modelling flood hazard downstream the dam … · • conagua has started involving young...

Modelling Flood Hazard Downstream the Dam Venustiano Carranza, Coahuila, Mexico

WHY?

• Young Flood Risk Managers (FRMs) generateinformation which could be useful andunderstandable by stakeholders as decisionmakers, urban planers and end users.

• Young FRMs can bridge the communication andtechnology gap between communities andscientists with an inter-disciplinary approach.

• Floods, from 1992 (Rio de Janeiro Earth Summit)to 2012:

Source: UNISDR, 2012

HOW?

• Using Open Source technologies availableworldwide.

• Validating results.• Providing understandable outputs to end users.

WHATS NEXT?

• CONAGUA has started involving youngprofessionals to estimate flood extents.

• WYN and UN-MGCY work continuously to connectyoung professional focused in Disaster RiskReduction (DRR).

• WYN will coordinate to further build a strongercommunity e.g. through WYN-UN-MGCY plus anyother organizations, agencies and institutions.

• Connect young professionals and researchers oninnovative DRR (research) projects.

• Supporting youth engagement in the InternationalNetwork for DRR.

Contact: Miguel Angel Trejo Rangel, Water Youth Network (WYN): m.trejo@wateryouthnetwork.org

Input Data

Set Up theModel

Results

Validation

Final Outputs

Input Data

Set Up the

Model

Results

Validation

Final Outputs

Policy of Operation of the Dam

DEM(30 x 30 m)

• Mesh resolution: 30 x 30 m• Manning Roughness: 0.030• Discharge: 3,936 m3/s (Tr ~50 years)

Study area Digital Elevation Model

Water Depth Velocity Severity

Maps for decision makers

June 21st, 2010

Hurricane Alex hits

July 11th, 2010

Maps available on internet

Pictures taken on July after hurricane Alex hit the area of Coahuila

Validation by local authorities

http://www.atlasnacionalderiesgos.gob.mx

Source: CONAGUA, 2010