stephen swan ce 394k 2 april 22, 2010 1. project background dallas and the trinity river flood of...
TRANSCRIPT
![Page 1: Stephen Swan CE 394K 2 April 22, 2010 1. Project Background Dallas and the Trinity River Flood of 1908 Current Flood Control Measures Initial](https://reader035.vdocuments.mx/reader035/viewer/2022062714/56649d1f5503460f949f2838/html5/thumbnails/1.jpg)
1
Floodwater Management in Dallas, TX
Stephen SwanCE 394K 2April 22, 2010
![Page 2: Stephen Swan CE 394K 2 April 22, 2010 1. Project Background Dallas and the Trinity River Flood of 1908 Current Flood Control Measures Initial](https://reader035.vdocuments.mx/reader035/viewer/2022062714/56649d1f5503460f949f2838/html5/thumbnails/2.jpg)
2
OUTLINE
Project BackgroundDallas and the Trinity RiverFlood of 1908Current Flood Control MeasuresInitial ModelingFuture Work
![Page 3: Stephen Swan CE 394K 2 April 22, 2010 1. Project Background Dallas and the Trinity River Flood of 1908 Current Flood Control Measures Initial](https://reader035.vdocuments.mx/reader035/viewer/2022062714/56649d1f5503460f949f2838/html5/thumbnails/3.jpg)
3
CITY OF DALLAS
Population: 1.2 million 8th largest city in the nation Average annual precipitation
Rainfall: 33.7 in Snow: 2.5 in
Located along the Trinity River in the Upper Trinity River Basin
http://www.dallascityhall.com/info/about.html
![Page 4: Stephen Swan CE 394K 2 April 22, 2010 1. Project Background Dallas and the Trinity River Flood of 1908 Current Flood Control Measures Initial](https://reader035.vdocuments.mx/reader035/viewer/2022062714/56649d1f5503460f949f2838/html5/thumbnails/4.jpg)
4
TRINITY RIVER AT DALLAS
Three forks meet before Dallas Clear, West, and Elm Forks East Fork meets southeast of Dallas
River course 710 mile length Empties into the Gulf of Mexico
Average annual flow Last ten years: 800 - 4000 cfs
http://en.wikipedia.org/wiki/File:Trinity_Watershed.png
![Page 5: Stephen Swan CE 394K 2 April 22, 2010 1. Project Background Dallas and the Trinity River Flood of 1908 Current Flood Control Measures Initial](https://reader035.vdocuments.mx/reader035/viewer/2022062714/56649d1f5503460f949f2838/html5/thumbnails/5.jpg)
5
FLOOD OF 1908
Worst recorded flood in Dallas’ history Trinity River
52.6 feet deep 1.5 miles wide
Estimated damage : $2.5 million 4,000 people left homeless Five were killed Began the design and implementation of flood control
systems in Dallas
http://www.dallashistory.org/history/dallas/dallas_history.htm
![Page 6: Stephen Swan CE 394K 2 April 22, 2010 1. Project Background Dallas and the Trinity River Flood of 1908 Current Flood Control Measures Initial](https://reader035.vdocuments.mx/reader035/viewer/2022062714/56649d1f5503460f949f2838/html5/thumbnails/6.jpg)
6
DALLAS FLOOD CONTROL
Levees East Levee: 11.5 mi West Levee: 13.4 mi Rochester Levee: 5.1 mi Average height: 28 ft
Pumping Stations Stations: 16 Pumps: 63 Flow rate: 4,399 cfs
Pressure Sewers Sewers: 6 Flow rate: 19,868 cfs
http://www.ci.dallas.tx.us/sts/html/fc.html
![Page 7: Stephen Swan CE 394K 2 April 22, 2010 1. Project Background Dallas and the Trinity River Flood of 1908 Current Flood Control Measures Initial](https://reader035.vdocuments.mx/reader035/viewer/2022062714/56649d1f5503460f949f2838/html5/thumbnails/7.jpg)
7
LEVEE SYSTEM
Appendix A, Periodic Inspection Report, Dallas Floodway Project, USACE
![Page 8: Stephen Swan CE 394K 2 April 22, 2010 1. Project Background Dallas and the Trinity River Flood of 1908 Current Flood Control Measures Initial](https://reader035.vdocuments.mx/reader035/viewer/2022062714/56649d1f5503460f949f2838/html5/thumbnails/8.jpg)
8
USACE PERIODIC INPECTION 2007
USACE 5 year inspection Dallas levee system Unacceptable East levee
47% below Standard Project Flood West levee
42% below Standard Project Flood Issues with other flood protection
Periodic Inspection Report, Dallas Floodway Project, USACE
![Page 9: Stephen Swan CE 394K 2 April 22, 2010 1. Project Background Dallas and the Trinity River Flood of 1908 Current Flood Control Measures Initial](https://reader035.vdocuments.mx/reader035/viewer/2022062714/56649d1f5503460f949f2838/html5/thumbnails/9.jpg)
9
HEC-HMS MODELING
water.usgs.gov
USGS Streamflow Gauge 08057000 at Downtown Dallas
![Page 10: Stephen Swan CE 394K 2 April 22, 2010 1. Project Background Dallas and the Trinity River Flood of 1908 Current Flood Control Measures Initial](https://reader035.vdocuments.mx/reader035/viewer/2022062714/56649d1f5503460f949f2838/html5/thumbnails/10.jpg)
10
HEC-HMS MODELING
Jessica Baker, Halff Associates
Cedar Springs Branch at Turtle Creek
![Page 11: Stephen Swan CE 394K 2 April 22, 2010 1. Project Background Dallas and the Trinity River Flood of 1908 Current Flood Control Measures Initial](https://reader035.vdocuments.mx/reader035/viewer/2022062714/56649d1f5503460f949f2838/html5/thumbnails/11.jpg)
11
HEC-HMS MODELING
Appendix A, Periodic Inspection Report, Dallas Floodway Project, USACE
100-year conditions outflow at Cedar Springs Branch, Junction 8
![Page 12: Stephen Swan CE 394K 2 April 22, 2010 1. Project Background Dallas and the Trinity River Flood of 1908 Current Flood Control Measures Initial](https://reader035.vdocuments.mx/reader035/viewer/2022062714/56649d1f5503460f949f2838/html5/thumbnails/12.jpg)
12
HEC-SSP MODELING
Annual peak flows for USGS 08057000 at Dallas, TX
![Page 13: Stephen Swan CE 394K 2 April 22, 2010 1. Project Background Dallas and the Trinity River Flood of 1908 Current Flood Control Measures Initial](https://reader035.vdocuments.mx/reader035/viewer/2022062714/56649d1f5503460f949f2838/html5/thumbnails/13.jpg)
13
HEC-SSP MODELING
Annual peak flows distribution
![Page 14: Stephen Swan CE 394K 2 April 22, 2010 1. Project Background Dallas and the Trinity River Flood of 1908 Current Flood Control Measures Initial](https://reader035.vdocuments.mx/reader035/viewer/2022062714/56649d1f5503460f949f2838/html5/thumbnails/14.jpg)
14
FUTURE WORK
HEC-RAS Modeling Model the current levee system against 100-year
flood conditions Determine levee failures from the 100-year flood Compare 100-year flood failures to Standard
Project Flood failures
![Page 15: Stephen Swan CE 394K 2 April 22, 2010 1. Project Background Dallas and the Trinity River Flood of 1908 Current Flood Control Measures Initial](https://reader035.vdocuments.mx/reader035/viewer/2022062714/56649d1f5503460f949f2838/html5/thumbnails/15.jpg)
15
QUESTIONS?