Onion Creek Flooding, 30 October 2013

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Onion Creek Flooding, 30 October 2013 Number of buyouts by the City of Austin in the Onion Creek area – 323 homes Approximate amount spent on buyouts - $36 million ($8M of this from FEMA grant funding) A flooded home location

description

Onion Creek Flooding, 30 October 2013. Number of buyouts by the City of Austin in the Onion Creek area – 323 homes Approximate amount spent on buyouts - $36 million ($ 8M of this from FEMA grant funding). A flooded home location. FEMA Flood Hazard Zone. Drainage Area above Home. - PowerPoint PPT Presentation

Transcript of Onion Creek Flooding, 30 October 2013

Page 1: Onion Creek Flooding, 30 October 2013

Onion Creek Flooding, 30 October 2013

Number of buyouts by the City of Austin in the Onion Creek area – 323 homesApproximate amount spent on buyouts - $36 million ($8M of this from FEMA grant funding)

A flooded home location

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FEMA Flood Hazard Zone

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Drainage Area above HomeDrainage area = 732 km2, or 282 miles2

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Variation in SLOSH Model Storm Surge Elevations at Developed Shoreline

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Shoreline Locations - Not to scaleSt

orm

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Cat 5Cat 3Cat 1

PRELIMINARYsource: FEMA MAT, 2-26-06

Flood Water Elevations

Halloween Flood on Onion Creek Expected Hurricane Storm Surge Heights on Gulf Coast

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Halloween Flood ~ 120,000 cfs

Somewhere between 20 yr and 100 yrreturn period, perhaps 50 yrs

Halloween Flood

HEC-SSP Flood Frequency Analysisfull flood record

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http://crhphotos.com/2013/10/halloween-2013-flood/

http://crhphotos.com/2013/10/halloween-2013-flood/

Questions concerning the Halloween Flood in Onion Creek

Questions concerning the Halloween Flood in Onion Creek

Effects of Urbanization on the Onion Creek Watershed

Effects of Urbanization on the Onion Creek Watershed

FINAL REPORT€¦ · 2.5 Peak Water Surface Elevations Cross Section Ch 1235 Dee Why Creek Upstream of Pittwater Road 2.6 Characteristics of Flooding 1% AEP Event Greendale Creek

FINAL REPORT€¦ · 2.5 Peak Water Surface Elevations Cross Section Ch 1235 Dee Why Creek Upstream of Pittwater Road 2.6 Characteristics of Flooding 1% AEP Event Greendale Creek

Onion Creek Watershed - AustinTexas.govOnion @ Twin Creeks Rd 236 ONI4 04/17/2014 19.2 616 7.92 9.8 83.6 Onion @ Twin Creeks Rd 236 ONI4 05/12/2014 23.9 576 7.49 4.3 Onion @ Twin Creeks

Onion Creek Watershed - AustinTexas.govOnion @ Twin Creeks Rd 236 ONI4 04/17/2014 19.2 616 7.92 9.8 83.6 Onion @ Twin Creeks Rd 236 ONI4 05/12/2014 23.9 576 7.49 4.3 Onion @ Twin Creeks

CNDDB -- Barkley Mountain Appendix E... · ppopH01 ORO . Record QUADNAME Onion Butte Onion Butte Onion Butte Onion Butte Onion Butte Onion Butte Onion Butte ELMCODE AAABH01050 ABNKC12060

CNDDB -- Barkley Mountain Appendix E... · ppopH01 ORO . Record QUADNAME Onion Butte Onion Butte Onion Butte Onion Butte Onion Butte Onion Butte Onion Butte ELMCODE AAABH01050 ABNKC12060

NWC IH-35 AND ONION CREEK PKWY | AUSTIN, TEXAS · 2018-04-30 · 35 139,695 cpd site onion creek pkw y onion creek neighborhood atkins high school southpark meadows onion creek golf

NWC IH-35 AND ONION CREEK PKWY | AUSTIN, TEXAS · 2018-04-30 · 35 139,695 cpd site onion creek pkw y onion creek neighborhood atkins high school southpark meadows onion creek golf

Waller Creek Flooding along 45 th Street

Waller Creek Flooding along 45 th Street

Louisa Creek Flood Study - City of Townsville · A summary of the flooding results for the Louisa Creek study area are included in Table EX-1. These tables include indicative rainfall

Louisa Creek Flood Study - City of Townsville · A summary of the flooding results for the Louisa Creek study area are included in Table EX-1. These tables include indicative rainfall

BRIAR CREEK TOWNSHIP COLUMBIA COUNTY · The hazards that pose the potential threats to Briar Creek Townships are: flooding, hazardous materials accidents, storms, tornadoes, dam failure,

BRIAR CREEK TOWNSHIP COLUMBIA COUNTY · The hazards that pose the potential threats to Briar Creek Townships are: flooding, hazardous materials accidents, storms, tornadoes, dam failure,

Onion Creek Metropolitan Park - Austin, Texas...PARKS AND RECREATION BOARD MAY 27, 2014 PRESENTERS: RICARDO SOLIZ, PARD SUSAN BENZ, BENZ RESOURCE GROUP 1 ONION CREEK METRO PARK DISTRICT

Onion Creek Metropolitan Park - Austin, Texas...PARKS AND RECREATION BOARD MAY 27, 2014 PRESENTERS: RICARDO SOLIZ, PARD SUSAN BENZ, BENZ RESOURCE GROUP 1 ONION CREEK METRO PARK DISTRICT

Alewife Creek and Poplar St Flooding Mitigation Plan

Alewife Creek and Poplar St Flooding Mitigation Plan

Wolf Creek Flood May 23rd 25th 2007 IntroductionWolf Creek Flood May 23rd – 25th 2007 Introduction: This is a report on the new record flooding that occurred along the Wolf Creek

Wolf Creek Flood May 23rd 25th 2007 IntroductionWolf Creek Flood May 23rd – 25th 2007 Introduction: This is a report on the new record flooding that occurred along the Wolf Creek

Flooding in Sandy Creek Catchment, Mackay, following ... · 3333333333 Flooding in Sandy Creek Catchment, Mackay, following Tropical Cyclone Debbie An independent assessment Report

Flooding in Sandy Creek Catchment, Mackay, following ... · 3333333333 Flooding in Sandy Creek Catchment, Mackay, following Tropical Cyclone Debbie An independent assessment Report

HILLCOUNTRYgato-docs.its.txstate.edu/.../Hill_Country_Water_Resources_Guide_2013.pdfAudubon Society: National Audubon Society: Texas Barton Springs and Onion Creek ... North American

HILLCOUNTRYgato-docs.its.txstate.edu/.../Hill_Country_Water_Resources_Guide_2013.pdfAudubon Society: National Audubon Society: Texas Barton Springs and Onion Creek ... North American

WITHLACOOCHEE RIVER AND SUGAR CREEK FLOODING … · 5/6/2014  · Alt 7: Flood control levee and structure in Sugar Creek at the confluence with the Withlacoochee River Several non-structural

WITHLACOOCHEE RIVER AND SUGAR CREEK FLOODING … · 5/6/2014  · Alt 7: Flood control levee and structure in Sugar Creek at the confluence with the Withlacoochee River Several non-structural

3.1 HARRODS CREEK - msdlouky.org€¦ · tershed is subject to flooding from the Ohio River and localized flooding from its tribu-taries. There are approximately 1.4 square miles

3.1 HARRODS CREEK - msdlouky.org€¦ · tershed is subject to flooding from the Ohio River and localized flooding from its tribu-taries. There are approximately 1.4 square miles

2010 General Plan Draft2 - Springville · 5/10/2012  · Creek and Spring Creek (see Map 10‐3 Flood Hazards). The high flooding potential, especially near Utah Lake, will affect

2010 General Plan Draft2 - Springville · 5/10/2012  · Creek and Spring Creek (see Map 10‐3 Flood Hazards). The high flooding potential, especially near Utah Lake, will affect

Katherine Flooding, 2003 / 2004 Wet Season...Highway (Lot 1114) is likely due to the flooding of Tindal Creek drainage system and possibly the main drains in town as well. The flooding

Katherine Flooding, 2003 / 2004 Wet Season...Highway (Lot 1114) is likely due to the flooding of Tindal Creek drainage system and possibly the main drains in town as well. The flooding

FLOODING OF THE SINKING CREEK KARST AREA IN JESSAMINE … · UNIVERSITY OF KENTUCKY, LEXINGTON Donald C. Haney, State Geologist and Director FLOODING OF THE SINKING CREEK KARST AREA

FLOODING OF THE SINKING CREEK KARST AREA IN JESSAMINE … · UNIVERSITY OF KENTUCKY, LEXINGTON Donald C. Haney, State Geologist and Director FLOODING OF THE SINKING CREEK KARST AREA

MICHIGAN DEPARTMENT OF NATURAL RESOURCES Michigan · 2017-04-24 · [1] parking, west of boat ramp: "" "" " " # # $ $ % Backus Creek Flooding Little Mud Lake Flooding 1 d Backus Creek

MICHIGAN DEPARTMENT OF NATURAL RESOURCES Michigan · 2017-04-24 · [1] parking, west of boat ramp: "" "" " " # # $ $ % Backus Creek Flooding Little Mud Lake Flooding 1 d Backus Creek