Kitap 17
1.37
The lake Moeris, by its magnitude and depth, is able to sustain the superabundance of water which flows into it at the time of the rise of the river, without overflowing the inhabited and cultivated parts of the country. On the decrease of the water of the river, it distributes the excess by the same canal at each of the mouths; and both the lake and the canal preserve a remainder, which is used for irrigation. These are the natural and independent properties of the lake, but in addition, on both mouths of the canal are placed locks, by which the engineers store up and distribute the water which enters or issues from the canal.