AND GROUNDWATER DISTRICT OCTOBER 28, 2017 FLASH FLOOD PUBLIC - - PowerPoint PPT Presentation

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AND GROUNDWATER DISTRICT OCTOBER 28, 2017 FLASH FLOOD PUBLIC - - PowerPoint PPT Presentation

BANDERA COUNTY RIVER AUTHORITY AND GROUNDWATER DISTRICT OCTOBER 28, 2017 FLASH FLOOD PUBLIC INFORMATION MEETING Mission statement The principal mission of the Bandera County River Authority and Groundwater District is to protect and


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BANDERA COUNTY RIVER AUTHORITY AND GROUNDWATER DISTRICT

OCTOBER 28, 2017 FLASH FLOOD PUBLIC INFORMATION MEETING

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Mission statement

The principal mission of the Bandera County

River Authority and Groundwater District is to protect and preserve the County’s water and natural resources for the citizens of Texas. The District is also tasked with maintaining local accountability of the County’s water resources to help safeguard the property rights of the citizens of Bandera County.

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PRESERVING AND PROTECTING THE AQUIFERS

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PRESERVING AND PROTECTING THE HEADWATERS

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SLIDE 5

2002, 2012, 2015, 2016 Flood Events

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Update of Progress on TWDB Awarded Flood Protection Grant for Bandera County in Cooperation with USGS

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SLIDE 7

Bandera County City of Bandera Economic Development Coop Bandera County River Authority and Groundwater District

Local Funding Partners

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The following 15 slides are a USGS presentation on the scope of the flood project for Bandera County

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Development of a Flood Warning Tool Set for Bandera County, Texas

U.S Geological Survey, South Texas Program Office

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Outline

Introduction Key elements of a FWS Where can the USGS help Questions

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Introduction

What is a Flood Warning System? Subsystems used to monitor, predict and warn of a impending flood or flash flood. What is a Flood Atlas? A series of sequential maps that help communicate where flooding may occur over a range of river levels.

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SLIDE 12

Key Elements of a FWS

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SLIDE 13

Where Can The USGS Help?

Installation of additional stage-only gages

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SLIDE 14

Install Two Additional Stage-Only Gages

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SLIDE 15

Where Can The USGS Help?

Creation of Flood Inundation Maps and Flood Atlas.

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Creation of Flood Inundation Maps

Hydraulic Modeling Geospatial Processing

Series of sequential maps showing probable areas of flooding (Flood Atlas)

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Flood Inundation Maps translate a hydrograph, at different stages, into operational maps that communicate risk and consequences

Develop Flood Atlas

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Flood Atlas

A Flood Atlas becomes a tool for flood…

  • Preparedness
  • “What-if” scenarios
  • Response
  • Tied to gage & forecast data
  • Road/Bridge Closures
  • Recovery
  • Damage assessment

Photo Courtesy of Jerry Sides

Medina Lake - 2002

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SLIDE 19

FIM Web Mapping Application

http://wim.usgs.gov/FIMI/

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Where Can The USGS Help?

Development of Decision Support System

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Decision Support System

http://txpub.usgs.gov/txwaterdashboard/index.html

  • A mapping application interface

that provides a basin-wide common perspective for water resource managers

  • DSS will incorporate data from:
  • National Weather Service
  • USGS
  • After Action Reports (AAR)
  • Similar to a Texas Water Dashboard
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SLIDE 22

Summary

Photo Courtesy of Jerry Sides Upper Medina River near Bandera, Tx. -2002

  • Key Elements of a FWS
  • Where Can the USGS Help
  • General Approach
  • Installation of Additional Gages
  • Create Hydrologic Atlas
  • FIM Web Mapping Application
  • Decision Support System (DSS)
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End of USGS presentation slides

Photo courtesy of Larry B. Thomas Medina River at Bandera City Park, Bandera, Texas South Texas Program Office 210-691-9219

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Flood Project Updates & Additional Resources

OCTOBER 28, 2017 FLASH FLOOD PUBLIC INFORMATION MEETING

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West Prong Medina River @ Carpenter Creek

➢Installed and Operational as of September 2017

➢USGS site # 08178871

https://nwis.waterdata.usgs.gov/nwis/uv/ ?site_no=08178871

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North Prong Medina River @Brewington Crossing Expected Installation start by end of November 2017

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Website Access- http://www.bcragd.org/river-gages/

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Weather Station @ BCRAGD

440 FM 3240 Bandera, TX

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Weather Station online viewing

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Medina River @ Patterson Ave Medina, TX (Moffett Park)

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Online Stream Gage Example from 2012 flood event: Medina River @ Patterson Ave Medina, TX (Moffett Park)

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Subscribe to USGS WaterAlert from any gauge link

http://www. bcragd.org/ river-gages/

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Subscription Form

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Additional Resource: USGS WaterWatch https://waterw atch.usgs.gov/

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Texas Water Development Board (TWDB) - TexasFlood.org

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TWDB- “Are the Rivers Near Me Rising?”

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TWDB- TexasFlood.org

You can subscribe to mobile alerts via USGS gages by going to texasflood.org. From there, click "Are th the riv rivers near me risi rising?" " and zoom into your area. Then click the dots near you to see river gage info along with the option to subscribe to mobile alerts. Road con

  • nditions can also be accessed from texasflood.org. From there, click

"I I need to

  • evacuate, which roa
  • ads ar

are op

  • pen?"
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SLIDE 38

Connect on Social Media

Follow @USGS_TexasFlood and @USGS_TexasRain on Twitter to get current water level and precipitation data during flooding or severe rainfall events.

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Texas Floodplain Management Association (TMFA)

Organization of professionals with a wide range of experience and expertise in:

➢ Floodplain Management ➢ Flood Hazard Mitigation ➢ National Flood Insurance Program (NFIP) ➢ Flood Preparedness ➢ Flood Warning ➢ Flood Awareness

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TFMA Major Programs

➢ Professional Certified Floodplain Managers (CFM) Program ➢ Education and Training ➢ Mentor Program ➢ Governmental Relations ➢ Freeboard Survey ➢ Public Outreach

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This is Flash

Flood Alley

because of a

Repeated Reality

Video by Travis County STAR Flight

NEVER drive into a flooded roadway, it only takes ONE foot of moving floodwaters to carry away a car. Also, be aware that roads may be damaged underneath floodwaters.

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Contact TFMA

P.O. . Bo Box x 1237 Ce Cedar r Park rk, Texas 78630 Phone: : (5 (512) 260-1366 Fax: (5 (512) ) 260-1409 Web Sit Site: : tf tfma.o .org NEW Email: il: tf tfma@tfma. Foll llow @TexasCFM https:/ ://www.facebook.com/TXFMA

  • rg
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National Weather Service Bandera County Emergency Management Bandera Electric Cooperative (host)

Thank you to Today’s Collaborators!