In the present study an attempt is made to derive storage allocation release rules for multi-purpose multi-reservoir system by using the results obtained from a non-linear programming model. From the optimization results, the release pattern was observed from each reservoir corresponding to their storage and inflow in each month.

A field experiment was conducted at Agronomy farm, S. K. N. College of Agriculture, Jobner to study the effect of compaction on bulk density, hydraulic conductivity and moisture content of soil during kharif seasons of the year 2002 and 2003.

The distribution of rainfall in the Tarai region of Uttarakhand is very erratic in space and time and occurrence of occasional droughts is not uncommon.

Statistical factor analysis (FA) technique has been applied to chemical data of 125 bore well water samples from Kumadvathi river sub-basin to assess the un-usefulness of such techniques for interpretation of the hydro-chemical data. FA technique identified three factors, which account for 60% of the major ion variations observed in the sub-basin, namely, TDS, carbonate and bicarbonate.

In water resources planning and management many problems are faced in estimation of flood flows in ungauged catchments. Researchers have been adopting different techniques in estimating flows from ungauged catchments for design and risk analysis of hydraulic structures. The important aspect in such situations is an assessment of Peak Maximum Rainfall (PMR).

Emphasis has been laid since long on the need for integrated catchment management and impactof landuse on catchment hydrology; but the two disciplines have not been amalgmated for creating catchment sensitive 'City Landuse plans'.

Many rivers in India are shared resources, flowing through or between more than one province and more than one country. The combined effect of climatic stochasticity, rapid population growth and inefficient water infrastructure is increasing stress on river basin ecosystems.

Geological records point out to a period of aridity 10,000 years ago, at the end stage of Pleistocene glaciation, which gradually changed to a wet phase. Copious rainfall in the Himalayan region gave rise to innumerable rivers, mainly Saraswati river along with six other rivers which flowed down in cascades bringing enormous amounts of water in the plains of Punjab, Rajasthan and north Gujarat.

This paper compares the widely used three irrigation systems, viz., drip, sprinkler and furrow, using the data observed in a laboratory farm located in the semi-arid region of Kenya. For these irrigation systems, the total irrigation requirements were 479.50, 610.55 and 783.50 respectively, but with same 428.95 mm of net irrigation requirement (NIR). The respective application efficiencies for the three systems were 89.72%, 70.31 and 54.54% indicating the drip irrigation system to be more efficient than the others in this study.

The two most important hydrological extremes are floods and droughts. These events pose serious hazards to human populations in many parts of the world. These water related disasters are caused because of large diversity in climate and topography of the country. Climate change in future is expected to have severe implications on river flows in South Asia including India. Global climate change is likely to result in severe droughts and floods in India, with major impacts on human health and food supplies.