Excessive stress on water resources due to increase in population all over the globe has compelled the water managers to look for technically feasible alternatives for meeting the demand of water for various uses. Availability & treatment of water for drinking purpose is becoming scarce & expensive, as the population level has increased. Therefore, it has become imperative that every drop of wastewater is intercepted, treated and recycled.

Under water lake tapping is a Norwegian technique developed in that country mainly to tap the inland lakes located high up in the mountains below their normal levels for electricity generation and drinking water supply. This technique has been used for the first time in India as well in Asian region on Koyna Hydroelectric Project Stage-IV.

The main purpose of this paper is to present a somewhat unorthodox viewpoint about how the Indian Water Resources Engineers need to deal with water related extremes. Either such extreme situations are actually increasing, or the people's perceptions about such changes is becoming sharper.

Natural disasters are a tragic interruption to the development process. Lives are lost, social networks are disrupted and capital investments are destroyed. And when development plans are laid and disaster strikes development funds are diverted to the emergency. Additional aid is directed to relief and reconstruction needs to get the country "back on track" toward economic and social development.

One of the popular methods to estimate the depth of surface runoff for a given rainfall is the Soil Conservation Service Number (SCS-CN) method. In this method, variation of antecedent moisture condition (AMC) is not continuous.

Drip is considered as the most efficient irrigation method amongst methods which as it wets up only one-third cropped surface area and saves about 40 to 50 per cent of irrigation water depending upon the situation.

Conjunctive use of water is always preferred from water quality, soil quality and water resources management points of view. However, it is observed that in real practice, it is extremely difficult to plan for the conjunctive use of water for different purposes and is more difficult to keep it in implementation for long.

The Farakka Barrage Project on river Ganga, commissioned in the year 1975, mainly for diversion of 1135 cumec flow of water from river Ganga to river Hoogly through Bhagirathi, for the preservation of Kolkata Port. River Ganga due to its meandering nature is causing bank erosion problems not only in the vicinity of barrage but also in the reaches for upstream and downstream of the barrage.

Irrigation is a vital input for increasing productivity of crops. It is observed that irrigation played important role in bringing the "Green Revolution" which took place in the country after Independence.

Hemavathy reservoir project created by constructing a dam across river Hemavathy in Hassan district of Karnataka to store 1050.60 Mcum of water and to irrigate 700751 acres during Kharif and Rabi seasons.