IBDP Geography Section A Chapter 1 Notes

water scarcity and water quality


These notes have specially been curated by expert teachers to simplify and enlighten concepts given in IB Geography. The notes are comprehensive in nature and are sufficient to study the chapter in depth, One need not look for other resources beyond the notes provided on our website which can be accessed for free. The notes for Geography IBDP are available on our official website and can be downloaded for free. You are one click away from obtaining all that you need to score well in IB Geography. The material made available on Tychr’s website is available for all IBDP subjects and is specially curated after an extensive amount of effort to ensure that the notes are in consonance with the IB curriculum and are an amalgamation from various textbooks prescribed by the IBO.

Students often face a challenge understanding concepts, especially concepts that are new and These IB Geography Notes will help the student cover the chapter of Drainage Basin Hydrology and Geomorphology entirely while explaining each and every concept in a detailed and easy way.

Water is available in plenty, however, the problem of water scarcity persists all around us. This chapter will explore key concepts related to water scarcity and water quality. The chapter begins by differentiating between physical and economic water scarcity. Drought is the lack of precipitation for a long period of time that has the potential to adversely impact many lives. Thus, ensuring the supply of water and maintaining the quality of water is essential. One important environmental consequence of agricultural activities on water quality is eutrophication or the enrichment of water by nutrient salts that causes structural changes to the ecosystem.

The chapter discusses the cause of eutrophication- Fertilizers, concentrated animal feeding operations, direct sewage and industrial waste discharge into water bodies, agriculture and natural events. Composting, reducing pollution, ultrasonic irradiation and strengthening policies around non-point pollution are few ways to deal with eutrophication. Irrigation, a crucial process in agriculture, has direct and indirect effects on the environment. The concept of salinization is discussed with brief explanations of why it is a problem and where it occurs. The chapter ends with two comprehensive case studies of the Grand Ethiopian Renaissance Dam and Water Diversion in China.