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Author: Gerald T. O'Mara
Publisher:
ISBN:
Category : Irrigation
Languages : en
Pages : 10
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Book Description
Author: Gerald T. O'Mara
Publisher:
ISBN:
Category : Irrigation
Languages : en
Pages : 10
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Book Description
Author: Cheema, Muhammad Jehanzeb Masud
Publisher: Intl Food Policy Res Inst
ISBN:
Category : Social Science
Languages : en
Pages : 48
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Book Description
Water allocations for canal commands are not uniform throughout Pakistan. They vary from 2.5 to 15 cusec (ft3/sec) per 1,000 acres (i.e. 0.18 – 1.1 litre/sec/hectare) for different canal commands. This variability in water allowance (WA) has resulted in low water productivity (kg of yield per m3 of water use), an indicator used to assess efficient water use, especially in command areas having higher water allocations. In this study, satellite imagery was used to estimate crop water use and corresponding water productivity for each canal command area of the Indus Basin Irriga-tion System. Three years were selected for the study and two representative canal commands (Lower Chenab and Muzaffargarh Canal) were selected for detailed analysis and ground truthing. Spatially distributed maps of land use, crop water use, groundwater use and quality, soil and water salinity, and crop yields at a pixel resolution of 250 m (6.25 ha) were prepared and then verified by field surveys. GIS maps of canal water availability/supply were also prepared to account for the volume of water supplied through irrigation. This spatial database was used to evaluate and create maps of water productivity in the different canal commands.
Author: Mohammad Talib Chaudhry
Publisher:
ISBN:
Category : Water resources development
Languages : en
Pages : 44
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Book Description
Author: Winston Yu
Publisher: World Bank Publications
ISBN: 082139875X
Category : Business & Economics
Languages : en
Pages : 187
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Book Description
This study assesses the impacts of climate risks and development alternatives on water and agriculture in the Indus basin of Pakistan. It analyzes inter-relationships among the climate, water, and agriculture sectors and provides a systems modeling framework for these purposes.
Author: Roger Graham Barry
Publisher:
ISBN:
Category : Frozen ground
Languages : en
Pages : 404
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Book Description
Author: John H. Duloy
Publisher:
ISBN: 9780821304112
Category : Agriculture and state
Languages : en
Pages : 130
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Book Description
Author: Aly I. El-Kadi
Publisher: CRC Press
ISBN: 1351443895
Category : Technology & Engineering
Languages : en
Pages : 384
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Book Description
Written by renowned experts in the field, this book assesses the status of groundwater models and defines models and modeling needs in the 21st century. It reviews the state of the art in model development and application in regional groundwater management, unsaturated flow/multiphase flow and transport, island modeling, biological and virus transport, and fracture flow. Both deterministic and stochastic aspects of unsaturated flow and transport are covered. The book also introduces a unique assessment of models as analysis and management tools for groundwater resources. Topics covered include model vs. data uncertainty, accuracy of the dispersion/convection equation, protocols for model testing and validation, post-audit studies, and applying models to karst aquifers.
Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 972
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Book Description
Author: Gordon James Young
Publisher:
ISBN:
Category : Glaciology
Languages : en
Pages : 136
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Book Description
Author: Carolyn Joanne Logan
Publisher:
ISBN:
Category : Indus River Watershed
Languages : en
Pages : 500
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Book Description
