Irrigation works

1. =Headworks.=--In the design of head works no very precise rules can be laid down. Some general ideas can however be given as to the chief points to be attended to and some ge...

under-sluices properly closed so that a pond was formed in which the river silt deposited. When necessary the canal is closed, the sluices opened, and the silt scoured away. For...

1. =Preliminary Remarks.=--The chief improvements which have been under consideration during recent years are three in number. The first is increased economy of water in its act...

III. with the working of canals but as the two subjects are to some extent interdependent, they will both be dealt with in a preliminary manner in the remaining articles of the...

1. =General Description.= Fig. 26 shows part of the Punjab. The areas marked L.J., L.C., U.B.D., and S.C. are already irrigated by the Lower Jhelum, Lower Chenab, Upper Bari Doa...

1. =Preliminary Remarks.= A large canal is under a Superintending Engineer and it often constitutes his sole charge. It consists generally of three to five “divisions,” each und...

1. =Preliminary Remarks.=--The largest irrigation canals are fed from perennial rivers. When the canal flows throughout the year it is called a “Perennial Canal.” Chief among th...

A. Divide Wall on Lower Chenab Canal 169 B. Specification for Maintenance of Channels 171 C. Specification for Maintenance of Masonry Works 174 D. Watching and Protecting Banks...

1. Headworks 30 2. The Contour Map 36 3. Alignments and Discharges 37 4. Remarks on Distributaries 45 5. Design of Canal and Branches 47 6. Banks and Roads 53 7. Trial Lines 58...

1. Preliminary Remarks 96 2. Gauges and Regulators 103 3. Gauge Readings and Discharges 106 4. Registers of Irrigation and Outlets 113 5. Distribution of Supply 118 6. Extension...

1. Preliminary Remarks 1 2. General Principles of Canal Design 2 3. Information concerning Canals 11 4. Losses of Water 16 5. Duty of Water 21 6. Sketch of a Project 26