Book Title: Groundwater in Our Water Cycle

Subtitle: Getting to Know Earth's Most Important Fresh Water Source

Authors: Eileen Poeter, Ying Fan, John Cherry, Warren Wood, and Douglas Mackay

Cover image for Groundwater in Our Water Cycle

Book Description: Although groundwater makes up 99% of Earth's liquid fresh water, it is hidden from view beneath the land surface. This book explains how this vast groundwater reservoir regulates Earth's fresh water hydrologic cycle by mediating the flow of continental surface waters. Groundwater also acts as a chemical factory and conveyor belt for processing and transporting Earth material, as well as a waste repository/processing plant. Groundwater is truly a global life support system, and its sustainable management is at the heart of meeting the challenge arising from population growth and climate change.

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Book Information

Book Description

Groundwater makes up 99% of Earth’s liquid fresh water and is vital for the sustenance of rivers, lakes, wetlands, and ecological systems. However, few people see groundwater because it is hidden beneath the land surface. To overcome this “hiddenness,” this book invites the reader to think about Earth’s fresh water in a new way, to envision that all the surface water we see in rivers, lakes and wetlands is just the tip of the Earth’s vast fresh water reservoir; that is, just the “tip of the iceberg” with the hidden portion of the “iceberg” being liquid groundwater rather than ice.

Groundwater shapes the Earth through weathering and geomorphologic processes. Rivers, lakes and wetlands are surface manifestations of groundwater, exchanging flow with the groundwater reservoir that feeds them when they need water and takes some of their flow when surface water is present in excess. This book draws attention to the ways in which the surface water that we can see is connected to and supported by the hidden groundwater reservoir that is continually flowing and replenishing the hydrologic cycle.

This continual flow of groundwater is a large, slow moving reservoir of fresh water (in its shallower realms), that reacts chemically with geologic materials along its flow paths, and interfaces with the water transport systems of rivers and the atmosphere. This book explains how the vast groundwater reservoir serves as: 1) a regulator of the fresh water hydrologic cycle by mediating the flow of continental surface waters; 2) a chemical factory and conveyor belt for processing Earth’s material and transporting it from the continents to the oceans; 3) a waste repository/processing plant; and, 4) a global life support system.

The Earth’s population of nearly 8 billion in 2020 is expected to reach 11 billion by 2100. Humans will have to learn to produce sufficient food without destroying the soil, water and climate. This has been called the greatest challenge humanity has faced. Sustainable management of groundwater is at the heart of the solution. The authors hope to contribute to better scientific understanding and improved management of groundwater. Groundwater can alleviate the problem if we seek its responsible use and replenishment through better governance.

Download the pdf version of this book.

Authors

Eileen Poeter, Ying Fan, John Cherry, Warren Wood, and Douglas Mackay

License

Groundwater in Our Water Cycle Copyright © 2020 by The Authors. All Rights Reserved.

Metadata

Title
Groundwater in Our Water Cycle
Authors
Eileen Poeter, Ying Fan, John Cherry, Warren Wood, and Douglas Mackay
License

All rights reserved. This publication is protected by copyright. No part of this book may be reproduced in any form or by any means without permission in writing from the authors (to request permission contact: permissions@gw-project.org). Commercial distribution and reproduction are strictly prohibited.

Publisher
The Groundwater Project
Publication Date
August 21, 2020