Water Balance for the Forgotten River Segment of the Rio Grande/Bravo
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Water Balance for the Forgotten River Segment of the Rio Grande/Bravo Rebecca Teasley May 3, 2005 Surface Water Hydrology
description
Water Balance for the Forgotten River Segment of the Rio Grande/Bravo. Rebecca Teasley May 3, 2005 Surface Water Hydrology. Outline. Forgotten River Basin Data Sources NARR to ArcGIS June 1981 Rainfall Comparison Conclusions. The Forgotten River. Data Sources. NCDC Rain Gages - PowerPoint PPT Presentation
Transcript of Water Balance for the Forgotten River Segment of the Rio Grande/Bravo
Water Balance for the Forgotten River Segment of
the Rio Grande/Bravo
Rebecca Teasley
May 3, 2005
Surface Water Hydrology
Outline
• Forgotten River Basin
• Data Sources
• NARR to ArcGIS
• June 1981 Rainfall Comparison
• Conclusions
The Forgotten River
Data Sources
• NCDC Rain Gages
• IMTA Rain Gages (Mexican Institute of Technology)
• IBWC Stream Gages
• NARR Evaporation & Precipitation Data
Upper Basin – 8030 km2
Lower Basin – 8550 km2
Forgotten River Basin
Stream Gages
El Paso
Ft. Quitman
Presidio
NCDC & IMTA Rain Gages
El Paso
Ft. Quitman
Presidio
NARR to GIS Methodology
Web Browser
Excel
Visual Basic
Excel
Arc Hydro Feature Class with Time Series
NARR to GIS
http://nomads.ncdc.noaa.gov:9091/dods/
http://nomads.ncdc.noaa.gov:9091/dods/NCEP_NARR-A_MONTHLY_3hr
http://nomads.ncdc.noaa.gov:9091/dods/NCEP_NARR-A_MONTHLY_3hr/197901/19790101/
Change .info to .ascii?acpc[0][0][0]
Returns the precipitation value at:
Time 0:00Z
Latitude 0.0
Longitude -220.0
NARR Domain
• Longitude: -220°E to -0.625°E [0:586]
• Latitude: 0°N to 89.625°N [0:240]
• Altitude: 1000 to 100 [0:29]
• Time: 00Z to 21Z01 [0:8]
.ascii?.apcp[0:7][77:86][301:308]
Returns arrays of precipitation values over the Forgotten River for all 8 time periods in
the NARR Monthly-3hr
Time Array Latitude Array Longitude ArrayNARR Variable
NARR Grid
Legend
RasterSeriesIDW: Raster_774
Value
High : 97.2265
Low : 0.000829981
NDCD/IMTA IDW Interpolation
Legend
RasterSeriesNRK: Raster_774
Value
High : 63.529
Low : 11.6391
NARR Kriging Interpolation
Lower Basin-June 1981
0
10
20
30
40
50
60
70
80
90
100
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33
Subbasin
mm
/mo
nth
NCDC NARR Kriging
Upper Basin – June 1981
0.0
5.0
10.0
15.0
20.0
25.0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Subbasin
mm
/mo
nth
NCDC NARR Kriging
Average Precipitation
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
Lower Basin Upper Basin
mm
/mon
th
NCDC NARR Kriging
NCDC/IMTA NARR
Conclusions / Future Work
• Conclusions– Forgotten River is an appropriate name– More analysis of NARR and rain gage data is
needed to draw conclusions
• Future Work– Complete Monthly Water Balances for 1981
Acknowledgements
• Jon Godall• Carlos Patino• Dr. David Maidment
• My Real Estate Agent & Mortgage Broker for Helping Close on My First House Yesterday
Questions?
