Finding Groundwater

This method is a mathematical model, in which all the components in the water balance equation are known, and the only component which is considered unknown is the rainfall recharge.

This report by Aligarh Muslim University and Central Ground Water Board (CGWB) deals with groundwater flow modelling and aquifer vulnerability assessment in Yamuna–Krishni sub-basin of Muzaffarnagar district. For evaluation of the groundwater resources and for minimizing the error of estimation, the system has been evaluated through aquifer modelling where water balance is established using partial differential equation of groundwater flow and is solved with boundary and initial boundary conditions.

It warns that groundwater quantity as well as quality are the two major problems that the country has been facing.

The rate of withdrawal of groundwater has reached “unsafe” levels in 31% of the districts, covering 33% of the land area and 35% of the population. The situation has dramatically worsened within a short span of nine years, between the assessments done in 1995 and 2004.

Taking the quantitative and qualitative aspects together, data indicates that a total of 347 districts (59% of all districts in India) are vulnerable in terms of safe drinking water in India. This is a matter of serious concern, requiring a new approach.

It was the kick-off event of an ambitious project to find solutions to the groundwater crisis in Gujarat, funded by the PepsiCo Foundation. More details of the project will follow this overview post.

Gujarat and the Mehsana region, India Source: Columbia Water Center

The  Advanced Centre for Water Resources Development and Management (ACWADAM) has created a power-point course to explain the formation of groundwater and its management.

The course consists of 6 modules; it includes the basics of understanding groundwater, study of geology, groundwater level and movement, planning and management of groundwater, storage and flow of groundwater and water quality. The modules have been made into succinct power-point presentations that include charts, diagrams and photographs besides the written word.

Content Courtesy: Solution Exchange and Nitya Jacob
Author: Nitya Jacob

India’s arteries are choking. Her rivers, the lifeline of hundreds of millions, are over-taxed, polluted and encroached. They are being mined, dammed and emptied of water. Save for the four monsoon months, most rivers are streams of drains, depending on how many cities they pass through. This year people gaped in awe at the River Yamuna (I am sure they were over-awed by other rivers elsewhere too) as for the first time since 1978 looked like a river and not a drain.

This report by CAREWATER has been prepared as part of a component on Groundwater Governance in Asia: Theory and Practice under the CGIAR Challenge Programme on Water and Food. The purpose of this collection is to guide a beginner to groundwater hydrology through the basic concepts in this subject. The problems begin with fundamentals of the subject and are followed by those which test the comprehensiveness of understanding. Most problems are illustrated and a real-world situation is related with the problem.