Impact of irrigation modernization and high Aswan Dam inflow on Nile water system efficiency and water reuse in Egypt

IF 5.9 1区农林科学 Q1 AGRONOMY

Agricultural Water Management Pub Date : 2025-05-29 DOI:10.1016/j.agwat.2025.109576

Gaber Abdellatif , Ibrahim Gaafar , Marnix Van Der Vat , Petra Hellegers , Hosam El-Din El-Naggar , Angel Di Miguel Garcia , Chris Seijger

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引用次数: 0

Abstract

Irrigation Modernization is promoted to save water in many countries, because of its proven achievement of higher efficiencies on the field level. However, the potential of irrigation modernization in achieving water savings on the basin level is contentious. Whether it also improves the Nile basin system efficiency is studied in this paper by simulating Egypt's Nile River water balance using the River Basin Simulation Model (RIBASIM-Delwaq) under regular, high, and low inflow conditions. In addition, the impacts of three irrigation modernization strategies (all canals lined, drip irrigation on all agricultural land, all canals lined and drip irrigation on all agricultural land) were investigated for the system efficiency, water reuse, and outflow to the Mediterranean. The results show that the Nile Basin system efficiency in Egypt is very high under the baseline conditions reaching up to 75.6 % due to formal and informal water reuse activities. This leaves little room for modern irrigation strategies to achieve higher system efficiencies; 75.6 %, 78.5 %, and 77.0 %, respectively. The paper concludes that modern irrigation will not increase system efficiency or the outflow to the Mediterranean significantly, however, it will reduce official and unofficial water reuse by allowing farmers to receive more water from canals instead of drains and shallow groundwater.

查看原文本刊更多论文

灌溉现代化和阿斯旺大坝高流入对埃及尼罗河水系效率和水回用的影响

许多国家提倡灌溉现代化以节约用水，因为它已证明在田间一级取得了更高的效率。然而，灌溉现代化在流域一级实现节水的潜力是有争议的。本文通过使用RIBASIM-Delwaq流域模拟模型（River basin Simulation Model, RIBASIM-Delwaq）在正常、高、低流入条件下模拟埃及尼罗河水量平衡，研究是否也能提高尼罗河流域系统效率。此外，研究了三种灌溉现代化策略（全沟渠衬砌、全农田滴灌、全沟渠衬砌和全农田滴灌）对系统效率、水再利用和向地中海流出的影响。结果表明，在基线条件下，埃及尼罗河流域系统的效率非常高，由于正式和非正式的水回用活动，效率可达75.6% %。这使得现代灌溉战略没有多少空间来实现更高的系统效率；分别为75.6 %、78.5 %和77.0 %。这篇论文的结论是，现代灌溉不会显著提高系统效率或向地中海流出的水量，然而，它会减少官方和非官方的水再利用，因为它允许农民从运河而不是从排水沟和浅层地下水中获得更多的水。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Agricultural Water Management 农林科学-农艺学

CiteScore

12.10

自引率

14.90%

发文量

648

审稿时长

4.9 months

期刊介绍： Agricultural Water Management publishes papers of international significance relating to the science, economics, and policy of agricultural water management. In all cases, manuscripts must address implications and provide insight regarding agricultural water management.