Groundwater Recharge

Delivery of safe drinking water is vital for protecting public health and of promoting more secure livelihoods.

The traditional approach to water quality and safety management has relied on the testing of drinking water, as it leaves the treatment works or at selected points, either within the distribution system or at consumer taps. It is referred to as ‘end‐product testing’.

India is the largest user of groundwater resources in the world. It is estimated that approximately 230 cubic kilometers per year is used annually, this is more than a quarter of the total world consumption from this resource.

It is in this context that this World Bank report looks at the reasons for this quantum of groundwater usage.

The report delves into socio-economic and political reasons and looks at policies which inadvertently promote so much extraction. The report also analyses various attempts to manage this resource. These attempts range from government and international agency efforts directed to grassroots mobilisations. Finally the report comes out with suggestions to deal with this crisis.

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.

A civil society consultation was held on “Regenerating natural resources and rural livelihoods in rainfed areas of India” by WASSAN at Hyderabad in December 2010 to discuss priorities for the twelfth five year plan. The Planning Commission, Government of India has been steering the process of development in India by conceptualizing five year plans and had sought inputs from civil society organizations, activists groups, networks of CBOs / NGOs, donors and others for preparing an approach paper for twelfth plan.

The objective of the consultation workshop was to contribute to the process of defining broad contours of twelfth plan with a focus on rural livelihoods the thrust area being policy framework, funding support, institutional arrangements etc., by -

• Consolidating the lessons from good practices in promoting and protecting rural livelihoods in the country, that could be integrated in twelfth five year plan.
• Systematically articulating issues and concerns (bottlenecks) in promoting and protecting rural livelihoods, which could be addressed in the twelfth five year plan.

 It is an attempt to understand the effect of rainfall, physiography, lithology, slope and aspect, land use practices, vegetation, altitude, soil type and anthropogenic interference (e.g., road construction and settlement etc.) and other characteristics in the spring recharge zone on the water yield and water quality of the selected springs in the mid-altitudinal belt (lesser Himalaya) in western Himalaya (Uttaranchal).

Guest Post by: Parineeta Dandekar

At the first sight, Daarche Paani (‘water at the doors’) appears unreal.. on a small flat plateau called ‘Sadaa’ in konkan, an elegant cobbled walkway leads a puzzled visitor to stairs carved in stone, which go down to an ancient grove, and here is an intricate system of tanks, channels and falls which supplies water to the Panderi village and goes down as a free flowing stream, to irrigate a plantation of arecanut, pepper and mangoes in a village called Gudaghe. When I visited the place, I could see three eminent visitors, a silent lady washing her load of clothes, a fairy bluebird splashing at a tank and a huge moonmoth in one of the trees.

Stone walkway and ancient mango trees leading to Daarche Paani.
Photo: Parineeta Dandekar

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.

How SGWISS could support the Rainwater Harvesting? 

The main source of sweet water is Rain, but the water available from the rain is not regular and uniformly spread throughout year. So the rainwater could be stored by any method in rain. When the rainwater is stored on the surface but there would not be sufficient capacities of structures developed for the rainwater harvesting. Little quantity of the rainwater is recharged in the subsurface and underground.

These Articles analyse and detail the issues of rainwater harvesting and river pollution