Water Management

This paper published in the South Asian Journal of Tourism and Heritage begins by highlighting the importance of the traditional small water bodies in Braj, commonly known as kunds, as important freshwater sources as well as an important part of the culture and the traditions of the area.

There were 1000 such kunds, which used to be the source of fresh water in Braj in earlier times. The water was used for multiple purposes like irrigated agriculture, domestic uses, drinking water for cattle, bathing etc. Due to rapid urbanisation, lack of maintenance and prolonged negligence in the last 50-100 years, most of the kunds today have become silted up and are nearing extinction.

The impending crisis for fresh water has forced the planners and policy makers to take cognizance of these traditional water bodies and an urgent need has been identified for taking necessary measures to restore the kunds. The present study thus aims at understanding the reasons for deterioration of the kunds and makes some technical suggestions for revival of these kunds.

This report by ACWADAM is a synopsis of the hydrogeological study carried out for BIRD-K in Pavagada, Sira and Bagepalli areas of Tumkur District, Karnataka. The study aimed at an impact analysis of recharge through borewells as well as suggesting new sites for the same.

The principle objectives of the study were:

•  Impact analysis of aquifer recharge through borewells done by BIRD-K in Pavagada and Sira Clusters
• Suggest new sites for aquifer recharge through borewells in Bagepalli cluster.

The methodology used a background study of the area through images from Google Earth. A detailed geological fieldwork in the area was carried out. Various structural and hydrogeological measurements were made to map out the aquifer systems within the area. Water levels in borewells and dug wells were measured. The study area included seven watersheds and falls in two clusters namely Pavagada and Sira. Both these clusters are located in the Tumkur district of Karnataka.

This paper published in the Economic and Political Weekly highlights the recently growing conflicts over water sharing between states in India and argues that the intensity and periodicity of these conflicts are increasing and that these conflicts are expected to get worse with the increasing uncertainty of rainfall and water availability. The document goes on to describe the latest one in the news, the conflict between Maharashtra and Andhra Pradesh over the Babhli barrage.

This past weekend was the only international film festival on water, worldwide—Voices from the Water, held in Bangalore in several different locations. Working for a water NGO, I made my schedule free to catch up on some of these movies, to understand what the current issues are and what the film circle is capturing through their lens that we don’t necessarily see from our biased eyes.

Dr G.D. Agrawal’s tapasya, his third fast-unto-death, has finally achieved the desired result.  Since 2008, Dr Agrawal has been trying to persuade the Government of Uttarakhand and the Government of India that R. (Bhagirathi) Ganga must be allowed to flow in its natural state in the uppermost reach between Gangotri and Uttarkashi.  The two governments had plans to construct three new large hydropower projects in this stretch.  Dr Agrawal’s fasts have led to the scrapping of all the three projects.

This paper by AR Shivakumar of the Karnataka State Council for Science and Technology (KSCST), presented at a national seminar organised by ISRO at NIAS Bangalore in 2010, begins by highlighting the increasing problem of scarcity of water that the city of Bangalore has been experiencing in recent years and suggests a required plan of action for a sustainable water supply system in the city.

Reviews of some of the movies screened -

“Be water, My friend”

This UNESCO funded film, “Be water, My friend” tracks the research of Professor Gordon Lightgoot, an expert on ancient water monuments as he tries to understand and rectify the alarming drying up of Karez’s in northern Iragi region of Kurdistan.

This presentation by ACWADAM on community organization in groundwater management deals with the processes involved in people’s mobilization and participation. The requisites of groundwater management include: resource enhancement, demand management, equitable distribution, institutional mechanism and controlling of free riding. It deals with groundwater management at a local scale when compared to aquifer management.

Aquifer management involves:

• Identification of aquifer on the basis of geology;
• Identification of recharge and discharge areas;
• Assessment of aquifer capacity and yield through aquifer mapping;
• Protection of recharge area and increasing the groundwater level through artificial recharge in recharge area (based on the geology);
• Treating groundwater as a common property resource;
• Encouraging community use of groundwater and restricting individual use;
• Putting in place an institutional mechanism and legal back up for community groundwater management;
• Awareness generation regarding groundwater and science of hydrogeology.

This presentation by ACWADAM on hydraulic conductivity deals with the hydrologic properties of rocks that signify the status of a rock as a good or poor aquifer. The status of a rock with regard to groundwater occurrence and movement is decided by its porosity (specific yield, more practically) and its hydraulic conductivity. These properties decide whether a rock can store and transmit groundwater.

Hydraulic conductivity is also commonly called as permeability of the rock or rock material and is its ability to allow the flow of groundwater through it. A rock with good hydraulic conductivity allows groundwater to easily flow through it.  

The presentation describes Darcy’s Apparatus, which comprises of a glass cylinder filled with porous sand. The glass cylinder with the sand bed had an inlet for inflow of water and an outlet for outflow of water. Two vertical glass tubes (manometers) are fitted in the sand tube placed at a fixed distance from each other to measure the respective levels (hydraulic heads).

The quantity and seasonality of water flow in a river may greatly change from its normal condition between a major storage and downstream, thus paving the way for drastic changes in the riverine ecosystem. ‘Environmental flow’ refers to the amount of water considered sufficient for protecting the structure and function of an ecosystem and its dependent species.

The paper goes on to describe the case of river Bhadra, which is the site of a dam that has significantly altered the natural flow of the river and describes the study that aimed at conducting the environment flow analysis of the river.