Extraction and re-implementation of SWAT- Model ... · b) Land-use. (CLC) Corine-Land-Cover of...

Hong Y., Vavasseur M., Louail T., Balestrat M., Sanchez-Perez J.M., Sauvage S., Therond O.

2013 International SWAT Conference, Toulouse, France

Extraction and re-implementation of SWAT-Model calculations under the MAELIA platform in order to simulate the socio-environmental impacts of norms.


Context and objectives of MAELIA platform

- Water scarcity and agriculture water-use management.

- Simulation of interactions between water resources,

agriculture management, economic effects and climate

changes in REAL-TIME.

- Assessing the environmental, economic and social impacts of

management strategies and policies.

- Multi-agent platform.


MAELIA Platform

Material

Resources

Cognitive

Resources

Actors


Modeling of hydrological processes in MAELIA

Routing phase Land phase

Other water managements


Hydrological processes in MAELIA

+ Water Cycle + Water management Hydrological

MAELIA

Jeux d’O Model (Nolot 2003, INRA)

SWAT Specific

Formalisms

Land Phase

Create a special type of

HRU named HRU-RPG

SAsubbasin = SAHRU + SAHRU-RPG

French Land-use Identification

System (RPG) to represent the

agricultural plots.

Routing Phase (Muskingum)

Land Phase HRU

Integrated Land-phase

Cropland

Water flow

Water cycle of land phase in MAELIA and SWAT

Sub-basin

iteration

HRU

iteration

Enter sub-basin loop

Enter HRU loop

Compute snowfall and snowmelt

Compute surface runoff and

infiltration

Compute soil water and lateral flow

Compute water uptake and actual ET

End HRU loop

Aggregate HRU water yields

End sub-basin loop

Compute precipitations and

temperatures for elevation bands

Compute base flow

Enter sub-basin loop

Enter HRU loop

Compute snowfall and snowmelt

Compute surface runoff and infiltration

rainfall using SCS curve number method

Compute soil water and lateral flow

Compute water uptake and actual ET

End HRU loop

Compute water yield for HRU-RPG

Aggregate all HRUs results to sub-basins

Aggregate HRU-non-RPG water yields

Compute geo-localized ponds, wetlands and

water-use (In prospect)

End sub-basin loop

Compute precipitations and temperatures for

elevation bands

Compute base flow

(a) Land phase of MAELIA

(b) Land phase of SWAT


Case study: Upper part of Garonne watershed (MAELIA Zone)

- Water scarcity in the

Adour-Garonne Basin

(AGB):

250 Million m3/year;

80% agriculture water-use.

- Firstly tested in MAELIA

Zone.

- Drainage area: 6000 km2;

Length: 140 km.


Input Data: DEM and Pre-defined sub-

watershed and river networks.

Pre-defined

sub-watershed

Pre-defined

stream networks

b) Pre-defined sub-watershed.

Elementary management areas

called Hydrographic Zones (ZH),

National Water-management

Office of France (ONEMA).

c) Pre-defined stream

networks. (AEAG)

Water Agency of AGB,

then simplified.

DEM 50m

a) DEM 50m, (IGN).

National Geographical

Institute of France.


Input Data: Soil, Landuse and Weather Station

b) Land-use. (CLC)

Corine-Land-Cover of

France, then simplified.

c) Weather Stations.

Rainfall, Temperature and

PET by 8x8 km grid;

Climatic model SAFRAN

(Météo-France).

a) Soil Types. (INRA)

National Institute of the

Agronomic Research;

Needed parameters were

estimated through observations.

Soil Types Land-use

Weather Stations

SAFRAN


First results with SWAT-calibrated results


Conclusions and perspectives

- The formalisms and hydrological processes of SWAT are

stable for integrating in other platforms or models.

- Sensitivity analysis of MAELIA platform and calibration.

- Simulation of ponds according to their different

characteristics (e.g. connectivity with river network, position

in the watershed, volume etc.).


MAELIA Application


Thank You !

Extraction and re-implementation of SWAT- Model ... · b) Land-use. (CLC) Corine-Land-Cover of...

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