environmental impact assessment of irrigation and drainage projects pdf Tuesday, April 27, 2021 3:49:06 PM

Environmental Impact Assessment Of Irrigation And Drainage Projects Pdf

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International Journal of Human Capital in Urban Management

The environmental impacts of irrigation relate to the changes in quantity and quality of soil and water as a result of irrigation and the effects on natural and social conditions in river basins and downstream of an irrigation scheme. Dougherty, T. Environmental impact assessment of irrigation and drainage projects. The profitability of irrigation and drainage in humid areas depends on seasonal rainfall, adequate economic returns from crops, and irrigation and drainage expenses. To boost profit-. The environmental impact of agriculture involves a variety of factors from the soil, to water, the air, animal and soil variety, people, plants, and the food itself.

No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying or otherwise, without the prior permission of the copyright owner. Applications for such permission, with a statement of the purpose and extent of the reproduction, should be addressed to the Director, Publications Division, Food and Agriculture Organization of the United Nations, Viale delle Terme di Caracalla, Rome, Italy. FAO PrefaceThe importance of environmental protection and conservation measures has been increasingly recognized during the past two decades. It is now generally accepted that economic development strategies must be compatible with environmental goals. This requires the incorporation of environmental dimensions into the process of development.

The environmental impacts of irrigation relate to the changes in quantity and quality of soil and water as a result of irrigation and the effects on natural and social conditions in river basins and downstream of an irrigation scheme. The impacts stem from the altered hydrological conditions caused by the installation and operation of the irrigation scheme. Among some of these problems is the depletion of underground aquifers through overdrafting. Soil can be over-irrigated because of poor distribution uniformity or management wastes water, chemicals, and may lead to water pollution. Over-irrigation can cause deep drainage from rising water tables that can lead to problems of irrigation salinity requiring watertable control by some form of subsurface land drainage. However, if the soil is under irrigated, it gives poor soil salinity control which leads to increased soil salinity with consequent buildup of toxic salts on soil surface in areas with high evaporation. This requires either leaching to remove these salts and a method of drainage to carry the salts away.

Environmental impact assessment of irrigation and drainage projects

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Environmental impacts assessment may be some measures to offset the impact to an acceptable level or explore new solutions. The research was conducted with the aim of assessing the socio-economic, cultural, physical and ecological impacts of Kavar irrigation and drainage network in Fars Province Iran. The ICOLD matrix is one of the flexible methods that converted qualitative data into quantitative data. In this method, the effect of the project activities on the environmental components were assessed in two stages; project construction and operation based on physical, ecological, socio-economic and cultural aspects. The findings indicated that positive effects will be generally exerted on the region environment by establishing and operating irrigation and drainage network in Kavar plain. In other words, substantial positive impacts will be seen in the region consequently; such as improving the average level of aquifer, enhancement of agricultural wells, and agriculture development in the region.


FAO has, for quite some time now, been emphasizing the environmental impacts of irrigation and drainage projects, and provided technical assistance to a number.


Environmental Impacts of Small Scale irrigation schemes

Dougherty and A. It is now generally accepted that economic development strategies must be compatible with environmental goals. This requires the incorporation of environmental dimensions into the process of development. It is important to make choices and decisions that will eventually promote sound development by understanding the environment functions.

Environmental impact assessment of irrigation and drainage projects

Human Health and Irrigation Development in Kenya

Irrigation and drainage projects invariably result in many far-reaching environmental and socio-economic changes. Some of these benefit human population, while others threaten the long- term productivity of the irrigation and drainage projects themselves as well as the natural resource base. Negative changes are not limited to increasing pollution or loss of habitat for native plants and animals; they cover the entire range of environmental components, such as soil, water, air, energy, and the socio-economic system. Irrigation makes possible the expansion and intensification of agriculture. Yet, without appropriate management, irrigation development can have significant negative environmental impacts. At basin level, irrigation schemes can negatively affect the hydrology. Large irrigation projects which store or divert river water have the potential to cause major environmental disturbances, resulting from changes in the hydrology and limnology of river basins.

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No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying or otherwise, without the prior permission of the copyright owner. Applications for such permission, with a statement of the purpose and extent of the reproduction, should be addressed to the Director, Publications Division, Food and Agriculture Organization of the United Nations, Viale delle Terme di Caracalla, Rome, Italy. FAO PrefaceThe importance of environmental protection and conservation measures has been increasingly recognized during the past two decades. It is now generally accepted that economic development strategies must be compatible with environmental goals. This requires the incorporation of environmental dimensions into the process of development. It is important to make choices and decisions that will eventually promote sound development by understanding the environment functions.


PDF | Now we are entering a new phase in which human food needs must harmonize with environmental and Environmental Impact Assessment of Subsurface Drainage Projects in Egypt irrigation water and prevent water-​logging to.


The human health threats posed by irrigation development have made it necessary to understand the consequences of local environmental changes on the economic and social well-being of people. Local environmental changes and the human health risks associated with them are commonly attributed to the improper understanding of the complex processes involved in the construction of irrigation systems. In this respect, while it is necessary to recognize that the environmental and health problems associated with irrigated agriculture constitute an unnecessary evil, such schemes have often been constructed not without good intentions. Such intentions include the interest of societal welfare at large, bearing in mind that the negative consequences could either be avoided or minimised by introducing appropriate corrective measures.

Environmental impact assessment of irrigation and drainage projects

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