What was used for the development of agriculture in Egypt?

For the development of agriculture in Egypt, a system of irrigation canals and a system of drainage of swamps were used. In the first case, numerous channels were built, which diverged through the fields, in order to maintain moisture there. In another case, the swamps were drained in order to make the given plot of land suitable for cultivation. Agriculture was very important for the Egyptians at that time. Since there was no rain, the main source of water was the Nile.