Biophysical Impacts of RMS Practices
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Transcript of Biophysical Impacts of RMS Practices
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Biophysical Impacts of RMS Practices
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Objectives
1. Assess integrated biophysical impacts of RMS practices and large-scale developments on water availability, sediment load (and groundwater recharge)
2. Device mechanisms of incorporating RMS practices into basin IWRM planning
3. Investigate up- and out-scaling options of RMS practices using sustainability criteria of satisfying downstream requirements
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FrameworkW
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SWAT Model
ClimateSoilLUTI
WEAP Model
RMS Scenarios
L-SDev’t
Scenarios
ImpactEvaluation
Large dams and
River Junctions
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WEAP Modeling
Large-scale development interventions (practices):− Water control and storage infrastructures
− Irrigation schemes
− Hydropower plants
− Environmental flows
Improved schematization for SWAT-WEAP linkages
SEI provided first feedback on the WEAP setup
Scenario definition (development + RMS) ?
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WEAP Schematization
Dams / Reservoirs
Irrigation demands
River Networks
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SWAT-WEAP Interface
SWAT sub-catchments
Dams / Reservoirs
Irrigation demands
River Networks
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SWAT Modeling
SWAT initialized based on WEAP requirements and flow data availability
Landuse, soil and climate data improved
Variable sources area (VSA) concept implemented using TI
GIS Tool developed for the Soil-TI derivation
Calibration and RMS scenarios ?
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HRU
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Monthly mean Rainfall
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Rainfall
VegetationLand
SurfaceWater Body
Soil
Aquifer
Stream
Canopy Evaporation
Soil Evaporation
Evaporation
Transpiration
Watershed discharge
Baseflow
Overland flow
Interflow
Percolation
Throughfall
Infiltration
Capillary Rise
Capillary Rise
Unproductive water use
TARGET/Productive water use
Transfers
Minimize:
Maximize:
Optimize:
RMS Impacts on Runoff Processes
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Proportion of Rainfall Contributing to Major Hydrologic Components (Climate Forecast System Reanalysis, 31 year mean - Wet Season )
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SWAT Management Operations
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SWAT Scheduled Management Operations
Code Practice Operation
1 Terracing Simulates a terrace to the HRU
2 Tile drainage Simulates a tile to the HRU
3 Contouring Simulates a contour to the HRU
4 Filter strip Simulates a vegetative filter strip to the HRU
5 Strip cropping Simulates strip cropping to the HRU
6 fire Simulates fire to the HRU
7 Grassed waterway Simulates grassed waterways to the HRU
8 Plant parameter Updates crop parameters to the HRU