1. WATER AVAILABILITY

2. Total availability of water in earth-1.37X18 8 M ha m Fresh water – 2.8 % Saline water – 97.2% Surface water – 2.2% Groundwater- 0.6% Glaciers – 2.15 % Lakes & reservoirs – 0.01% Streams – 0.0001% Water vapour in atm. - 0.001% Soil moisture – 0.002% Economically extracted – 0.3 % Remaining is at depth > 800m

3. WATER RESOURCES IN NORTH INDIA Rivers Dams Check basins Wells Lakes, etc,

4. RIVERS  Beas,  Satluj,  Ravi,  Chenab  Jhelum.  The ganges  Yamuna

5. Water Resources Management  The north region of India has ground water resources - 31.22 km 3 surface water - 1487.4 km 3 Ultimate irrigation potential in the region is 1488 thousand ha from major and 1755 thousand ha from minor irrigation projects

6. Rainfall pattern and distribution.  Annual average rainfall is about 120 cm  North – west monsoon.  Winter (little amount)  75 percent total rainfall is received in the four month period from June-September.  Himalayas gets heavy precipitation.  Rajasthan desert is lowest with 15 cm.

7. River project estimation Name of Basin Catchment area(m ha) Average annual precipitation(c m) Total precipitation( m ha m) Mean temperature(d egree centigrade) Average annual run- off(m ha m) Indus Basin35.405619.8212.67.94 Ganga Basin97.60111108.3416.848.96 Brahmaputra Basin 50.6212261.768.238.08 West-flowing Rivers 49.1612259.9825.531.06 East-flowing Rivers 121.03100131.9226.141.19 Loni & Ghaggar Basin 16.80394.8726.2.. Total370.61549386.69..167.23