Map-Based Flood Hydrology and Hydraulics
Map-Based Hydrology and Hydraulics
Austin Digital Elevation Model
Austin Watersheds
CRWR-PrePro
Presentation Outline
Study Region in West Austin
Watershed Delineation by Hand Digitizing
30 Meter Mesh Standard for 1:24,000 Scale Maps
DEM Elevations
PPT Slide
Austin West 30 Meter DEM Elevations in meters ftp://ftp.tnris.state.tx.us/tnris/demA.html
Flow Direction Grid
Stream Network for 5 cell Threshold Drainage Area
Streams with 200 cell Threshold (ᡊ hectares or 13.5 acres drainage area)
Watershed and Drainage Paths Delineated from 30m DEM
DEM Data Sources for Texas
DEM Watersheds for Austin
Selected Watersheds and Streams
HMS Schematic Prepared with CRWR-PrePro
HMS Basin File
HMS Model of the Austin Region
Maps Served on the Web
Design Precipitation Input
HMS Control File
HMS Results
Regional flood analysis in Houston
Study Region in West Houston Maps Developed using CRWR-Prepro by Seth Ahrens
Nexrad Rainfall for Storm of Oct 1994
Discharge in Buffalo Bayou at Katy October, 1994 storm
Calibrated Flow with HEC-HMS
Waller Creek DEM
Waller Creek Watershed Outlets
Waller Creek HMS Model
Flood Plain Mapping
Connecting HMS and RAS
Discharge at a Particular Cross-Section
HEC-RAS: Background
HEC-RAS: Cross-Section Description
HEC-RAS: Output
HEC-RAS: Data Translation
Digital Stream Mapping
Floodplain Mapping: Plan View
3D Terrain Modeling: Ultimate Goal
For more information about GIS and Hydrology, see http://www.ce.utexas.edu/prof/maidment To obtain CRWR-PrePro to link ArcView with HEC-HMS, see http://www.ce.utexas.edu/prof/olivera/prepro/prepro.htm To take an online spatial hydrology course, see http://campus.esri.com/campus/home/home.cfm
Email: maidment@mail.utexas.edu
Home Page: http://www.ce.utexas.edu/prof/maidment
Other information: AMS Meeting, Dallas, Jan 1999
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