Temperature

These River Water Quality Reports prepared by the Central Water Commission (CWC) summarise the river water data collected under its long term monitoring programme. The Central Water Commission monitors water quality at 371 key locations covering all the major river basins of India by maintaining a three tier laboratory system for analysis of 41 water quality parameters.

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This presentation by ACWADAM deals with processes that scour the earth’s surface while simultaneously building it elsewhere. The presentation deals with weathering, erosion and deposition of rocks -Read More

• The process of breaking down and alteration of rocks and formation of new materials from them is known as weathering of rocks.
• The group of processes whereby the materials of the earth’s crust are moved from one place to another by running water (including rainfall), waves and current, glacier ice and wind is known as erosion.  
• The processes whereby the material being carried during the process of erosion is deposited either through physical processes (such as drop in the velocity of flowing water) or precipitation of dissolved material under a set of conditions for instance, the deposition of limestones from water rich in calcium carbonate is known as deposition.

This presentation by ACWADAM deals with springs, their characteristics and types. Springs are indicated by locations or points on the ground surface, where water from beneath the ground emerges on to the surface. A common example is of an overflowing unconfined aquifer.

Some of the characteristics of springs are:Read More

• Discharge from spring may be constant or variable.
• Springs can be perennial or seasonal.
• Discharge from a spring may vary between from a trickle to about 100 cum per second.
• Difficulty in access.
• Variation in discharge.
• Temperature of spring water may vary from mean atmospheric temperature to lower or higher, even boiling temperatures. Hot quality water springs are common to many parts of the world.

Integrated Hydrological Data Books are a compendium of important hydrological information of twelve non-classified basins (i.e., other than Ganga and Brahmaputra) consolidated at the national level by the Central Water Commission (CWC).

It covers basic hydrological data on gauge, discharge, silt, sedimentation and water quality collected on a regular basis by the CWC regional field offices, who document it in the form of a Water Year Book, Sediment Year Book and Water Quality Year Book. These along with the relevant land use statistics collected by the Ministry of Agriculture are integrated into this Data Book.Read More

The information is of use to planners, researchers, policy makers and the public at large.