1. An Analysis of the Rhône River Basin through Lyon, France
Felicia James
November 27, 2001

2. Where is Lyon?
Lyon

3. Project Objectives
To learn how to locate GIS data for anywhere in the world
To obtain data for a specific country related to water resources and water quality
To use ArcGIS software to organize and manipulate the data acquired

4. Procedure
Search the World Wide Web using to develop a list of websites for downloading GIS data
Review the references in earlier term papers for this course (GIS in Water Resources) for additional website sources
Download the available data
Convert the data to a uniform projection
Manipulate the GIS data using skills gained in this course for using ArcGIS
Manipulate the data using engineering principles

5. Useful data sources
Climate Data
River discharge data
HYDRO1k Data

6. Climate Data
Climate Data -

7. River Discharge Data
River discharge data from the Oak Ridge National Laboratory, Distributed Active Archive Center of the Earth Observing System Data Information System as part of the National Aeronautics and Space Administration's (NASA) Earth Science Enterprise program, whew!

8. GIS Data
HYDRO1k Data from the United States Geological Survey -

9. Correct DEM grid The DEM by HYDRO1k is an image file
Convert to ARC/INFO grid
Arc: Imagegrid eu_dem demgrid cubic
Correct for negative values
Grid: eu_demgrid = con(demgrid >= demgrid – demgrid)
Set ocean mask values to null values
Grid: demgridnull = setnull(eu_demgrid eq –9999, eu_demgrid)

10. Maidment lecture notes 9/18/01
Project Data
Coordinate System: Lambert Azimuthal Equal Area
Units: (meters)
Pixel Size: 1000 meters
Radius of sphere of influence = 6,370,997 meters
Longitude of Origin = E
Latitude of Origin = N
Sphere: GCS Sphere ARC INFO
Datum: D Sphere ARC INFO
Prime Meridian: 0
Maidment lecture notes 9/18/01

11. Oops!
But, make sure you also match the coordinate system of the data frame to that of the layers!

12. Test out the skills learned…
Now the fun can start!
Test out the skills learned…

13. Isolate the Rhone River Valley
Use map of France to identify location of Rhone River
Select point on river to obtain identification number
Export all segments with Level4 = 9114
Export all related basin segments

14. 1st limit extent of raster
Since the raster covers all of Europe it is rather large.
Limit its extent by going to layer properties and matching the data frame view.

15. Create Contours
Add digital elevation data, stream system, country boundary, and basin delineations to the view
Use spatial analyst to create contours…
Unfortunately the system locks up at intervals of 100 m or less 

16. Fill Sinks
The DEM data from HYDRO1k has already identified natural sinks and filled all unidentified sinks.

17. Hydrology Modeling
Unfortunately, with the large DEM the spatial analyst functions do not work.

18. Moving On… Attempt to use HEC-RAS with the GIS river network
Identify populated areas along the river
Assume a pollutant discharge from these populated areas
Estimate water quality in the river
Compare GIS calculated river flows with gage data

19. Questions???