What is the criteria for the location of the head works in the irrigation system?

For deciding the location of headwork an irrigation system, you should have to follow points during the selection of location.

1. Elevation of water should be in such a manner that the water will flow under the gravity force.
2. All the construction materials should be available in the surrounding area.
3. Diversion head should be near the irrigation for irrigating area as possible and for keeping minimum canal length.