Mr. Muhammad Naseer Rais

15-MS-HID-01

Degree Program

MS - Hydraulics, Irrigation & Drainage

District - Province

Hyderabad, Sindh

Email Address

[email protected]

Estimation of Evapotranpiration and Potential Water Consumption By Different Crops at Canal Command Level: A Case Study of Indus Basin Irrigation System
  1. To determine Crop Evapotranspiration need of different crops at Canal Command Level, for estimation of Agricultural water Demand.
  2. Estimate the supply and demand gaps of the system.

Supervisor Name: Mr. Waqas Ahmed, Assistant Professor, USPCAS-W, MUET, Jamshoro

Co-Supervisor Name: Mr. Rakhshinda Bano, Assistant Professor, USPCAS-W, MUET, Jamshoro

The substance and sustenance of life is water, without which survival of being is impossible. It is not only required for drinking purpose, but also for growing food and fiber. The sustainability of this most unevenly distributed resource has been seriously threatened by rapid population growth. In such circumstances, its improper management and inequitable distribution is a grave problem and root cause of all conflicts. The Indus Basin Irrigation System (IBIS) Pakistan being the largest contiguous irrigation system is not an exception to twin problem of improper management and inequitable distribution. Therefore, this study has been undertaken under the context of climatic and political considerations for proper management and equitable distribution.

The agriculture sector is largest consumer of water in Pakistan accounted of its 97% share hence, evapotranspiration is a very important concept in this context. Therefore, evapotranspiration is estimated using a penmanmonteith method at canal command level by procuring metrological data from 11 metrological stations namely: Thatta, Nawabshah, Jacobabad, Khairpur, Bahawalpur, DG Khan, Multan, Sialkot, Lahore, Faisalabad and Jhelum. Ultimately crop water requirement isestimated. It was observed that areas of Sindh have comparatively high rate of evapotranspiration, particularly Guddu Left, Khairpur East and Khairpur WestCommand areas are most climatic disadvantageous areas due to high rates of evapotranspiration and crop water consumption.

While speaking about political context, the inequity in distribution of the supplies was addressed. For that, the water withdrawn by canals of Sindh and Punjab was estimated for 23 years from 1991 to2013. From the analysis, it was observed that every year Sindh has faced extreme deficiency cutoff from its allocated share. Punjab has also faced deficiency and cutoff from its allocated share in every Kharif season but in lower proportion.Whereas, Punjab has extracted excess of its share 11 times in 23 years in Rabi Season.