450 likes | 502 Views
National Workshop on IWRM February 02-03, 2015. Decision Support System Planning (DSS-P) for Integrated Water Resources Development & Management. Dr. R.P.Pandey Scientist F. National Institute of Hydrology Roorkee. NIH- Nodal Agency. Why a Decision Support System.
E N D
National Workshop on IWRM February 02-03, 2015 Decision Support System Planning (DSS-P) for Integrated Water Resources Development & Management Dr. R.P.Pandey Scientist F National Institute of Hydrology Roorkee
Why a Decision Support System • Misconception: A DSS takes decisions ---(No) • ------------------------------------------------------------------------------------------------------------------------------------------------ • Using a DSS, a project manager is able to make rational use of resources without an in-depth knowledge of modeling techniques • Provides timely information • Communicate result to larger audience • Open and unbiased working • Scenario analysis
DSS (P) Components • Surface water planning • Integrated operation of reservoirs • Conjunctive surface and ground water planning • Drought monitoring, assessment and management • Management of surface and ground water quality
Modeling Methodology under DSS (P) • A river basin is divided into a number of sub-basins based on the location of hydraulic structures and hydrological network • A hydrological model (NAM) is calibrated for each sub-basin to estimate the hydrological components (evaporation, rainfall recharge, overland flow, interflow and base flow) ~ Soul • An allocation model (MIKE Basin) in conjunction with hydrological inputs is used to allocate the available SW and GW ~ Heart • DSS is used to analyze scenarios ~ Brain
NAM Model under DSS (P) • Objective • NAM model provides a conceptual representation of land phase of hydrological cycle and simulates rainfall-runoff processes at the catchment scale. • Basic data requirements • Precipitation time series • Temperature time series (for snow melt modeling) • Evapo-transpiration time series • Observed discharge time series • Basic model outputs • Catchment runoff • Subsurface contributions (base flow, interflow) • Actual evapo-transpiration • Groundwater recharge and levels • Soil moisture storage content
NAM Results Observed/Simulated Surface Water Flows
NAM Results Tabular Presentation of Components of Hydrologic Cycle
NAM Results Observed/Simulated Groundwater Levels
DSS (P) Main Functionalities • Process and analyse GIS and time series information • Publish selected information (general, drought, flood..) • Model applications for long-term/short-term planning
DSS (P) – Generation & Comparison of Scenarios Properties Model explorer Model structure Tools
DSS (P) – Brief Description of Some Applications Water Availability in the Basin Specific runoff in the basin Rain fall distribution
DSS (P) – Brief Description of Some Applications Monthly Variation of Water Yield
Seasonal Planning Cropping pattern Scenario 1: Reduce the area of paddy during Rabi (More Pulse and Maize) Scenario 2: Short duration Paddy and Pulses(conjunctive use) • The likelihood of filling the Hirakud reservoir during the current or next monsoon and the risk of having insufficient water for the users at the end of a dry season.
DSS (P) – Brief Description of Some Applications Seasonal Planning of Reservoirs • For given scenarios of planned water allocation: • What is the risk of reaching critically low levels in coming dry season? • What is the likelihood of filling the reservoir in the coming wet season?
DSS (P) – Brief Description of Some Applications Conjunctive Use of SW & GW • Combined use of SW & GW in Sri Ram Sagar Project • Scenario I: no restriction on SW use • Scenario II: limited SW abstraction by head and • middle section users permitted GWT in m
DSS (P) – Brief Description of Some Applications Drought management • Drought Indicators • Assessing the impact of check dams and artificial recharge measures
DSS (P) – Applications Chattisgarh State (Study Basin – Sheonath basin) • Operation analysis of Tandula reservoir • Conjunctive use in command areas • Benefits of changes in cropping pattern and canal lining • Inter basin Transfer (from RSP to Tandula Tank) • Groundwater seasonal planning and artificial recharge
DSS (P) – Applications Odisha State (Study Basin – Hirakud & Upper Tel Basins • Conjunctive use of SW & GW in Hirakud command • Mitigation of water logging through increased GW pumping in Hirakud command • Benefits of changing cropping pattern in Hirakud command • Benefits of changing cropping pattern in Upper Tel basin • Drought management measures in Upper Tel basin
DSS (P) – Applications Karnataka State (Study Basin – Palar & Tungabhadra Basins Tungabhadra Dam Palar River Basin
DSS (P) – Applications Gujarat State (Study Basin – Mahi River Basin
DSS (P) – Applications Maharashtra State (Study Basin – Upper Bhima Basin
DSS (P) – Applications Pavana Seasonal Planning Initial Level FRL Initial Level Reduced Reduced Demands
Dissemination, Training and Outreach • Training courses • 20 training courses • Total duration: 38 weeks • Two courses in Denmark (6/3 weeks) • Detailed ToT for NIH Core Group