Your search found 702 records
1 Evans, R. G. 1996. Designing tree fruit water application systems. Irrigation Journal, 46(7):8-14.
Horticulture ; Water requirements ; Irrigation requirements ; Sprinkler irrigation ; Irrigation equipment ; Design ; Soil properties ; Crop production ; Pumps ; Pipes ; Irrigated farming
(Location: IWMI-HQ Call no: PER Record No: H019684)
2 Maurya, P. R.; Sachan, R. S. 1984. Large and small-scale irrigation systems in Nigeria: A comparative study. In M. J. Blackie, Ed., African Regional Symposium on Small Holder Irrigation, 5-7 September 1984 (pp. 273-286). London: Hydraulics Research Ltd.
Planning ; Water resources ; Irrigated farming ; Design ; Land tenure ; Labor ; Small scale systems ; Cropping systems ; Evaluation / Nigeria
(Location: IWMI-HQ Call no: 631.7.3 G100 BLA Record No: H0191)
3 Trout, T.; Kemper, W. D.; Aust, R. 1980. Development and design of watercourse junction jet pumps. Fort Collins, CO, USA: Colorado State University. xv, 113p. (Water management technical report no.64)
(Location: IWMI-HQ Call no: 631.7.1 G730 TRO Record No: H0343)
Many farmers in Pakistan experience difficulties due to insufficient head or elevation of the water in their irrigation system. This problem is especially acute on public tubewell supplemented watercourses. A low head jet pump device which utilizes the excess energy of tubewell water to raise the elevation of surface canal water was developed to help solve this problem. Both laboratory and field studies are described which show that these watercourse junction jet pumps can solve the problem, even though their efficiencies range from only 14 and 18%, and can be built inexpensively. Their primary use will be to: (a) allow canal turnouts, which are often submerged when the tubewell is turned on, to flow freely; or (b) irrigate, or more efficiently irrigate, the higher elevation croplands. Both graphical and analytical procedures are described for the design of jet junctions.
4 Trout, T. J. 1979. Factors affecting losses from Indus basin Irrigation channels. Fort Collins, CO, USA: Colorado State University. xxi, 201 p. (Water management technical report no. 50)
Flumes ; Flow ; Watercourses ; Design ; Water loss ; Water conveyance ; Tertiary level irrigation / Pakistan
(Location: IWMI-HQ Call no: 631.7.1 G730 TRO Record No: H0330)
Tertiary irrigation conveyance systems (watercourses) in the Indus Basin lose 30 to 50 percent of their flow. Watercourse systems were studied in depth by ponding and inflow-outflow methods to determine functional relationships between several measurable parameters and the loss rates. The objective was to determine simple design changes that are low cost and can lead to increased conveyance efficiencies in the eastern channels. Statistical analysis of the collected data indicated that: 1. Watercourse loss rates (lps/100m) increase with, but slightly less than proportional to, the usual flow rate in the channel; 2. Loss rates are lower in more often used channels; 3. Loss rates are higher in elevated channels; 4. Loss rates are very sensitive to changes in flow depths, and thus increase with upward fluctuations in flow rates or roughness coefficients; and 5. Intake rates into upper bank soils are very high and are apparently caused by extensive rodent and insect burrows inside the banks.
5 Kemper, W. D.; Clyma, W.; Skogerboe, G. V.; Trout, T. J. 1980. Watercourse improvement research in Pakistan. Fort Collins, CO, USA: Colorado State University. xiii, 93p. (Water management technical report no.56)
Watercourses ; Farmer participation ; Tube well irrigation ; Design ; Research ; Investment ; Water loss / Pakistan
(Location: IWMI-HQ Call no: 631.7.7 G730 KEM Record No: H0336)
This research program was funded by USAID, organized by CSU and sent out to identify good investments for developing countries in water management. Loss of almost half of the water from watercourses was identified as a primary waste of irrigation water which is a limiting factor in crop production in Pakistan. Physical causes of the loss were identified as high porosity of upper portions of the banks due to burrowing of soil for weekly construction of dams, and rising levels of water in the watercourse due to vegetative growth and sedimentation. Difficulty in organizing farmers to accomplish regular cleaning and repair was identified as an underlying sociologic cause of the loss. Experimental masonry and concrete watercourses were built by the government and given to the farmers. They were too expensive to provide a nationwide solution. The farmers did not appreciate and maintain them because they had no investment therein. Other lined watercourses on which the government paid for materials and the farmers provided labor were better appreciated and maintained, but took longer to build and still required large amounts of cement and were too costly for a national program. Cooperative improvement of the earthen channels by the farmers with the government providing the materials and design for concrete control structures at the junctions was developed as a program which had a benefit:cost ratio of at least 3 to 1 and was eagerly accepted by the farmers in a study which involved a series of case histories. Subsequent studies indicated that a good and regular cleaning and repair program would save almost as much water and provide higher benefits with much lower government input. However, the watercourse improvement plan with its concrete control structures was more eagerly accepted by the farmers. Full benefits of the improvement were obtained only by those farmers who organized themselves to clean and maintain their watercourses regularly.
6 Trout, T. J.; Kemper, W. D. 1980. Watercourse improvement manual. Fort Collins, CO, USA: Colorado State University. xxii, 244p. (Water management technical report no.58)
Evaluation ; Water loss ; Silt ; Design ; Irrigation efficiency ; Watercourses ; Rehabilitation / Pakistan
(Location: IWMI-HQ Call no: 631.7.8 G730 TRO Record No: H0344)
The manual assists both national and donor agency planners to determine the need for and carry out a program to improve the tertiary irrigation conveyance systems. Topics covered include evaluating and diagnosing problems in the present channel systems, proposing and testing solutions to the diagnosed problems, combining the solution techniques into improvement strategies, evaluating the improvement strategies and developing the institutions necessary to carry out the improvement programs. The manual deals both with processes, which will be of primary interest to the planners; and techniques, which would be useful to the engineers, economists and sociologists.
7 Levine, G.; Coward, E. W. Jr. 1985. Irrigation water distribution: Implications for design and operation. Unpublished manuscript. 130p.
(Location: IWMI-HQ Call no: 631.7.1 G000 LEV Record No: H0527)
8 Murray-Rust, H. D. 1984. Water management synthesis II project: Bangladesh - Final report. Ithaca, NY, USA: Cornell University. 26 p. (Water management systems project paper no. 1)
Water resources development ; Irrigation engineering ; Water management ; Irrigation programs ; Design / Bangladesh
(Location: IWMI-HQ Call no: 631.7 G584 MUR Record No: H0525)
9 Benami, A.; Ofen, A. 1984. Irrigation engineering: sprinkler, trickle, surface irrigation - principles, design and agricultural practices. Bet Dagan, Israel: Irrigation Engineering Scientific Publications. 257p.
Irrigation engineering ; Sprinkler irrigation ; Surface irrigation ; Design ; Irrigated farming ; Drip irrigation
(Location: IWMI-HQ Call no: 631.7.1 G000 BEN Record No: H0544)
10 Keller, J.; Bishop, A.; Weaver, T. F. 1981. Irrigation development options and investment strategies for the 1980's: Pakistan. Logan, UT, USA: Utah State University. 52p. (Water management synthesis report no.4)
(Location: IWMI-HQ Call no: 631.7.8 G730 KEL Record No: H0564)
11 Van Arsdale, P. W.; Butler, R. A.; Baskett, R. S.; Mohammed, R. A.; Mann, D. P.; Walz, T. H. 1984. Evaluation of project no. 519-0184 USAID/El Salvador, Office of Small-Scale Irrigation. Small Farm Irrigation Systems Project. Fort Collins, CO, USA: University Services Center. Colorado State University. 144p. (Water management synthesis report no.29)
Cropping systems ; Irrigation management ; Design ; Small scale systems ; Farmer managed irrigation systems / El Salvador
(Location: IWMI-HQ Call no: 631.7.8 G355 VAN Record No: H0565)
12 Ahmad, N. 1979. Tubewell theory and practice. Lahore, Pakistan: Pakistan Academy of Sciences. 453p. (Pakistan Academy of Sciences Monograph 4)
(Location: IWMI-HQ Call no: 631.7.1 G730 AHM Record No: H0581)
13 Framji, K. K.; Garg, B. C.; Kaushish, S. P. 1984. Design practices of open drainage channels in an agricultural land drainage system. New Delhi, India: ICID. xiii, 343 p.
(Location: IWMI-HQ Call no: 631.7.1 G000 FRA Record No: H0703)
14 Framji, K. K. (Ed.) 1972. Design practices of irrigation canals in the world. New Delhi, India: ICID. [322 p.]
(Location: IWMI-HQ Call no: 631.7.1 G000 FRA Record No: H0662)
15 Plusquellec, H. L.; Wickham, T. 1985. Irrigation design and management: Experiences in Thailand and its general applicability. Washington, DC, USA: World Bank. x, 76 p. (World Bank technical paper no. 40)
Design ; Irrigation management ; Development ; Irrigated farming ; Tertiary level irrigation ; Water distribution / Thailand
(Location: IWMI-HQ Call no: 631.7.1 G750 PLU Record No: H0696)
16 Svendsen, M.; Macura, D.; Rawlings, J. 1984. Nepal's small and medium scale irrigation sector: Report of the special US review team. USAID. [58 p.]
Irrigated farming ; Water resources development ; Design ; Maintenance ; Irrigation operation ; Farmer managed irrigation systems / Nepal
(Location: IWMI-HQ Call no: 631.7.1 G726 SVE Record No: H0558)
17 Robinson, A. R. 1982. Farm irrigation structures. Fort Collins, CO, USA: Colorado State University. 29 p. (Water management synthesis project planning guide no. 4)
(Location: IWMI-HQ Call no: 631.7.6.2 G000 ROB Record No: H0675)
18 Easter, K. W.; Martin, L. R. (Eds.) 1977. Seminar on Water Resources Problems in Developing Countries. St. Paul, MN, USA: Economic Development Center. Department of Agricultural and Applied Economics, University of Minnesota. 107 p. (Economic Development Center bulletin no. 3)
Water resources ; Developing countries ; Irrigation systems ; Training ; Planning ; Water management ; Water allocation ; Design ; Economic growth
(Location: IWMI-HQ Call no: 333.91 G000 EAS Record No: H0760)
19 Zazueta, F. S.; Smajstrla, A. G. 1995. A simple method to design tapered sloping manifolds. In Lamm, F. R. (Ed.), Microirrigation for a changing world: Conserving resources/preserving the environment: Proceedings of the Fifth International Microirrigation Congress, Hyatt Regency Orlando, Orlando, Florida, April 2-6, 1995. St. Joseph, MI, USA: ASAE. pp.425-430.
(Location: IWMI-HQ Call no: 631.7 G000 LAM Record No: H018882)
20 Levine, G. 1982. Relative water supply: An explanatory variable for irrigation systems. Washington, DC, USA: USAID. 28p.
(Location: IWMI-HQ Call no: 631.7.1 G000 LEV Record No: H0849)
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