1. BY NISARG

2.  A RIVER IS A NATURAL WATERCOURSE
FLOWING TOWARDS AN OCEAN, A LAKE OR A
SEA.
 RIVERS ARE INSEPARABLE PARTS OF OUR
COUNTRY.
 A RIVER NOT ONLY FLOWS DOWN THE WATER
INTO SEA, BUT ALSO CARRIES WITH HER
VARIOUS DEPOSITS AND MINERALS IN
DISSOLVED FORM.

3.  RIVER MOUTH, WHERE FRESH WATER OF THE
RIVER MERGES WITH THE SALINE OCEANIC
WATER, IS THE LARGST BIO-PRODUCTIVE
AREA.
 RIVERS ARE IMPORTANT SOURCES OF WATER
FOR HOUSEHOLDS, INDUSTRY AND
AGRICULTURE.
 IT PROVIDE US WITH FOOD, ENERGY,
TRANSPORTATION ROUTES, AND WATER FOR
IRRIGATION AND FOR DRINKING.

4. TEESTA
RIVER

5.  DAMS ARE STRUCTURES THAT HOLD BACK
WATER, OR OTHER LIQUID MATERIAL
 REASONS TO BUILD A DAM:
GENERATION OF HYDROELECTRICITY,
IRRIGATION, CONTROL FLOODING.
 ACCORDING TO THE INTERNATIONAL
COMMISSION ON LARGE DAMS, THE
HEIGHT OF THE DAM FROM THE BASE TO
ITS APEX MUST BE 15 METRES OR MORE,
TO CALL IT A LARGE DAM.

6.  DUE TO DAMS, FERTILE PLAINS WOULD
SUBMERGE, PEOPLE WOULD BE DISPLACED,
FORESTS AND AGRICULTURAL LAND WOULD
BE LOST, AND SAFETY OF DAMS, FLOODS
ETC.
 DAMS ARE EXTREMELY EXPENSIVE TO BUILD
AND MUST BE BUILT TO A VERY HIGH
STANDARD.

7. DAM

8.  THANK YOU…..