CHAPTER ONE
INTRODUCTION
Since the beginning of concern over the possible consequences of global warming, it has been widely recognized that changes in the cycling of waters between land, sea and air could have very significant impacts across many sectors of the economy, society and the environment. The characteristics of many terrestrial ecosystems, for example are heavily influenced by water availability, in the case of aquatic ecosystems, the quantity and quality of water in rivers and aquifers is fundamental to human, aquatic life and many activities. Most obviously agriculture use, industry use, power generation, transportation and waste constraint on economic development. Consequently, there have been a great many studies into the potential effect of climatic change on hydrology (focusing of cycling of water and water quality aspects with its proper analysis and assessment).
The majority of these studies have concentrated on possible changes in the water balance for example, the quality of stream water, impacts of the changes in the gravity of water such as the reliability of a water sources (supply) or the risk of contaminated source. This study focuses on techniques adopted to determine the quality of water, by carrying out chemical text, biological text and physical text on Otammiri River to ascertain its quality and beneficial use of water.
Water And The Hydrologic Cycle
Water begins its never ceasing cycle as vapour in the atmosphere as well as the water in the lakes and oceans, provides protection against extremes of both heat and cold. Hydrologic cycle refers to the complete movement of water from the atmosphere and below the earth surface. It includes water precipitation as rain, snow, hail or dew, it journey over around and through obstacles above on and below the earths surface and its eventual evaporation and return to the atmosphere. It is the longest water purification system known to man.