Your search found 26 records
1 Walker, W. R.; Skogerboe, G. V.; Early, A. C.; Merrey, D. J.; Robson, R. E.; Sampath, R. K. 1983. Proposed activities for developing an integrated strategy for improving irrigated agriculture in northeast Thailand. Bangkok, Thailand: U. S. Agency for International Development (USAID); Bangkok, Thailand: Royal Irrigation Department. 28p.
Irrigated farming ; Farmer participation ; Rehabilitation ; Training ; Water user associations / Thailand
(Location: IWMI HQ Call no: 631.7.8 G750 WAL Record No: H000446)
https://vlibrary.iwmi.org/pdf/H000446.pdf
(1.73 MB)

2 Walker, W. R.; Joshi, D.; Oad, R.; Sparling, E.; Coward, E. W. Jr; Drosdoff, M.; Keller, J.; Vermillion, D. 1984. Small scale irrigation development. Logan, Utah: Utah State University. xxiv, 130p. (Water management synthesis report no.32)
Small scale systems ; Development ; Water management ; Organizations ; Governmental interrelations ; Groundwater ; Tank irrigation / Indonesia
(Location: IWMI-HQ Call no: 631.7.6.2 G662 WAL Record No: H0512)

3 Walker, W. R.. 1986. Developing integrated strategies for improving irrigation system design, management and rehabilitation: An overview of the "Main systems" Project. Logan, UT, USA: Department of Agricultural and Irrigation Engineering. Utah State University. 29p.
Irrigation systems ; Rehabilitation ; Watersheds ; Irrigation design
(Location: IWMI-HQ Call no: 631.7.8 G000 WAL Record No: H01259)

4 Merkley, G. P.; Pojsoontorn, C.; Kawsard, K.; Walker, W. R.; Skogerboe, G. V. 1988. USU irrigation main system hydraulic model: Replication of modeling capability in other countries. Logan, UT, USA: Utah State University. ix, 76p. (WMS report no.84)
Simulation models ; Hydraulics ; Mathematical models ; Irrigation programs ; Irrigation canals ; Computer techniques ; Flow regulators ; Water control ; Small scale systems / Thailand
(Location: IWMI-HQ Call no: 631.7.1 G000 MER Record No: H03422)
This report concerns the requirements for replicating the capability for hydraulic modeling of irrigation main systems with the USU Main System Hydraulic Model at different project sites and different countries. The computerized model was developed at Utah State University (USU) under the Water Management Synthesis II Project, funded and assisted by USAID through the Consortium for International Development. The information contained herein complements that which is found in the user's manual for the model

5 Gichuki, F. N.; Walker, W. R.; Merkley, G. P. 1990. Transient hydraulics model for simulating canal-network operation. Journal of Irrigation and Drainage Engineering, 116(1):67-82.
Simulation ; Hydrology ; Irrigation canals ; Irrigation operation
(Location: IWMI-HQ Call no: PER Record No: H06006)

6 Merkley, G. P.; Walker, W. R.; Skogerboe, G. V. 1990. Field installation of a model for transient simulation of canal flow. Irrigation and Drainage Systems, 4(1):77-91.
Irrigation canals ; Flow ; Simulation / Thailand
(Location: IWMI-HQ Call no: PER Record No: H006137)
https://vlibrary.iwmi.org/pdf/H006137.pdf
(0.90 MB)

7 Walker, W. R.; Skogerboe, G. V. 1987. Surface Irrigation: Theory and practice. Englewood Cliffs, NJ, USA: Prentice-Hall Inc. xiii, 386p.
Surface irrigation ; Irrigation practices ; Irrigation requirements ; Performance evaluation ; Irrigation engineering ; Models
(Location: IWMI-HQ Call no: 631.7.1 G000 WAL Record No: H06187)

8 Walker, W. R.. 1990. 1990 Real-time estimation of furrow infiltration. Journal of Irrigation and Drainage Engineering, 116(3):299-318.
Furrow irrigation ; Infiltration ; Estimation
(Location: IWMI-HQ Call no: PER Record No: H06344)

9 Walker, W. R.. 1989. Guidelines for designing and evaluating surface irrigation systems. Rome, Italy: FAO. ix, 137p. (FAO irrigation and drainage paper 45)
Surface irrigation ; Irrigation design ; Evaluation ; Irrigation systems ; Levelling
(Location: IWMI-HQ Call no: 631.7.1 G000 WAL Record No: H06472)
http://www.fao.org/docrep/T0231E/T0231E00.htm

10 Oweis, T. Y.; Walker, W. R.. 1990. Zero-inertia model for surge flow furrow irrigation. Irrigation Science, 11(3):131-136.
Furrow irrigation ; Mathematical models
(Location: IWMI-HQ Call no: PER Record No: H06505)

11 Merkley, G. P.; Walker, W. R.; Cichuki, F. N. 1990. Transient hydraulic modeling for improved canal system operation. Agricultural Water Management, 18(3):181-194.
Canals ; Hydraulic structures ; Models
(Location: IWMI-HQ Call no: PER Record No: H06990)

12 Oron, G.; Walker, W. R.. 1981. Optimal design and operation of permanent irrigation systems. Water Resources Research, 17(1):11-17.
Irrigation systems ; Irrigation design ; Optimization methods
(Location: IWMI-HQ Call no: P 1489 Record No: H07266)

13 Merkley, G. P.; Walker, W. R.. 1991. Centralized scheduling logic for canal operation. Journal of Irrigation and Drainage Engineering, 117(3):377-393.
Irrigation canals ; Irrigation scheduling ; Water distribution ; Gates
(Location: IWMI-HQ Call no: PER Record No: H08271)

14 Samani, Z. A.; Walker, W. R.; Jeppson, R. W.; Willardson, L. S. 1985. Numerical solution for unsteady two-dimensional infiltration in irrigation furrows. Transactions of the ASAE, 28(4):1186-1190.
Infiltration ; Furrow irrigation ; Mathematical models ; Simulation
(Location: IWMI-HQ Call no: P 2402 Record No: H011284)

15 Samani, Z. A.; Walker, W. R.; Willardson, L. S. 1985. Infiltration under surge flow irrigation. Transactions of the ASAE, 28(5):1539-1542.
Infiltration ; Gravity flow ; Computer techniques ; Simulation
(Location: IWMI-HQ Call no: P 2402 Record No: H011285)

16 Jayasekera, A. A.; Walker, W. R.. 1992. Remotely sensed data and geographic information systems: For management and appraisal of large scale irrigation projects in the developing countries. 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, Leuven, Belgium: Center for Irrigation Engineering. pp.453-461.
GIS ; Irrigation management ; Large-scale systems ; Land use ; Remote sensing ; Irrigation programs ; Rice ; Productivity ; Water availability ; Cropping systems ; Developing countries / Sri Lanka / Gal Oya Project
(Location: IWMI-HQ Call no: 631.7.1 G000 FEY Record No: H014426)

17 Play n, E.; Walker, W. R.; Merkley, G. P. 1994. Two-dimensional simulation of basin irrigation. I: Theory. Journal of Irrigation and Drainage Engineering, 120(5):837-856.
Basin irrigation ; Mathematical models ; Simulation ; Infiltration ; Flow
(Location: IWMI-HQ Call no: PER Record No: H015368)

18 Play n, E.; Walker, W. R.; Merkley, G. P. 1994. Two-dimensional simulation of basin irrigation. II: Applications. Journal of Irrigation and Drainage Engineering, 120(5):857-870.
Basin irrigation ; Simulation models ; Performance ; Infiltration ; Flow
(Location: IWMI-HQ Call no: PER Record No: H015369)

19 Yamashita, S.; Walker, W. R.. 1994. Command area water demands I: Validation and calibration of UCA model. Journal of Irrigation and Drainage Engineering, 120(6):1025-1042.
Water demand ; Calibrations ; Irrigation canals ; Soil moisture ; Simulation models ; Computer models
(Location: IWMI-HQ Call no: PER Record No: H015680)

20 Yamashita, S.; Walker, W. R.. 1994. Command area water demands II: Water-demand function. Journal of Irrigation and Drainage Engineering, 120(6):1043-1055.
Water demand ; Calibrations ; Irrigation canals ; Soil moisture ; Simulation models ; Computer models ; Statistical analysis
(Location: IWMI-HQ Call no: PER Record No: H015681)

Powered by DB/Text WebPublisher, from Inmagic WebPublisher PRO