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A case-study of Continental Water dynamics in the Guadalupe and San

Antonio River Basins

Cédric DavidUniversity of

Texas at Austin

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Continental Water Dynamics

Atmospheric Data (NARR+NEXRAD)

Stream and River Flow Model

Land Surface - Atmosphere Model

(NOAH)

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Last time we metRAPID coupled with SIM-France (atmospheric, land surface, groundwater model)

24,264 river reaches

10-year simulation

Streamflow Dam influenceBi-directional river/aquifer exchanges

Operational at MeteoFrance

cf. David and Habets (2009?), second manuscript in preparation

Transition to supercomputers

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Desktop computer Lonestar

Transition to NHDPlus

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Grid cell network of SIM-FranceBest available (1 km resolution)

GIS Mapped rivers

GIS-based river networks offer much better information than gridded

networks

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Catchment shape file converted to a 900m grid of catchments

Coupling with Noah-UT (1)

Comid 1659595 1638214 …Inflow1 2.4 1.3 …Inflow 2 1.9 1.0 ……

Map of catchments

Runoff map

Runoff is spatially averaged for catchments surrounding NHDPlus flow lines

Coupling with Noah-UT (2)

Determination of wave celerities

15 min flow data

Cross lagged correlation

Results

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Some statistics about results

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Current work on Texas Gulf

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68,143 river reaches711 flow gages

Conclusions

• Adaptation of RAPID on the Lonestar supercomputer

• Adaptation of RAPID to the NHDPlus framework • Coupling of RAPID with Noah-UT• Investigation of wave celerity• Run RAPID over Guadalupe and San Antonio

River Basins – Missing water in Victoria?– Need to fix time shift

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Thank you!

Questions?