Estimation of Current Water Use over the Complex Topography of the Nile Basin Headwaters: The Case of Ghba Subbasin, Ethiopia

<table class="table-group" id="tab9"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Irrigation cycles</td><td class="align_center">Area (ha)</td><td class="align_center">Irrigation water requirement (Mm<sup>3</sup>)</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">First-round irrigation</td><td class="align_center">10,254.80</td><td class="align_center">96.52</td></tr><tr><td class="align_left">Second-round irrigation</td><td class="align_center">7,715.91</td><td class="align_center">47.99</td></tr><tr><td class="align_left">Supplemental Irrigation</td><td class="align_center">2,420.29</td><td class="align_center">7.04</td></tr><tr><td class="align_left">Total</td><td class="align_center">20,391.00</td><td class="align_center">151.55</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Current estimated irrigation water demand of the subbasin.</div>

Advances in Civil Engineering

tab9

Table 9

Table 9: Estimation of Current Water Use over the Complex Topography of the Nile Basin Headwaters: The Case of Ghba Subbasin, Ethiopia 