Your search found 250 records
1 Indonesia. Directorate General of Water Resources Development. 1983. Data analysis. Cambridge, UK: Sir MacDonald & Partners Asia. 8p. (East Java irrigation project TM 4.3)
(Location: IWMI-HQ Call no: 631.7 G673 IND Record No: H0208)
2 Biswas, M. R.; Mandal, M. A. S. (Eds.) 1982. On-farm irrigation water management problems. Mymensingh, Bangladesh: Bureau of Socioeconomic Research Training, Bangladesh Agricultural University. xvi, 144 p.
Farming ; Irrigation programs ; Water loss ; Cost benefit analysis ; Rice ; Cropping systems ; Soil texture ; Water conveyance ; Farmers' attitudes ; On farm research / Bangladesh
(Location: IWMI-HQ Call no: 631.7.6.2 G584 BIS Record No: H0244)
3 Pakistan. Ministry of Food, Agriculture and Cooperatives. 1984. Pakistan on-farm water management programme. Islamabad, Pakistan: The Ministry. vi, 40, [12] p.
(Location: IWMI-HQ Call no: 631.7.6.2 G730 PAK Record No: H0303)
4 Renfro, R. Z. H. 1982. Economics of local control of irrigation water in Pakistan. Unpublished dissertation submitted to Colorado State University, Fort Collins, Colorado in partial fulfillment of the requirements for the degree of Doctor of Philosophy. x, 219p.
Water control ; Irrigation ; Watercourses ; Tube well irrigation ; Farmer managed irrigation systems ; Water loss ; Governmental interrelations / Pakistan
(Location: IWMI-HQ Call no: 631.7.6 G730 REN Record No: H0470)
5 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.
6 Colorado State University. Water Management Research Project. 1978. Improving irrigation water management on farms: annual technical report. Fort Collins, CO, USA: Colorado State University. [v.p.]
On farm research ; Water management ; Watercourses ; Rehabilitation ; Water user associations ; Research ; Water loss / Pakistan
(Location: IWMI-HQ Call no: 631.7.6.2 G730 COL Record No: H0322)
Reports covering periods 1 April 1977-31 March 1979; 1 April 1978-31 March 1979; 1 April 1979-31 March 1980
7 Reuss, J. O. 1980. Optimization of lengths of alternative watercourse improvement programs. Fort Collins, CO, USA: Colorado State University. xi, 49 p. (Water management technical report no. 27)
(Location: IWMI-HQ Call no: 631.7.6.2 G730 REU Record No: H0346)
8 Trout, T. J. 1982. Diagnostic problems with irrigation conveyance channels. Fort Collins, CO, USA: Colorado State University. ii, 84 p. (Videotape guide no. 1)
(Location: IWMI-HQ Call no: 631.7.6.2 G730 TRO Record No: H0353)
9 Water Management Training Institute, Lahore. 1987. A study on alternatives on watercourse lining: On farm water management programme. Lahore, Pakistan: The Institute. 16 p.
Watercourses ; Water supply ; On farm research ; Water management ; Canal linings ; Water loss ; Water user associations / Pakistan
(Location: IWMI-HQ Call no: 631.7.6.2 G730 WAT Record No: H0355)
Issued in 1987 as "Helping farmers to help themselves by organizing water users associations"
10 Westfall, D. G. 1980. Training manual for agricultural water management specialists. Fort Collins, CO, USA: Colorado State University. xiv, 670 p. (Water management technical report no. 60)
Training ; On farm research ; Water management ; Rural sociology ; Research ; Canals ; Watercourses ; Water loss ; Water conveyance / Pakistan
(Location: IWMI-HQ Call no: 631.7.6.2 G730 WES Record No: H0329)
11 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.
12 Ali, C. R.; Ashraf, M.; Trout, T.; Mohsin, W. A.; Ahmad, M.; Anwar, N. A.; Khan, M. U. 1978. Operational irrigation evaluations of three watercourse systems. Lahore, Pakistan: Pakistan Water & Power Development Authority. xi, 60p. (Pakistan Water and Power Development Authority publication no.1)
(Location: IWMI-HQ Call no: 631.7.8 G730 ALI Record No: H0351)
13 Eckert, J.; Dimick, N.; Clyma, W. 1975. Water management alternatives for Pakistan: A tentative appraisal. Fort Collins, CO, USA: Colorado State University. vii, 61p. (Water management technical report no.43 / Pakistan field report no.5)
Watercourses ; Development ; Investment ; Water loss ; Irrigation efficiency ; Water user associations ; Maintenance ; Land management ; Water management / Pakistan
(Location: IWMI-HQ Call no: 631.7.8 G730 ECK Record No: H0331)
14 Trout, T.; Bowers, S. A. 1979. Operational irrigation evaluation of Pakistan watercourse conveyance systems. Fort Collins, CO, USA: Colorado State University. xvi, 104p. (Water management technical report no.52)
Watercourses ; Flumes ; Flow measurement ; Water loss ; Seepage ; Tube well irrigation ; Evaluation / Pakistan
(Location: IWMI-HQ Call no: 631.7.8 G730 TRO Record No: H0340)
Five Pakistan watercourse systems, selected from various areas of the Indus Basin, were evaluated during complete irrigation turn rotations while operating normally. This allowed quantification of the various types of water losses, including transient condition losses such as dead storage, bank wash-outs, outlet leakage, and high initial seepage into dry channel banks.
15 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.
16 ICID. 1967. World-wide survey of experiments and results on the prevention of evaporation losses from reservoirs. New Delhi, India: ICID. vi, 144 p.
(Location: IWMI-HQ Call no: 631.7.5 G000 ICI Record No: H0519)
17 Patten, G. P.; Hussain, A.; Ali, S. 1963. Analysis of seepage losses from unlined canals in the Punjab region of West Pakistan. Report prepared by the West Pakistan Water and Power Development Authority. 29p. (West Pakistan Water and Power Development Authority technical paper no.4)
(Location: IWMI-HQ Call no: 631.7.5 G730 PAT Record No: H0586)
18 Johnson, S. H. III. 1977. The economics of precision land leveling: A case study from Pakistan. Agricultural Water Management, 1:319-331.
(Location: IWMI-India Call no: F 631.7.4 G730 JOH Record No: H0810)
This paper examines the effectiveness of a production technique, precision land leveling (PLL), to minimize the losses of water between the rivers and the plant root zone. It identifies the economic and physical benefits attributable to precision land leveling. While the work is specific to Pakistan, the implications are levant for other arid areas of the world where irrigation is practices. Two sets of fields were selected, one set that had been precision leveled and another set that had been leveled using traditional techniques. The economic analysis of precision land leveling, assuming a life of 10 years, proved to be positive but not above the two or three to one return that is usually required to persuade subsistent farmers to invest in a new technology. However, the precision land leveling acts as a catalyst and increases the efficiency of the other associated inputs. Hence, it is a more valuable investment than is indicated by simple economic analysis.
19 Johnson, S. H. III; Kemper, W. D.; Lowdermilk, M. K. 1979. Improving irrigation water management in the Indus Basin. Water Resources Bulletin, 15(2):473-495.
Maintenance ; Irrigation management ; Canals ; Economic analysis ; Water loss / Pakistan / Indus River
(Location: IWMI-India Call no: P 1309 Record No: H0808)
Over half of the water delivered from the canal system to the watercourses managed by the farmers is not made available to the farmers' crops in Pakistan. Most of this water loss is due to loss of water through the banks of the watercourses. Lack of maintaining these banks and lack of cleaning the watercourse is a result of inadequate organization of the 10 to 150 farmers who use the watercourse, and a deficiency of knowledge concerning the amount of their water which is being lost. Various methods of watercourse improvement have been evaluated including concrete and masonry linings and simple earthen improvements of the ditches with concrete control structures, junctions, and turnouts. With the cost of labor low in Pakistan, the earthen improvements with concrete structures appear to be the best investment. Farm water management improvement programs have been implemented in most of the provinces which include this type of watercourse improvement, land leveling and advice to the farmers on how and when to irrigate his crops to optimize his production. The rate at which personnel can be trained to help the farmers implement these improved water management practices is limiting the rate of implementation.
20 Johnson, S. H. III. 1986. Economic, social and technical considerations determining investments in groundwater in Bangladesh. In International Water Resources Association, Water resources for rural areas and their communities: Proceedings of the 5th World Congress on Water Resources, 9-15 June 1985, Brussels, Belgium. Brussels, Belgium: IWRA. pp.893-902.
Investment policy ; Groundwater ; Deep tube wells ; Shallow tube wells ; Water conveyance ; Water loss ; Water user associations ; Economic analysis / Bangladesh
(Location: IWMI-India Call no: 631.7.8 G584 JOH Record No: H0812)
With a total land area the size of the state of Illinois and a population exceeding 90 million, Bangladesh has one of the highest man-land ratios in the world. Blessed with vast river systems but having such a flat topography that large-scale reservoir and gravity surface irrigation systems are not feasible, Bangladesh has been forced to turn to groundwater as a source for dry season irrigation water. Initial investments were in low-lift pumps but now the Government of Bangladesh (GOB) is encouraging investment in hand pumps, shallow tubewells and deep tubewells as sources for additional water for irrigation. However, to date utilization rates have been far below those predicted by national planners. The purpose of this paper is to analyze the economics of alternative groundwater extraction devices in Bangladesh and to use their results to explain present low utilization rates. Using recent data, the analysis examines economic, social and technical characteristics of the alternative technologies and explains why shallow tubewells are to be encouraged over deep tubewells. Based on these results, suggestions for improving utilization rates are presented.
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