Presentation on theme: "WATER RESOURCES DEVELOPMENT & UTILIZATION IN WESTERN INDIA ARAVAZHI.T BTE-06-002."— Presentation transcript:
WATER RESOURCES DEVELOPMENT & UTILIZATION IN WESTERN INDIA ARAVAZHI.T BTE-06-002
Indias Water Budget Annual precipitation - 4000 km3 Annual flow per year for the Indian rivers -1953 km3. Annual replenishable groundwater resources -432 km3 Annual utilizable surface water 690 km3 per year Annual groundwater resources 396 km3 per year Cherrapunji -Highest Rainfall in the world
Major Rivers Of Western India Name of the RiverLength(km)Catchment Area(sq km) Sabarmati37121674 Mahi58334842 Narmada131298796 Tapti72465145 Mahanadi851141589 Godavari1465312812
Basin Wise Average Flow And Utilizable Water Name of the RiverAverage annual flow (km³/yr) Utilizable flow (km³/yr) Sabarmati3.81 Mahi11.023.1 Narmada45.6434.5 Tapti14.8814.5 Mahanadi28.4818.3 Godavari110.5476.3
Rainfall Conditions Annual rainfall of less than 500 mm is experienced in western Rajasthan and adjoining parts of Gujarat. Some parts of Western Rajastan receives annual rainfall of less than 100 mm. Nearly 80 per cent of the land in the Konkan, which receives the highest rainfall on the West Coast.
Average Annual Rainfall Of The Western States StateMeteorological Divisions Average annual rainfall (mm) Gujarat Gujarat region Saurashtra and Kachchh 1,107 578 GoaKonkan and Goa3,005 Maharashtra Konkan and Goa Madhya Maharashtra Marathwada Vidarbha 3,005 901 882 1,034 Rajasthan West Rajasthan East Rajasthan 313 675
Irrigation Sources Name of the state CanalswellsTanksOther Sources (%) Total gross irrigated Area (1000 ha) No% % % Goa1233--2467-36 Gujarat72020287179351-3643 Maharastra521---321--3002 Rajastan220033426663218316743 D & N haveli (UT) 1334---254
Irrigation Projects Name of the stateMajor irrigation projectsMedium Irrigation projects Goa12 Gujarat22132 Maharastra66273 Rajastan10101
Recharge Of Aquifers In western indias unconfined alluvial aquifers, it is being increasingly realized that groundwater depletion can be countered only by importing surface water. Sardar Sarovar Project (SSP) The purpose of the project is to identify reliable sources of water of sufficient quantity and quality to supply.
Gross Irrigated Area StateGeographical area (m ha) Gross Area under cultivation (m ha) Gross area irrigated (m ha) Gross area irrigated to gross area cultivated (%) Net area irrigated (m ha) Goa0.370.1650.03621.10.023 Gujarat19.60210.0823.65536.2533.002 Maharastra30.77121.3273.14914.7652.567 Rajastan34.2419.6726.3612.3355.232 D & N haveli 0.0490.0270.00518.5190.005 Daman & Diu 0.0110.0050.001200.001
State wise Ultimate Irrigation Potential & Potential Created stateUltimate potetial% of PC to UIP MMIMI-SurfaceMI- Groundwater MMIMI- Surface MI- Groundwater Gujarat3000347275647.67134.8787.59 Maharashtra41001200365279.00141.1797.37 Rajastan2750600177890.2534.83260.46
State Wise Growth Rate In Groundwater Irrigated Area (1960-1 to 2002-3) State1960-1 to 1980-11980-1 to 2002-031960-1 to 2002-3 Gujarat6.502.354.05 Maharashtra3.353.182.79 Rajasthan188.8.131.52
Reference http://www.ias.ac.in/currsci/sep102005/794.pdf http://www.iwrs.in/iwr.htm A.M.Michael Irrigation theory & practice A. Narayanamoorthy Trends in Irrigated Area in India: 1950-51 to 2002-03