept requires marginal improvements in canals and comparatively less capital investments and could be converted in downstream control, when the environment becomes suitable. Another advantage is that the concept can be introduced in phases. With this approach, water can be released simultaneously to head and tail reaches, response time is reduced, water is stored and conserved when not needed, water can be delivered to various sub-commands in any desired frequency and damages to canal linings are minimized. The system would need centralized control, a quick communication system and preferably organized farmers groups, for reducing supply points. Even though the control is centralized for the main system management, the irrigators have the most flexibility as they can select the flow rates and duration of each irrigation. The system is thus user-oriented with arranged demand, without infringing the central control operations.
2 Hin-Fatt Cheong. 1992. Discharge coefficient of lateral diversion from trapezoidal channel. Water Resources Journal, March:56-64.
(Location: IWMI-HQ Call no: PER Record No: H012980)
The discharge coefficient of a lateral opening in a prismatic trapezoidal main channel is determined for subcritical flow conditions from considerations of the conservation of energy and the conservation of momentum. The latter requires an empirical relationship for the local downstream component of the spillage velocity with the local downstream velocity in the main part of the channel. The discharge coefficients obtained by both considerations for a broad range of Froude numbers, combination of both side slopes of IV:mH with m = 0, 0.5, 1.0, and 2.0, and different lengths of lateral opening are found to be nearly the same. The measured water depth just downstream of the lateral opening is not recommended for use in the numerical determination of the discharge coefficient and the reasons are discussed in detail. The discharge coefficient is found to be related to the upstream Froude number and this relationship is empirically established.
3 Bari, M. F. 1993. Model study of downstream erosion protection by a large regulator. Journal of Irrigation Engineering and Rural Planning, 25:58-77.
Erosion ; Downstream control ; Models ; Open channels ; Hydraulic structures / Bangladesh / Muhuri Irrigation Project
(Location: IWMI-HQ Call no: PER Record No: H013432)
4 Ankum, P. 1992. Classification of flow control systems for irrigation. In Feyen, J.; Mwendera, E.; Badji, M. (Eds.), Advances in planning, design and management of irrigation systems as related to sustainable land use: Proceedings of an International Conference organized by the Center for Irrigation Engineering of the Katholieke Universiteit Leuven in cooperation with the European Committee for Water Resources Management, Leuven, Belgium, 14-17 September 1992. Vol. 1. Leuven, Belgium: Center for Irrigation Engineering. pp.265-274.
(Location: IWMI-HQ Call no: 631.7.1 G000 FEY Record No: H014355)
In order to maintain an effective water management in irrigation systems, methods and means of flow control have developed significantly in the past decades. However, it is still not yet understood what type of flow control system should be applied in a specific irrigation system, and under what circumstances. This article presents a classification of flow control in irrigation main systems, based on the different control parameters. A major division can be made into systems with (i) no management, (ii) central management, and (iii) self management. The term "self management" means that the system itself converges to a new equilibrium state. The regulation of these systems can be either (i) no regulation, (ii) manually or (iii) automatically, whereas automatic regulation is not similar to self management. Control systems can be classified into: proportional control, upstream control, downstream control, volume control, ELFLO control and CARDD control, each of them having their advantages and disadvantages.
5 Liu, F.; Feyen, J.; Berlamont, J. 1994. Downstream control algorithm for irrigation canals. Journal of Irrigation and Drainage Engineering, 120(3):468-483.
(Location: IWMI-HQ Call no: PER Record No: H014410)
A downstream control algorithm for on-demand operation of irrigation canal system is presented. A constant water level is maintained at the downstream end of the pool. The approach is based on an explicit finite-difference solution procedure of the St. Venant equations. The upstream gate settings are corrected according to the water level and the flow rate at the information nodes along the canal. The method is illustrated for the control of a canal pool bounded by an upstream gate and a downstream gate or pump. The effectiveness of the control has been tested using an unsteady-flow simulation model that is based on the complete St. Venant equations and the implicit Preissmann scheme. The simulation results show that the proposed control method can cope with rapid variations of water demand and unknown disturbances in the system. The influence of the number of information nodes and assessment of the physical parameters of the system on the response of the system has been investigated. Unless the estimated physical parameters of the system are too far from their actual values, an effective control can be achieved by measuring the water level and estimating the flow rate only at the most upstream and downstream ends of the pool.
6 Schuurmans, J.; Schuurmans, W.; van Leeuwen, J. 1992. Improved real time control of water deliveries. In Feyen, J.; Mwendera, E.; Badji, M. (Eds.), Advances in planning, design and management of irrigation systems as related to sustainable land use: Proceedings of an International Conference organized by the Center for Irrigation Engineering of the Katholieke Universiteit Leuven in cooperation with the European Committee for Water Resources Management, Leuven, Belgium, 14-17 September 1992. Vol. 2. Leuven, Belgium: Center for Irrigation Engineering. pp.485-494.
Water delivery ; Regulated flow ; Downstream control ; Simulation ; Computer techniques ; Irrigation canals / USA / California
(Location: IWMI-HQ Call no: 631.7.1 G000 FEY Record No: H014429)
7 Ankum, P. 1993. Canal storage and flow control methods in irrigation. In ICID, 15th International Congress on Irrigation and Drainage, The Hague, The Netherlands, 1993: Water management in the next century. Transactions: Vol.1-B, Question 44, R36-R72: Planning and design of irrigation and drainage systems. New Delhi, India: ICID. pp.663-679.
(Location: IWMI-HQ Call no: ICID 631.7 G000 ICI Record No: H015236)
8 Liu, F.; Feyen, J.; Berlamont, J. 1995. Downstream control of multireach canal systems. Journal of Irrigation and Drainage Engineering, 121(2):179-190.
(Location: IWMI-HQ Call no: PER Record No: H016375)
9 El Quosy, D. E. D. 1995. Control systems through water level. In Japanese Institute of Irrigation and Drainage, Proceedings of the Tokyo Symposium on Sustainable Agriculture and Rural Development: Agriculture for our planet, Tokyo, Japan, 27-29 November 1995. pp.313-327.
Water control ; Irrigation operation ; Irrigation canals ; Flow control ; Canal regulation techniques ; Downstream control / Egypt / Nile River
(Location: IWMI-HQ Call no: 338.1 G000 JAP Record No: H017993)
10 Burt, C. M.; Plusquellec, H. L. 1990. Water delivery control. In Hoffman, G. J.; Howell, T. A.; Solomon, K. H. (Eds.), Management of farm irrigation systems. St. Joseph, MI, USA: ASAE. pp.374-423.
Water delivery ; Control methods ; Irrigation scheduling ; Canal regulation techniques ; Downstream control ; Computer techniques ; Pipes ; Weirs ; Irrigation design
(Location: IWMI-HQ Call no: 631.7.8 G000 HOF Record No: H018313)
11 Pongput, K. 1996. Unsteady flow simulation of Pehur high-level canal including automatic downstream water level control gates: consultancy report. Lahore, Pakistan: International Irrigation Management Institute (IIMI). iii, 52p. (IWMI Pakistan Report C-004 / IIMI Pakistan Report C-004) [doi: https://doi.org/10.3910/2009.553]
Irrigation canals ; Canal regulation techniques ; Flow control ; Downstream control ; Simulation models ; Case studies / Pakistan / Pehur
(Location: IWMI-HQ Call no: IIMI 631.7.1 G730 PON Record No: H019404)
(2 MB)
12 Snellen, W. B. 1996. Irrigation scheme operation and maintenance. Rome, Italy: FAO. vi, 48p. (Irrigation water management training manual no.10)
Irrigation programs ; Irrigation operation ; Maintenance ; Irrigation management ; Planning ; Irrigation scheduling ; Downstream control ; Water distribution ; Water user associations ; Economic aspects ; Costs
(Location: IWMI-HQ Call no: 631.7.1 G000 SNE Record No: H020794)
13 Parrish, J. B. 1997. Idealized automated control of sloping canals. Journal of Irrigation and Drainage Engineering, 123(4):270-278.
(Location: IWMI-HQ Call no: PER Record No: H021002)
14 Depeweg, H.; Bekheit, K. H. 1997. Evaluation of proposed mesqa improvements. Irrigation and Drainage Systems, 11(4):299-322.
Irrigation canals ; Flow control ; Downstream control ; Rehabilitation ; Water user associations ; Water distribution ; Water control ; Design criteria ; Simulation ; Computer models ; Pipes ; Pumps ; Performance evaluation ; Performance indexes / Egypt / Bahr El Saidi
(Location: IWMI-HQ Call no: PER Record No: H021826)
15 El Quosy, D. E. D. 1997. Change from fixed rotation to continuous flow. In FAO. RAP, Modernization of irrigation schemes: Past experiences and future options: Proceedings of the Expert Consultation, Bangkok, 26-29 November 1996. Bangkok, Thailand: FAO. RAP. pp.113-122. (Water report 12 / RAP publication 1997/22)
Water distribution ; Continuous flow ; Irrigation scheduling ; Downstream control ; Water user associations ; Water delivery ; Irrigation canals ; Equity / Egypt
(Location: IWMI-HQ Call no: 631.7.7 G000 FAO Record No: H020086)
16 El Ghali, A.; Belguenani, H. 1997. Regulations of main canals in la Moulouya Scheme: case study on Triffa Downstream Main Canal. In Renault, D. (Ed.). Modern techniques for manual operation of irrigation canals. Proceedings of the Fourth International ITIS [Information Techniques for Irrigation Systems] Network Meeting, Marrakech, Morocco, 25-27 April 1997. pp.122-128.
Irrigation canals ; Canal regulation techniques ; Downstream control ; Case studies / Morocco / Moulouya Scheme
(Location: IWMI HQ Call no: IIMI 631.7.1 G000 REN Record No: H021930)
(0.34 MB)
17 El Ghali, A.; Belguenani, H. 1997. Regulation des canaux principaux dans le perimetre de la Moulouya cas du canal principal bas service des Triffa. In French. [Regulations of main canals in la Moulouya Scheme: case study on Triffa Downstream Main Canal]. In Renault, D. (Ed.). Modern techniques for manual operation of irrigation canals. Proceedings of the Fourth International ITIS [Information Techniques for Irrigation Systems] Network Meeting, Marrakech, Morocco, 25-27 April 1997. pp.129-134.
Irrigation canals ; Canal regulation techniques ; Downstream control ; Case studies / Morocco / Moulouya Scheme / Triffa Downstream Main Canal
(Location: IWMI HQ Call no: IIMI 631.7.1 G000 REN Record No: H021931)
(0.29 MB)
18 Schuurmans, J.; Dijkstra, S.; Brouwer, R. 1992. Improved real-time control of water deliveries through decoupling. In IIMI; CEMAGREF. International Workshop on The Application of Mathematical Modelling for the Improvement of Irrigation Canal Operation, October 26-30, 1992, Montpellier, France. pp.285-295.
Irrigation canals ; Canal regulation techniques ; Water delivery ; Downstream control ; Computer models ; Simulation models ; Evaluation / Netherlands / USA / Cal Poly Canal
(Location: IWMI-HQ Call no: IIMI 631.7.1 G000 IIM Record No: H022426)
(0.21 MB)
19 Sugiharto, B. 1998. An optimization model for operation of the Citarum Cascade System. In ICID, The Tenth Afro-Asian Regional Conference Proceedings: Water and land resources development and management for sustainable use, Denpasar, Bali, Indonesia, 19-24 July 1998. Volume II - B. Jakarta, Indonesia: Indonesian National Committee on Irrigation and Drainage (INACID) pp.B8:1-16.
Water resource management ; Irrigation programs ; Water supply ; Hydroelectric schemes ; Water storage ; Reservoir operation ; Stream flow ; Downstream control ; Flood control ; Optimization ; Models ; Design / Indonesia / Java / Jatiluhur Water Scheme / Citarum Cascade System
(Location: IWMI-HQ Call no: ICID 631.7 G570 ICI Record No: H022939)
20 Sri Lanka. Irrigation Department; IIMI. SLNP. 1996. National Irrigation Rehabilitation Project ALA/91/07: Establishment of Irrigation Research Management Unit - Contract no.669/91/73000/102/141-01 - Final report. Draft report. vii, 83p.
Irrigation management ; Institution building ; Research institutes ; Infrastructure ; Agricultural research ; Research policy ; Research priorities ; Training ; Technology transfer ; Irrigation programs ; Small scale systems ; Development projects ; Rehabilitation ; Farmer participation ; Monitoring ; Privatization ; Distributary canals ; Maintenance ; Performance evaluation ; Women ; Farmers' associations ; Downstream control ; Water lifting ; Wells ; Conjunctive use ; Tank irrigation ; Computer models ; Simulation models ; Flow control / Sri Lanka / Hambantota District / Kattadiya Wewa / Kirinda / Kurunegala District / Lihinigiriya Tank / Wedakada / Tittawella / Matale District / Bulana Wewa / Galewala / Henwalayagama Wewa / Sigiriya / Moneragala District / Senasuma Wewa / Wellawaya / Paragahalanda Wewa / Bibile / Nuwara Eliya District / Kande Ela Reservoir / Buttala Anicut Scheme / Rajangana Scheme / Badagiriya Tank Scheme / Kekanadura Scheme
(Location: IWMI-HQ Call no: IIMI 631.7.3 G744 SRI Record No: H023104)
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