Your search found 446 records
1 Khaliquzzaman; Chander, S. 1997. Network flow programming model for multireservoir sizing. Journal of Water Resources Planning and Management, 123(1):15-22.
(Location: IWMI-HQ Call no: PER Record No: H019689)
2 Waite, P. J. 1981. Rio Guayas, Ecuador: Salt water intrusion study 3 - Analysis of low flows. Wallingford, UK: Hydraulics Research Station. 53p. (Hydraulics Research Station report no.OD/35)
(Location: IWMI-HQ Call no: 551.4609 G520 WAI Record No: H0282)
3 Amphlett, M. B. 1983. Analysis of historic stage data for the Berbice River, Guyana. Wallingford, UK: Hydraulics Research Station. 30p. (Hydraulics Research Station report no.OD/56)
(Location: IWMI-HQ Call no: 551.483 G526 AMP Record No: H0278)
4 McWhorter, D. B. 1980. Summary of skimming well investigations. Fort Collins, CO, USA: Colorado State University. xi, 77 p. (Water management technical report no. 63)
(Location: IWMI-HQ Call no: 631.7.1 G730 MCW Record No: H0328)
This report summarizes the theoretical, laboratory, and field research conducted as part of the Water Management Research Project at Colorado State University. The research was specifically oriented toward Pakistan problems but much of the material is more generally applicable. Salt water upconing in isotropic and anisotropic aquifers beneath wells was examined using both laboratory and numerical models, and guidelines for the construction and operation of wells to minimize contamination by upconing are provided. A method for determining the maximum safe depth of drains below the water table is also provided.
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 Kelly, W. W. Water control in Tokugawa, Japan: Irrigation in a Japanese river basin. Unpublished manuscript. New Haven, CT, USA: Department of Anthropology Yale University. viii, 212 p.
(Location: IWMI-HQ Call no: 631.7 G696 KEL Record No: H0547)
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 Venkataraman, K. N.; Nelson, K. N.; Uttamchandani, J. C.; Reddy, J. M.; Laitos, W. R.; Sheng, T. S.; Stanbury, P. C.; Madsen, A. G.; Honeycutt, C. W. 1984. Interdisciplinary diagnostic analysis of and workplan for Dahod Tank Irrigation project, Madhya Pradesh, India. Fort Collins, CO, USA: Colorado State University. viii, 73 p. (Water management synthesis report no. 25)
Flow ; Small scale systems ; Equity ; Water distribution ; Irrigated farming ; Cropping systems ; Women ; Irrigation engineering / India / Madhya Pradesh
(Location: IWMI-HQ Call no: 631.7 G635 VEN Record No: H0510)
9 Fadl, O. A.; Bailey, C. R. (Ed.) 1984. Water distribution in Sudanese irrigated agriculture: Productivity and equity - Conference papers. Wad Medani, Sudan: University of Gezira. 151 p.
Irrigated farming ; Agriculture ; Water distribution ; Equity ; Water management ; Schistosomiasis ; Flow ; Farm income ; Cotton ; Crop production ; Rehabilitation / Sudan
(Location: IWMI-HQ Call no: 631.7.8 G146 FAD Record No: H0457)
10 ICID. 1972. ICID technical memoirs no. 1, 1972. New Delhi, India: ICID. 320p.
Evapotranspiration ; Flow ; Drainage ; Watercourses ; Rain ; Irrigated farming ; Mathematical models ; Canals
(Location: IWMI-HQ Call no: 631.7 G000 ICI Record No: H0660)
11 Bos, M. G. 1985. Long throated flumes and broad-crested weirs. Dordrecht, The Netherlands: Martinus Nijhoff/Dr W. Junk Publishers. xiii, 141 p.
(Location: IWMI-HQ Call no: 631.7.1 G000 BOS Record No: H0668)
12 Pontin, J. M. A. 1978. Principles of canal seepage measurement by Bell-type bed penetration systems. Wallingford, UK: Hydraulics Research Station. 14p. (Hydraulics Research Station report no.OD/13)
(Location: IWMI-HQ Call no: 631.7.1 G000 PON Record No: H0686)
The principles and theory used in the design and operation of bell- type systems for the measurement of local canal bed seepage are explained and developed. The steady and non-steady state modes are treated separately with particular care to discuss the basic assumptions involved for each condition. The derivation of governing equations follows a parallel course to that originally introduced by Bouwer and is self-contained. Some comparison of the 2 points of view is presented accompanied by a discussion of weak points desiring research attention.
13 Bennett, G. D.; Ata-Ur-Rehman; Sheik, A,; Ali, S. 1967. Analysis of aquifer test in the Punjab region of West Pakistan. Washington, DC, USA: US. Government Printing Office. iv, 56p. (Geological Survey Water-Supply paper 1608-G)
(Location: IWMI-HQ Call no: 631.7.6.3 G730 BEN Record No: H0625)
14 Bennett, G. D.; Mundorf, M. J.; Hussain, A. 1968. Electric-analog studies of brine coning beneath fresh-water wells in the Punjab region, West Pakistan. Washington, DC, USA: US. Government Printing Office. iv, 31p. (Geological Survey Water-Supply paper 1608-J)
(Location: IWMI-HQ Call no: 631.7.6.3 G730 BEN Record No: H0620)
15 Mundorf, M. J. 1972. Electric analog studies of flow to wells in the Punjab aquifer of West Pakistan: Contributions to the hydrology of Asia and Oceania. Washington, DC, USA: US. Government Printing Office. iv, 28p. (Geological Survey Water-Supply paper 1608-N)
(Location: IWMI-HQ Call no: 631.7.6.3 G730 MUN Record No: H0621)
16 Pearce, G. R. 1982. Zawia Reclamation Project III - Results of initial stages. Wallingford, UK: Hydraulics Research Station. 61p. (Hydraulics Research Station report no.OD/48)
(Location: IWMI-HQ Call no: 551.4609 G232 PEA Record No: H0368)
This interim report describes the difficulties that have arisen in reclaiming salt affected soil at Zawia in the northern periphery of the Nile Delta. Mainly these are natural ones: - a high water table, very saline groundwater, high evaporation rates, all of which combine to create the salinity problem; the consequent low permeability of the clay soil that makes it difficult to get leaching water to infiltrate; and the low-lying, flat nature of the land that makes it difficult to drain. Furthermore there are man made problems such as the difficulty in providing water in a controlled schedule, and the absence of chemical amendment. Described too are the results of Stages 1 and 2 of this project in which the local reclamation practice and then modifications to it were investigated. The broad conclusion of this is that these leaching operations were not successful because the field drainage was inadequate and hindered the flow through the soil profile of from the rather deficient supply in the canal network.
17 Indonesia. Irrigation and Water Supply Department. n.d. Effect of flow control systems on the cost-effectiveness of canal irrigation schemes. 20p.
(Location: IWMI-HQ Call no: P 1078 Record No: H0929)
Based on a pilot project for 6100 ha in Indonesia, this report provides details of the gain represented by an automatic Alsthom Neyrtec flow control system for irrigation networks.
18 Sanmuganathan, K.; Waite, P. J. 1975. Analysis of the discharge measurements carried out at Bansang, the Gambia, during March 1974. Wallingford, UK: Hydraulics Research Station. 172p. (Hydraulics Research Station report no.OD/3)
(Location: IWMI-HQ Call no: 551.4609 G198 SAN Record No: H01082)
19 Zolezzi, O. 1984. An evaluation of changes in main system management on farmer management activities, Gal Oya left bank, Yala season, 1984. 6p.
(Location: IWMI-HQ Call no: P 597 Record No: H01359)
20 Varisco, D. M. 1983. Sayl and Ghayl: The ecology of the water allocation in Yemen. Human Ecology, 11(4):365-383.
(Location: IWMI-HQ Call no: P 1258 Record No: H01520)
A comparison is made between the two major types of water allocation systems in Yemen: Seasonal flood (sayl) and highland spring flow (ghayl). Constraints in the nature of water as a flowing resource are defined for each system. The major distinctions between the two types of systems are variability in water flow (which influences the determination of access rights), techniques of water control, measurement of water turns, the need for supervision of irrigation activities, and the potential for economic expansion of the production system. It is argued that tribal political organization is an adaptive response to highland spring flow allocation in Yemen, but undergoes stress in coastal flood systems where competition for the same water source extends across tribal boundaries in upstream-down- stream conflict.
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