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Welcome to PMKSY workshop “Strategies for enhancing water use efficiency” by R.K.NEMA College of Agricultural Engineering Jawaharlal Nehru Krishi Vishva Vidyalaya Jabalpur M.P. Present Status rainfall and SWR. Rainfall in mm 1200-1600 I , II 1000-1500 III,IV.V.VII,VIII
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Welcome to PMKSY workshop “Strategies for enhancing water use efficiency” by R.K.NEMA College of Agricultural Engineering Jawaharlal Nehru Krishi Vishva Vidyalaya Jabalpur M.P.
Present Status rainfall and SWR Rainfall in mm 1200-1600 I , II 1000-1500 III,IV.V.VII,VIII 600-1000 IX,X 600-800 VI Potential created 29.2 lakh ha 2011-12 Potential Utilized 16.72 lakh ha Gap of 12.96 lakh ha. Bargi Project Jabalpur , Bansagar Rewa, Tawa Hosangabad, Samrat Ashok Sagara Vidisha
Ground water status • District wise per cent utilization of GW • Over exploited-Red - 24 blocks • Critical -Brown - 5 • Semi-critical- Yellow - 18 • Safe - Green - 266 • Water table open well – 5-20 m bgl • Tube well – 4-30 bgl • Declining rate – • 0.7 to 2 m/y (Non-commands, 2.52 m ha) • Rising rate • 0.2 m/y (Canal Command area 1.46 mha)
Ground Water Status Policy has to be made for use of GW as an emergency stock of water only when rainfall or its harvest as supplement is not enough for cropping
Havlei Fields : A Prominent Source of Recharge in Kymore Plateau and Satpura Hills
Recharge through Haveli fields Characterization Mapping Evaluation – Water Balancing Improvement Multiple uses for WP Singhara cultivation Water quality Additional recharge through recharge shaft Filter for direct recharge Status of Haveli fields and future prospects
.Recharge through Haveli Fields : • Satellite data with IRS-ID PAN Sensor used to identity the Haveli areas in Patan block near Jabalpur. • 73,424 ha were under Haveli during year 2002-03 which is 11 percent of total area under the study. • An estimated spread of Haveli in Narsingpur district was 1,91,778 ha in the year 1986-87 and in Jabalpur district it was 2,78,624 ha . The total area was estimated to be reduced to 1,38,422 ha in the year 1999-2000.
Haveli -Recharge • Study Period 3 years • Location 4 (3 Narsingpur + 1 Jabalpur) • Observations Gauging of Haveli field during kharif, measuring I, K, Rainfall, area extent through Satellite images • Approach Field water balance • Extent 11 percent of total area • Contribution 4 to 6 mm per day for 90-100 day 40 to 60 cm percolation • Inference Haveli recharge contribute to additional rise in water level by 4 to 6 m
Haveli Potential • Kympore plateau and Satpura hills can contribute 326994 ham, 239388 ham and 46384 ham recharge additionally through haveli fields. • Fallow land in all the state has also similar potential for recharge.
Division wise fallow area, ,000 ha Enhancing Ground Water Recharge Percolation Pond - 50 m (L), 40 m (W), 3 m (D), 1:1 (S) 0.2 ha 2000 sq m Vol. of storage - 5244 cu m Recharge 50 % - 2622 cu m 0.262 ha m Number of ponds required for 1 ham recharge 4
Draught alleviation in rainfed kharif Percentage Runoff in cultivated field at average slope of 0-5% • Heavy soil 60 Sufficient runoff is available • Medium soil 50 • Light 30 • 10% of I ha 40 m (L), 25 m (W), 3 m (D), 1:1 (S) • Vol. of storage 2469 cu m Losses 493 cu m • Available water 1975 cu m = 19.75 cm • Sufficient for 2 irrigations by flooding or 3 irrigations by border • or 4 irrigations by sprinkler Note : Water must be used keeping this in mind in every WHS
Some Suggessions • Appendix A-Two maps are to be generated • Surface and subsurface water • Irrigated areas through different sources Data format seems not sufficient • 1.4 For IR time domain has to be considered weekly/monthly • WR and IRR are to be updated • 1.6 Draught frequency source not mentioned
Sugessions • 2.2 Firs col has to be part of row A and B • 3.1 Spatial distribution of information is required for GW sources and Canal • 3.4 Quantification is required rather than numbers