P.O. Box 13231, 1700 N. Congress Ave. Austin, TX 78711-3231, www.twdb.texas.gov Phone (512) 463-7847, Fax (512) 475-2053

Our Mission

To provide leadership, information, education, and support for planning, financial assistance, and outreach for the conservation and responsible

development of water for Texas

. . . . . . . . . . . . .

Board Members

Peter M. Lake, Chairman │ Kathleen Jackson, Board Member │Brooke T. Paup, Board Member

Jeff Walker, Executive Administrator

TO: Board Members THROUGH: Jeff Walker, Executive Administrator

Joe Reynolds, Interim General Counsel Jessica Zuba, Deputy Executive Administrator, WSI

FROM: Reem Zoun, Director, Flood Planning DATE: March 30, 2020 SUBJECT: Proposed Flood Planning Region Boundaries

ACTION REQUESTED Consider approval of proposed flood planning regions to implement new flood planning requirements of Senate Bill 8. BACKGROUND Senate Bill 8 of the 86th Legislature, Regular Session establishes the framework for the Texas Water Development Board (TWDB) to institute flood planning across the state. Texas Water Code §16.061 requires the TWDB to prepare and adopt a comprehensive state flood plan not later than September 1, 2024, and every five years after. Further, Texas Water Code §16.062 requires the TWDB to designate flood planning regions, designate representatives from each flood planning region to serve as the initial regional flood planning group, provide technical and financial support for the regional flood planning groups, and adopt guidance principles for regional and state flood planning. In addition, Senate Bill 500 provides funding for both regional flood planning activities as well as flood science initiatives, including base level engineering, that will support development of the regional and state flood plans. As a first step in the process of implementing regional and state flood planning, TWDB staff went on a “listening tour” comprising workshops in 14 cities across Texas and two webinars to receive public input on how the TWDB should undertake its new responsibilities to best serve the needs of communities. In addition to the workshops and webinars, written public comments were accepted via email throughout the month of August.

Board Members March 30, 2020 Page 2

This preliminary public feedback was considered when the Executive Administrator (EA) proposed the publishing of an initial Flood Planning Region boundaries map to solicit further input through a public comment period. The Board approved this action at its December 5, 2019, Board meeting and following the meeting, a proposed Flood Planning Region boundaries map was posted on the TWDB website and in the Texas Register on January 17, 2020, to solicit public comments. Written public comments were received through February 3, 2020, and the Board also received oral comments at its January 30, 2020, Board meeting. The EA considered all public comments received regarding the proposed boundaries. The input received during the public comment period was thoughtful and constructive, and resulted in changes to boundaries. KEY ISSUES The Executive Administrator (EA) proposes 15 flood planning regions (see Attachment) to implement regional and state flood planning. In developing these proposed flood planning regions, coastal basins were combined with adjacent major river basins based on the potential to be influenced by interbasin flooding, ongoing coastal management efforts, and the stream contribution to bays. Smaller river basins were combined with larger basins based on similar types of flooding, relatively small populations, and practical administrative constraints limiting the number of regions that can be adequately supported. In designating flood planning regions, Texas Water Code § 16.062(b) allows the TWDB to divide river basins to avoid having an impracticably large area for efficient planning. In considering public comments received on the previously proposed boundaries, the EA determined that the benefits of splitting some larger river basins into two flood planning regions would outweigh the risks of the potential for conflicts between upstream and downstream regions. The divisions of larger river basins as shown in the Attachment were located based on the diverse conditions across their large area including geography, rainfall, topography, and land use patterns and to address some of the logistical and membership concerns that have been expressed by stakeholders. Based on stakeholder input received between January 17th and February 3th, 2020, six changes were made to the previously proposed flood planning region boundary map.

• The Canadian-Red, the Brazos, the Colorado, and the Rio Grande river basins were each subdivided into two flood planning regions,

• The Austin Oyster Creek subbasin was moved from the former San Jacinto planning region to the Lower Brazos flood planning region, and

• The San Bernard subbasin was moved from the previous Brazos flood planning region to the Lower Colorado-Lavaca flood planning region.

Board Members March 30, 2020 Page 3

The above methodology and changes resulted in the following 15 flood planning regions and their associated boundaries per the attached boundary map. The recommended region names include both a number and an associated basin title and are as follows:

1 - Canadian - Upper Red 2 - Lower Red – Sulphur - Cypress 3 - Trinity 4 - Sabine 5 - Neches 6 - San Jacinto 7 - Upper Brazos 8 - Lower Brazos 9 – Upper Colorado 10 - Lower Colorado-Lavaca 11 - Guadalupe 12 - San Antonio 13 - Nueces 14 - Upper Rio Grande 15 - Lower Rio Grande

Once the final regional flood planning administrative rules are adopted by the Board, the EA will initiate a process to openly solicit potential representatives to serve as the initial flood planning group members for each region. That process will rely on these boundaries and the initial flood planning group membership requirements as set forth in the final, adopted regional flood planning administrative rules. RECOMMENDATION The Executive Administrator recommends Board designation of the flood planning regions, their boundaries, and their associated names. Attachment: Recommended Flood Planning Region Boundaries

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Alma

Live Oak

Floresville

SantaClara

Combine

Impact

Hawley

Godley

ThreeRivers

Anson

Lawn

Trent

Tuscola

Clyde

ValleyView

Rangerville

Crandall

Groesbeck

Kemp

Sanger

Tioga

Blanco

Webberville

Petersburg

Seguin

Roby

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Coahoma

Lueders

Cibolo

BuffaloGap

Stamford

Bartonville

Forsan

Wellman

Friona

Farwell

Bovina

Idalou

Aspermont

Rotan

HaskellRule

Jayton

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O'Brien

Blackwell

Westbrook

Snyder

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Megargel

McCamey

San Benito

Lindsay

SouthPadreIsland

PortIsabel

Hebron

The Colony

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Bee Cave

Tye

Buda

Graford

RanchoViejo

Bayview

Enchanted OaksPayne Springs

Littlefield

Hawkins

Fruitvale

Nederland

Bridge City

Joshua

Chandler

Malakoff

Wells

Alto

Jacksonville

Elkhart

East Tawakoni

Edgewood

Alba

SanJuan

Winnsboro

Burleson

Uvalde

ColoradoCity

Brownwood

BigSpring

Waxahachie

Mercedes

WakeVillage

Van

FortStockton

Corsicana

Kaufman

Edna

SulphurSprings

Quitman

Pearsall

Springtown

Seagoville

Noonday

Henderson

Pelican Bay

CrossRoads

Rockwall

Hickory Creek

Hutto

Bay City

Yoakum

Bastrop

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Llano

Galena Park

KarnesCity

ForestHill

RiverOaks

Keller

Friendswood

Beverly Hills

RoanokeAddison

Northlake

Woodway

Paradise

Crowley

Haslet

Graham

Granbury

GlenRose

Azle

Dublin

Denison

Gun Barrel City

Leary

Lindale

Mineola

Mount Pleasant

WillsPoint

Shady Shores

Oak Leaf

Katy

Santa Fe

Fulton

Alamo

Elsa

RaymondvilleSan

Perlita

Kingsville

Palmhurst

MathisSinton

Beeville

Manvel

Rosenberg

Alvin

Richmond

Coleman

Stafford

Lacy-Lakeview

Gatesville

CopperasCove

Parker

Canton

Bullard

Aledo

Cool

Kennedale

Keene

Winona

WillowPark

Maypearl

Pecan Hill

Ferris

Palmview

Hondo

Ingram

Groom

Miami

BishopHills

Hereford

Muleshoe

Amherst

Stephenville

WhiteDeer

RansomCanyon

TimbercreekCanyon

Electra

LakesideCity

Texline

SunrayDalhart

Skellytown

Panhandle

Claude

Hart

Memphis

Matador

Slaton

Cresson

Schulenburg

Kerrville

Von Ormy

Andrews

Daingerfield

Maud

East Mountain

WhiteOak

Diboll

Rockdale

Heath

Angleton

Fairfield

Streetman

Anderson

BuckholtsCameron

Milano

BrenhamPrairieView

PanoramaVillage

Kilgore

Wellington

Quanah

Byers

Columbus

Scotland

Lufkin

Lefors

Beach City

BevilOaksSour

Lake

Jasper

Hardin

Woodcreek

Highland Haven

Cottonwood Shores

GraniteShoals Marble Falls Thrall

MountainCity

New HopePonder

Howardwick

Whitesboro

Gunter

Ames

Burkburnett

Hallsville

Palestine

Refugio

Dayton

Center

Latexo

RobstownAguaDulce

Petronila

Pleak

Schertz

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Sherman

Commerce

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Lago Vista

Primera CombesSanta Rosa

Bedias

Ennis

AltonSullivanCity

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Fredericksburg

Kyle

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Weston

Taylor

Granger

Jarrell

Lakeway

Weir

El Campo

Manor

Wharton

DrippingSprings

Horseshoe Bay

PilotPoint

Justin

PortNeches

Bowie

Groves

Bells

Palacios

Sachse

NewBoston

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Duncanville

Corinth

Cuero

Elgin

Smithville

Creedmoor

West Lake Hills

Iowa Park

Hutchins

EaglePass

Abernathy

McLean

Gruver

Darrouzett

Spearman

Stinnett

Sanford

Higgins

Vernon

Follett

Fate

Mustang Ridge

Childress

Wheeler

Comanche

Dickens

Vega

Gladewater

Wolfforth

Canyon

Brady

Salado

Orange

Leander

RieselHallsburg

Paducah

Fritch

CoppellFarmersBranch

Seymour

Red OakGlenn Heights

HighlandPark

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Del Rio

Sealy

Weslaco

Talty

Lockhart

Bellmead

Progreso Lakes

Gainesville

Newcastle

Cleburne

Paris

Lowry Crossing

Cactus

Anna

MelissaProsper

FairviewLucas

LavonMurphy

Forney

Princeton

Celina

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Dumas

Wilmer

MooreStation

Berryville

Uhland

Harker HeightsBelton

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Saint Jo

Gary

Reno

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Dish

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OakRidge

Saint Hedwig Hillcrest Village

Reno

Lakeside

The Hills

Volente

DeKalb

Little RiverAcademy

Spring Valley

Post OakBend

Weatherford

ProvidenceVillage

Clear Lake Shores

Palm Valley

Copper Canyon

GrandSaline

Willis

Mobile City

Sunrise Beach Village

UniversalCity

Everman

BalconesHeights

Highland Village

Converse

Hill Country VillageSelmaShavano Park

WindcrestCastleHills

Double Oak

Argyle

Bridgeport

LakeDallas

Pinehurst

Hidalgo

Southlake

Colleyville

White SettlementWestworth Village

Blue Mound

Annetta North

Cross Timber

Brookside Village

Piney PointVillage

Hedwig VillageHunters Creek

Village

Bellaire

Brookshire

Patton Village

Southside PlaceWest University Place

Taylor LakeVillage

Krugerville

Oak Point

Corral City

Lincoln Park

Progreso

Whitewright

Warren City

Log Cabin

LakewoodVillage

Clarksville City

Levelland

LaJoya

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K E R R

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K N O X

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S C U R R YF I S H E R J O N E S S H A C K E L F O R D

S T E P H E N S

M I T C H E L L N O L A N T A Y L O R C A L L A H A NE A S T L A N D

C O M A N C H E

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B R O W N

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S C H L E I C H E R M E N A R D

M A S O N

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N A C O G D O C H E S

S A NA U G U S T I N E

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T R I N I T Y

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H A R T L E Y M O O R E H U T C H I N S O N R O B E R T S H E M P H I L L

O L D H A M P O T T E R C A R S O N G R A Y W H E E L E R

R A N D A L L A R M S T R O N G D O N L E Y C O L L I N G S W O R T H

P A R M E R C A S T R O S W I S H E RB R I S C O E H A L L C H I L D R E S S

H U D S P E T H C U L B E R S O N

J E F FD A V I S

P R E S I D I O

B R E W S T E R

J E F F E R S O N

H A R D I N

O R A N G E

B A I L E Y H A L E F L O Y D M O T L E Y

C O C H R A NH O C K L E Y L U B B O C K C R O S B Y D I C K E N S K I N G

Y O A K U M T E R R YLY N N G A R Z A

W E B B

J I M H O G GZ A P A T A

S T A R R

G R A Y S O N L A M A R

D E L T A

L E O N

M A D I S O N

W I L L I A M S O N

L E E

L A M P A S A S

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S H E L B Y

S M I T H

H E N D E R S O NP A N O L A

D E W I T T

L A S A L L E

D E N T O N

E L L I SE R A T H

D E A FS M I T H

E L P A S O

L A M B

T A R R A N T D A L L A S

B A N D E R A

Alan HenryReservoir

AlcoaLake

AnzalduasChannel Dam

AquillaLake

B ASteinhagen

Lake

BardwellLake

BaylorLake

BeltonLake

BenbrookLake

Brady CreekReservoir

Brandy BranchCooling Pond

BrazoriaReservoir

BryanUtilities

Lake

CaddoLake

CalaverasLake

CanyonLake

CasaBlancaLake

Cedar BayouGenerating

Pond

Cedar CreekReservoirColorado

Cedar Creek ReservoirTrinity

ChampionCreek

Reservoir

ChokeCanyon

Reservoir

ColetoCreek

Reservoir Cox Lake / RawWater Lake /Recycle Lake

DeltaLake

E V SpenceReservoir

EagleLake

EagleMountain

Lake

Eagle NestLake /

Manor Lake

EllisonCreek

Reservoir

FairfieldLake

Farmer's Creek Reservoir

Forest GroveReservoir

GibbonsCreek

Reservoir

GrangerLake

GrapevineLake

GreenbeltLake

Gulf CoastWater Authority

Reservoir

HordsCreekLake

HoustonCountyLake

HubbardCreek

Reservoir

Hubert HMoss Lake

ImperialReservoir

InksLake

InternationalAmistad

Reservoir

InternationalFalcon

Reservoir

JimChapman

Lake

JoePool Lake

Johnson CreekReservoir

LakeAbilene

Lake AmonG Carter

LakeAnahuac

Lake Arlington

LakeArrowhead

LakeAthens

Lake Austin

Lake Ballinger -Lake Moonen

LakeBalmorhea

LakeBastrop

Lake BobSandlin

LakeBonham

LakeBridgeport

LakeBrownwood

LakeBuchanan

LakeCherokee

LakeCisco

LakeClyde

LakeColeman

LakeColorado

City

LakeConroe

Lake CorpusChristi

Reservoir

Lake CreekLake

LakeCrook

LakeCypressSprings

LakeDaniel

LakeDavis

LakeDiversion

LakeDunlap

LakeElectra

Lake ForkReservoir

Lake FortPhantom

Hill

LakeGeorgetown

LakeGilmer

LakeGladewater

LakeGonzales

(H-4)

LakeGraham

LakeGranbury

Lake Halbert

LakeHouston

Lake J BThomas

LakeJacksonville

LakeKemp

LakeKickapoo

LakeKirby

LakeKurth

LakeLeon

LakeLimestone

LakeLivingston

Lake Lyndon B. Johnson

Lake Marble Falls

LakeMcqueeney

LakeMeredith

LakeMexia

LakeMineral

Wells

LakeMurvaul

LakeNacogdoches

LakeNasworthy

Lake O'The Pines

Lake Olney/ LakeCooper

LakePalestine

Lake PaloPinto

Lake PatCleburne

LakePauline

Lake RayHubbard

Lake RayRoberts

LakeStamford

LakeStriker

LakeSulphurSprings

LakeSweetwater

LakeTawakoni

LakeTexana

LakeTexoma

LakeTravis

LakeTyler

LakeWaco

LakeWalter E

Long

Lake Waxahachie

Lake Weatherford

LakeWhitney

Lake Wichita

Lake Winters/NewLake Winters

Lake Worth

LavonLake

Lewis Creek Reservoir

Lewisville Lake

LomaAltaLake

Lost CreekReservoir

MackenzieReservoir

MartinLake

MedinaLake

MillersCreek

Reservoir

MitchellCounty

Reservoir

Monticello Reservoir

Mountain Creek Lake

Mustang LakeEast/Mustang

Lake West

NavarroMillsLake

New TerrellCity Lake

North ForkBuffalo Creek

Reservoir

NorthLake

O CFisherLake

O H IvieReservoir

Oak CreekReservoir

Palo DuroReservoir

Pat MayseLake

Peacock Site 1A Tailings Reservoir

PinkstonReservoir

PossumKingdom

Lake

ProctorLake

Randell Lake

Red BluffReservoir

Red DrawReservoir

Richland-ChambersReservoir

RiverCrestLake

Sam RayburnReservoir

SantaRosaLake

SheldonReservoir

SmithersLake

SomervilleLake

South TexasProject

Reservoir

Squaw CreekReservoir

StillhouseHollow Lake

Sulphur SpringsDraw Storage

Reservoir

Toledo BendReservoirTradinghouse

Creek Reservoir

Trinidad Lake

Twin ButtesReservoir

Twin OakReservoir

UpperNuecesLake

Valley AcresReservoir

ValleyLake

VictorBraunig Lake

WallisvilleLake

WelshReservoir

WhiteRiverLake

WhiteRockLake

WilliamHarris

Reservoir

WrightPatman

Lake

LakeNaconiche

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UV211

UV239

UV154

UV206

UV51

UV234

UV138

UV338

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UV327

UV261

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UV182

UV97

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UV258

UV77

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UV251

UV50

UV283

UV135

UV103

UV294

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UV323

UV203

UV349

UV220

UV156

UV128

UV147

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UV286

UV159

UV97

UV224

UV359

UV72

UV65

UV141

UV188

UV95

UV213

UV94

UV11

UV135

UV135

UV238

UV137

UV125

UV322

UV70

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UV8

UV349

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UV49

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UV124

UV207

UV87

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UV127

UV34

UV208

UV80

UV337

UV255

UV97

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UV97

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UV33

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UV49

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UV43

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UV6UV36

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UV350

UV118

UV206

UV64

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UV30

UV146

UV19

UV103

UV359

UV95

UV152

UV349

UV199

UV164

UV146

UV285

UV44

UV70

UV54

UV71

UV86

UV36

UV59

UV83

UV349

UV46

UV80

UV44

UV21

UV17

UV214

UV176

UV71

UV14

UV222

UV25

UV31

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UV329

UV158

UV71

UV78

UV273

UV55

UV19

UV349

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UV86

UV154

UV123

UV60

UV171UV6

UV79

UV97

UV22

UV72

UV153

UV173

UV114

UV111

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UV208

UV99

UV20

UV118

UV36

UV11

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UV302

UV115

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UV70

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UV214

UV136

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4

5

3

6

9

1011

12

13

15

14

7

8

2

1

Pun ta

De Agua Creek

Brushy Creek

Dry D

evils River

Salado Creek

Coleto Creek

Hack

berry

Draw

Pecan Bay ou

Mulberry Creek

Independence Creek

Sand

yCree

k

Bedias Cree

k

Wa shita River

Cassim

iraCr

eek

M idland Draw

Santia g o Draw

C omanche Creek

Sabi n

alRi

ver

Co leto Creek

Elm Creek

PaloDu

roCr

eek

Chacon Creek

B lancoC reek

Tunas Creek

Trujil l

o Cree

k

Palo P into Cr e ek

Los Olmo s Creek

P a int Creek

Cowhouse C reek

Yegua Creek

Beaver Rive r

Tule Creek

Petronila Creek

Tramp eros Creek

South

Ll anoRiv er

Lozie r Canyon

Cedar LCreek

Leona River

White R i ver

San Gabriel Riv er

SandiesCreek

Salt Draw

LeonRiver

Wolf Cr eek

BigCa

nyon

California Cre e k

Palo Blanco Creek

Spring Creek

Punt a De Agua Cre ek

Village Creek

San Fernan do Creek

YellowHouse

Draw

Palo Duro Creek

ToyahCreek

LostDraw

Brad y Cree k

Semin oleDraw

Middle Pe ase R iver

Hondo

Creek

Carrizo C reek

Tierr a Blanc

a Creek

Ara n sas River

SouthPease River

Nor th Concho River

NavidadRiver

Red River-North Fork

MaravillasCanyon

Whi te OakBay o u

Ala mito Creek

Howa

rdDra

w

Main Floodway

S anMiguel Ri ver

Ang elina Riv e r

Sulphur SpringsDraw

Red Riv er-Salt F orh

West Nuece s River

Terlingua Creek

Monument Draw

Concho R iver

North Pease River

Ata sc osaRive r

M idd le Concho River

W hite River

Coyan

osa Draw

San M arcos River

Lamp asas River

Littl e Cyp r ess Bayou

Coldwater Cree

k

Chi spaCree k

Frio Creek

Beals C reek

Barilla Draw

Mckenzie Dra w

Blackwater Dra w

Rita Blanca C reek

North Wi chit a R iv er

So u th Wi chit a Rive r

Devil s River

Little River

SanBe rnard R i ver

P ease River

Navasota Ri ver

M ustang Dra w

Llano River

Running Water Draw

San Saba River

Leon Riv er

Frio River

Nech

esRiv

er

Sulphur River

Co l orado River

S outh Sulphur River

NechesRiver

Lava ca Rive r

Colora do River

BrazosRiver -Double Mtn . Nor thF ork

Guad alupe R iver

Canadian River

Cana dian River

B r azos Rive r-Salt

Fork

Sabin

e Rive

r

NuecesRiver

Guadalupe Rive r

Red Ri ver-Prairi e Dog Town Fork

N eches River

Colora do Riv er

SabineR iver

Brazo

s Rive r

Rio Grande

Colorado R iver

Red River

Pecos R iver

Red Riv er

Rio Grande

N E W M E X I C O

M I S S O U R I

LOUI

SIAN

A

M E X I C O

C H I H U A H U A

D U R A N G O

C O A H U I L A

N U E V OLE O N

TA M A U L I PA S

Galveston Bay

Trinity Bay

East Bay

West Bay

East Matagorda Bay

Matagorda Bay

San AntonioBay

AransasBay

Copano Bay

Corpus ChristiBay

Baffin Bay

LagunaMadre

SabineLake

OK L A H O M A

A R K A N S A S

Nueces Bay

Espiritu SantoBay

HynesBay

MissionBay

LavacaBay

KellerBay

CarancahuaBay

Tres PalaciosBay

Cox Bay

Chris tmas

Bay

FLOOD PLANNING REGIONSTexas Water Development Board - 1700 North Congress Avenue, Austin, TX 78701 - www.twdb.texas.gov

1:1,650,000Map Scale =° 0 25 5012.5

Miles

MAP & DATA DISCLAIMERThis data was generated by the Texas Water Development Board using GIS (Geographical Information System) software. No claims are made to the accuracy or completeness of the information shownherein nor to its suitability for a particular use. The scale and locationof all mapped data are approximate. Map published on: 03/25/2020

DATA SOURCES & CREDITSFlood Planning Regions: Texas Water Development Board (TWDB) Boundaries & Roadways: Texas Department of Transportation (TxDOT)Hydrography: TWDB & The National Oceanic & Atmospheric Administration (NOAA)Adjacent States & Mexico: U.S. Census Bureau and INEGIAll data are in the public domain.

Flood Planning Regions1. Canadian-Upper Red2. Lower Red-Sulphur-Cypress3. Trinity4. Sabine5. Neches

6. San Jacinto7. Upper Brazos8. Lower Brazos9. Upper Colorado10. Lower Colorado-Lavaca

11. Guadalupe12. San Antonio13. Nueces14. Upper Rio Grande15. Lower Rio Grande Coastal and Gulf Waters

Major Reservoirs and Lakes

Major RiversMinor Rivers, Creeks and Streams

City, Town, and Village Boundaries

County BoundariesMajor Roadways