FEWS Stream Flow (SF) Model ~Progress Report~

1
FEWS Stream Flow (SF) ModelProgress Report

• Tanya Hoogerwerf
• 3/29/01

2
THE MODEL Study Area

• Supplied by Guleid A. Artan of the USGS
• Data for the Limpopo basin in Mozambique
• Map Source
• http//www.reliefweb.int/mapc/afr_sth/reg/floods_u
  said23mar01.htm

3
Rainfall/Runoff Simulation
To bin32
4
Rainfall/Runoff Simulation cont
5
Parameters
6
GIS-Based FEWS SF MODEL
7
FEWS SF MODEL Option 1

• Complete Terrain Analysis Option
• INPUT Hydro1K grids
• OUTPUT basins, downstream, flowlength,
  hilllength, outlets, streams, strlinks grids

8
HYDRO 1KElevation Derivative Database
9
DATA PREPARATION

• Project ESRI map data into Lambert Azimuthal
  Equal Area
• Clip grids to buffered Mozambique polygon

10
FEWS SF MODELWatershed Delineation
11
Work to be done

• Generate Basins Characteristics File Command
• Requires a CN grid, Soil Water Holding Capacity
  Grid, Soil Depth Grid, Soil Texture Grid,
  Hydraulic Conductivity Grid and Max. Impervious
  Cover Grid
• Generate Basin Response File Command
• Requires Velocity Coefficient Grid

12
SPECIAL THANKS

• Guleid A. Artan (USGS)
• HYDRO1K
• Jordan Furnans
• http//mozambique.gecp.virginia.edu/Floods/photos.
  html