There are, however, a few isolated local high spots and ridges. Without the existence of an efficient water drainage systems, each of the factors mentioned above can lead to the creation of stagnant water pools, which, in turn, encourage the breeding and survival of mosquitos. Hydrogeomorphology Two categories of geomorphology may be found in Nadiad. Flood plains are found near the shores of the Shedi river and its tributaries. This land feature has developed relatively recently, and its moisture content is very high.
Alluvial plains exist throughout the rest of the Nadiad region.
The moisture content of the Alluvial plains is relatively lower than that found in the flood plains. The Mahi river is one of the major river systems in western India. In 1978, a reservoir was constructed on this river for irrigation. The command area of this irrigation system includes the southern half of Nadiad taluka. The abundance of water in irrigated areas is due to seepage, silting, and stagnation, creating innumerable breeding sites for mosquitoes.