Report on Minor Irrigation Works (Andhra Pradesh)

Abstract

The normal average precipitation is 37 inches and is mostly received by South-West and North-East Monsoons. The South-West Monsoon starts from the West Coast in June, registering local heavy falls in many parts of the State, and remains active till end of September accounting for 25 inches of rainfall during this period. Following the South-West Monsoon is the North-East Monsoon which starts from October and may extend till December. The showers, received are, however, light and uncertain and register about 8 inches of rainfall during this period. Both winter and summer periods account for hardly 4 inches of rainfall. The coastal Andhra which comprises the districts of (1) Srikakulam, (2) Visakhapatnam, (3) East Godavari, (4) West Godavari, (5) Krishna, (6) Guntur, (7) Nellore as also portions of Chittoor and Cuddapah receive about one third of their rainfall from the North-East Monsoon, in addition to North-West Monsoons. Whereas in the non-coastal portion of Andhra Pradesh the North-East Monsoon contributes only about 6 to 15 per cent of total. By and large, the annual rainfall is uneven and at times inadequate even in districts of assured rainfall such as coastal districts in Andhra Region, and Adilabad and Nizamabad Districts in Telangana Region, as may be seen in Appendix II-A.