Articles and manuals on irrigation, drainage and land rehabilitation

Theoretical drainage and
    salinity?
Below one can find references to lecture notes, scientific articles, software manuals, and project reports that are shown in PDF format.
They are free for all kinds of use.


Ten articles (nr. 1, 3, 6, 7, 8, 9, 11, 12, 14, 15) were officially published before, the other texts are new.


More articles can be found on the "reports & cases" pages.


For viewing and downloading click on any of the 15 blue titles below you wish to select.

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The articles are arranged y subject: (A) Drainage,   (B) Salinity modelling,   (C) Irrigation,   and (D) Statistics.
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(A) Drainage subjects

1. Agricultural drainage criteria
                    This is a book chapter dealing with drainage systems, effects on agriculture, design criteria, water balances (budgets), drainage requirements, and examples in various agro-climatic zones.              
The table of contents may be viewed here.

2. Data analysis in drainage research
              This is a lecture note with examples of application of four software packages on this web site (CumFreq, SegReg, EnDrain and RainOff) and other analysis topics.
View table of contents here.

3. Energy balance of groundwater flow
              This is copy of an article published earlier. It gives physical theory of groundwater hydraulics.
View abstract.

4. Application of the energy balance of groundwater flow to drains and ditches
          This is an article giving the mathematical theory and examples of groundwater movement and seepage used in the EnDrain program (see Software on this website).
(view abstract)

Wheatbelt figure
Waterlogging and salinity due to irrigation in the wheatbelt
of W. Australia
5. Well spacing equations for subsurface drainage of agricultural land by pumped wells
                    This paper can be used as a manual of the WellDrain program (see the software page).
For information on well pumping tests for aquifer properties visit the same page.
 

6. Determining hydraulic conductivity of soils
                    This is a book chapter dealing with the determination of the saturated hydraulic conductivity or permeability of soils using small and large scale methods
The table of contents may be viewed here.


7. Agricultural land drainage a wider application through caution and restraint
              From: Annual Report 1991, p. 9 - 21. ILRI, Wageningen, The Netherlands
This article emphasizes environmentally wise use.

(B) Salinity modelling

8. SaltMod manual
                    This manual gives a description of the Saltmod model (see software page) for the leaching (flushing) of saline (salt affected) soils, including its principles, user menu, and case studies.
See table of contents

9. SaltMod application
      This is a proceedings paper called: "SaltMod, a tool for the interweaving of irrigation and drainage for soil salinity control".

10. SahysMod manual
                    This manual gives a description of the SahysMod model (see software page) including its principles, user menu, and case studies
SahysMod is a combination of Saltmod and a mathematical (numerical) groundwater model simulating flow and salinity in confined, unconfined and semiconfined (leaky) aquifers.
See table of contents



(C) Irrigation subjects
Baluch nomads
Water is scarce for Baluch nomads due to irrigation developments

11. Effectiveness and social/environmental impacts of irrigation projects
                    From: Annual Report 1988, p. 18-34. ILRI, Wageningen, The Netherlands.
12. Water harvesting and agricultural land development options in the NWFR
                    This article discusses the spate irrigation problems and potential in Pakistan.
13. Impacts of the irrigation improvement projects, Egypt
                    This report was prepared for the Egyptian- Dutch Advisory Panel on Land Drainage and Drainage Related Water Management and discusses water and salt balances.

(D) Statistical subjects

14. Frequency analysis in hydrology
                    This is a book chapter dealing with the cumulative frequency analysis of hydrologic phenomena including log-normal (lognormal) and Gumbel distributions giving confidence belts and discussing return periods (recurrence intervals).            
The table of contents may be viewed here.
An article on the use of the binomial distribution for the determination of confidence intervals and belts for cumulative probability distributions can be downloaded from this place, while a summary of it can be found over here


15. Regression analysis for water table, soil salinity plant growth and crop production
              This is a book chapter dealing with the principles of linear regression analysis (least squares method) including confidence statements and segmented regression using a breakpoint.
The table of contents may be viewed here.



For viewing and downloading click on any of the 15 blue titles above you wish to select.

More articles can be found on the reports & cases page.
 
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