The groundwater chemistry in the shallow aquifers of the coastal zone of Thiruvananthapuram district, Kerala, India have been examined in detail. Results, in general, indicate that the groundwaters is more or less deteriorated.

The energy consumed in irrigation pumping constitutes a major share of the total energy utilised for agriculture. As the increasing demand of energy has aroused viz. in electrical, oil and gas, hence there is a strong need to explore the possibility of using the alternate and renewable energy sources like wind particularly for irrigation water pumping. Keeping this in view, the present study was taken up to assess the wind potential of the region and its utilisation in irrigation pumping.

Remote sensing plays an important role to discriminate and delineate snow and ice cover in a glacial terrain which are used to estimate the snow melt run-off and also assist in environmental studies. The study area, Manasarovar Lake and the surrounding Himalayan region is the major source of water for Indus and Brahmaputra river system.

Quantification of natural groundwater recharge is a basic prerequisite for efficient groundwater resource management and is particularly vital in an area where shallow groundwater is mostly polluted with highly toxic elements. It is especially critical where large and concentrated demand for groundwater supplies exist such as in urban areas, industrial zones and irrigated fields.

Infiltration tests were conducted at three locations in the Pooppara Tribal Colony area, Idukki District, Kerala. Physico-chemical analysis of the soil samples shows that the soil type for the selected locations is sandy clay loam and is acidic in nature with low bio-manure.

The statistical analysis of hydrologic data derives importance in the planning and design of water resource projects which require information on different hydrologic events that are governed by probability distribution. The present study attempts to select an appropriate probability distribution function to forecast maximum hourly rainfall intensity during southwest monsoon at Kurnool and Ananthapur raingauge stations located in the drought prone area of Rayalseema region of Andhra Pradesh.

Watershed response to produce runoff by a rainfall event depends upon the watershed characteristic and each watershed has its exclusive characteristics. However, most of the watersheds lacks in the facility of recording runoff, in such a case, morphometric parameters of a watershed are valuable information to evaluate watershed capacity to produce runoff.

Rain is the only source of water on the earth and for conserving this precious resource, the base is the land. Shortage of rainfall coupled with its erratic distribution during rainy season causes severe water deficit conditions resulting in various intensities of droughts. Drought varies in different parts of the world depending on the amount and reliability of rainfall received in a particular region. Gulbarga district is one of the drought prone districts of the Karnataka state.

This study aims to determine trends in the annual and seasonal total rainfall over Ganga-Brahmaputra-Meghna river basins of India. The data used in this study consists of daily gridded rainfall data.

River flow response to the changing climate is a major concern in the Himalayan region. Present understanding regarding the impact of glacier shrinkage on the river flow variations is summarized in the IPCC 2007, which stated that "as these glaciers retreat due to global warming, river flows are increased in the short term, but the contribution of glacier melt will gradually decrease over the next few decades" and "the enhanced melting of glaciers leads at first to increased river runoff and discharge peaks and an increased melt season" (IPCC, 2007).