Research Papers

Interdependence of glacial fluctuations to hydrometeorology and sediment transfer in the connected river basins is well recognized in the Himalayan region. Considering the increased rates of glacial recession during past few decades, possibility of creating new lake basins by glacial melt and damming of rivers followed by lake outbursts and related flash floods is likely to increase.

This report of a study commissioned by the Institute of Development Studies on the Community Led Total Sanitation (CLTS) site presents the findings of the survey that was conducted in Himachal Pradesh to assess the progress made by the state in rural sanitation, in the context of the sanitation revolution, which is said to have occurred in the state of Himachal Pradesh in the last few years. 

Himachal Pradesh has a population of about 6.9 million and is over 90% rural. It has a relatively good record on human development indicators and access to public services. However, it showed a dismal awareness on the sanitation front till a few years ago.For example, in 2004, household toilet coverage in rural areas of Himachal Pradesh was estimated at about 28%. In early 2005, the Government of Himachal Pradesh adopted a new strategy to secure better rural sanitation results, which included:

Two important metro cities of India, viz. Bangalore and Chennai are discussed. The aim of the study was to understand the problems of increasing flooding incidences in urban areas and related contexts of urban development and ecological issues. Data of secondary origin have been collected and interpreted in the context of flood risks and urban management. The paper also conveys wider issues and lessons for flood challenges in Indian cities and towns.

However, increasing anthropogenic intervention in the recent times appears to be contributing to terrain instability in addition to natural factors, as observed by increasing frequency and magnitude of landslides since 1970.

During August and September 2010, Uttarakhand Himalaya witnessed large-scale slope destabilization, particularly along the roads where widening work was in progress leading to huge damage. The cause of regional-scale landslides has been attributed to exceptionally high rainfall in the region during September. When the average rainfall for the month of August and September from 2000 to 2009 is compared with rainfall data of the same period of 2010, it was found that in September 2010, 336 per cent higher rainfall was received by the area. However, the question that arises is: was it unusual rainfall-induced calamity or a result of human intervention?

The study area was located in Halol Range,Panchmahal District, Gujarat, stretching between long. 22°25′41″N and 22°29′06″N, and lat. 73°31′23″E and 73°35′35″E. Preservation plots present in the study area were selected for the current study.

It explores the understanding of the local controls on the retreat of glaciers of the Baspa valley in Himachal Pradesh. The geomorphic records mapped are accumulation zone, exposed ablation zone, moraine-covered ablation zone, snout, deglaciated valley, lateral moraine, medial moraine, terminal moraine and hanging glacier.

Fluoride is essential for normal bone growth, but its higher concentration in drinking water poses great health problems and fluorosis is common in many parts of India.

The decision to act or not act, and further how to act in the face of unknowns or uncertainties is the subject matter of the precautionary principle (PP). It is against this historical backdrop of unknowns in environmental governance that the present study on the precautionary principle was conducted.

The present framework for environmental governance provides a number of areas where precaution can and must be applied. In addition to these areas, the present report is the outcome of a descriptive study that shows the extent to which key elements of the precautionary principle are embedded in the specific case of two environmental laws related to coasts. The study examines key areas of the clearance continuum (law-making, clearance and monitoring) through a single broad question: To what extent is the approach of precaution embedded in decision-making under the CRZ Notification 1991 and the Water Act, 1974?

Sridhar attempted to examine this question on a continuum that examines a) the text of the law, b) the conditions under which projects are cleared or rejected and c) issues related to the monitoring of these conditions. The Asia and Pacific Workshop Report of the Precautionary Principle Project declared that there are both explicit and implicit uses of the precautionary principle. It states that there are some instances where the PP’s application is explicit and unambiguous whereas in other decisions the PP is implicit. They also raise an important point that to actually determine whether a decision was indeed precautionary or not (where it is not explicit) requires an examination of the context and motivations for decisions and management interventions.

Groundwater is a natural replenishable resource. It is an important source for various purposes, including drinking, irrigation and industrial, due to insufficient surface water supply and frequent failure of monsoon. Identification of groundwater zones depends upon many factors such as distribution of rainfall, runoff, grain size of soil, topographic features, type of landform, drainage conditions, lithological characteristics, land use practices, depth to groundwater level and environmental constraints, which are not uniform in any area. 

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The paper informs that the conventional wisdom that ‘more forest is always better’ has dominated policy making in the management of forested watersheds. In the context of the supposed hydrological regulation service provided by forest ecosystems, however, hydrologists have debated this assumption for more than two decades.