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Hydrological Assessment & Monitoring Plan M SekharNBSS & LUP M S Mohan Kumar UAS consortia Indian Institute of Science 8 th October 2013.

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Presentation on theme: "Hydrological Assessment & Monitoring Plan M SekharNBSS & LUP M S Mohan Kumar UAS consortia Indian Institute of Science 8 th October 2013."— Presentation transcript:

1 Hydrological Assessment & Monitoring Plan M SekharNBSS & LUP M S Mohan Kumar UAS consortia Indian Institute of Science 8 th October 2013

2 KWDP II (Sujala III) Coverage – Example: Chamarajanagar Hydrological investigations proposed under the program are similar to the investigations being carried out in Bermabadi WS (BWS) in Hangala Hobli, Gundlupet Taluk, Chamrajanagar district. Brief presentation of the ongoing study in BWS is highlighted. 2/18

3 Groundwater levels: Gundlupet Taluk 3/18

4 Measurements in the Berambadi WS

5 Soil moisture measurements in various plots Aqua-pro Theta -Probe TDR 5/18

6 Simulations of profile soil moisture /18

7 Crop measurements Leaf area index - 10 day frequency - using Canopy Leaf analyzer, Licor and camera with fisheye lens. Biomass - collected at critical stages of growth. Yield - collected at harvest. Development stages and crop management activities are monitored. Canopy Leaf analyzerCamera with Fish-eye Lens Licor 7/18

8 X axis is the LAI measured in the field using Licor/Laser LAI meter Y axis is the LAI simulated by the model after calibration Data includes both 2011 and 2012 experiments. Calibration of STICS crop model 8/18

9 Climate variable Total no of Rainy Days Rainfall Amount (mm) in the Year Soil TypeSandy Clay Loam Field Capacity Layer -1 (g/g)18.5 Wilting Point Layer -1 (g/g)8.5 Field Capacity Layer -1 (g/g)21.5 Wilting Point Layer -1 (g/g)12.0 Depth of Soil Layer (cm)110 Crop yield simulations 9/18

10 Surface soil moisture retrieval RADARSAT 2 Surface soil moisture (SSM): Retrieval of surface soil moisture from time series of backscatter coefficients using CDF matching approach. 30 satellite images, various crops 10/18 SSM for wet season SSM for dry season 3 RISAT-1 5 Images in 2012

11 Retrieval of LAI using Radar remote sensing LAI of Turmeric retrieved from Radarsat-2 from 130 plots is consistent with field and model trends 11/18 Rooting Depth (50 to 100 cm) T urmeric

12 Parameter 2012 FieldSatellite Field Capacity of 1 st Horizon Field Capacity of 2 nd Horizon Wilting Point of 1 st Horizon Wilting Point of 2 nd Horizon Depth of 2 nd Horizon Soil hydraulic parameters estimation from satellite 12/18

13 13/18 LULC analysis

14 Spatio-temporal trends of groundwater level in the watershed 14/18

15 Well yield variations in Berambadi WS

16 Hydrological & crop variables monitoring planned VariableSampling frequency Climatic parameters15 minute through a weather station in the WS RunoffHourly & daily; specific storms at few locations in WS Surface soil moistureWeekly at several plots in the WS Profile soil moisture Weekly at several plots in the WS; one/two 15 minute sampling gauges Groundwater levels Several BWs at 10 day to 1 month; one/two 15 minute sampling gauges Groundwater chemistrySeasonal at selected points Soil parametersSeveral locations one/two times for soil analyses Crop growth parameters10 day sampling of crop variables in several plots Remote SensingSeveral images of optical & microwave satellites for LULC, crop, soil moisture variables in the watershed 16/18

17 Clay Sandy Loam Hydrological budgets: Soil - Crop system The proposed hydrological monitoring would provide a framework for water balance estimates (e.g. recharge estimates) relevant to crop management and sustainable water use in small watersheds. 17/18

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