Karnes County

PROJECT FUNDING REQUEST

BOARD DATE: December 17, 2020 PRESENTED BY: Reem Zoun

ACTION REQUESTED Consider approving selected applications and authorizing the Executive Administrator to negotiate and execute contracts for grant funding in an amount not to exceed $44,693,945 from the Flood Infrastructure Fund for watershed flood protection planning studies (Category 1) and authorizing the transfer of $44,693,945 from the Flood Infrastructure Fund to the Research and Planning Fund, as authorized by Texas Water Code Section 15.534(a)(8).

STAFF RECOMMENDATION Approve No Action

BACKGROUND Passed by the 86th Texas Legislature and approved by voters through a constitutional amendment, the Flood Infrastructure Fund (FIF) was created to provide funding for flood mitigation projects. The purpose of the FIF, as outlined in Senate Bill 7 is to assist in financing drainage, flood mitigation, and flood control projects. FIF projects and studies presented for consideration have been scored and ranked using prioritization criteria outlined in 31 Texas Administrative Code § 363.404 and further specified in the Flood Intended Use Plan. The prioritized list of projects and studies was approved by the Board on September 17, 2020.

KEY ISSUES The selected studies represent those eligible under Category 1, Flood Protection Planning for Watersheds, of the 2020 Flood Intended Use Plan. This category of funding was designed to support studies that conduct planning of entire watersheds no smaller than Hydrologic Unit Code 10-digit (HUC-10) to better inform the development of strategies using structural and nonstructural measures before a flood event, such as determining and describing problems from or related to flooding, identifying and planning solutions to flooding problems, and estimating the benefits and costs of these solutions. Category 1 studies are eligible to receive a maximum of 100 percent grant funds based on criteria outlined in the Flood Intended Use Plan. Recipients of financial assistance may either use their own funds or borrow FIF funds at 0 percent interest for any portion of the remaining project cost.

The 17 applicants listed in Table 1 have submitted complete financial assistance applications and are eligible to receive grant funding through the FIF for a portion of their total project cost. Applicants have pledged to contribute local funds to provide the remaining project costs and federal funds have been identified as a source by one of the applicants. Table 1 provides a summary of funding sources for these 17 studies, and application summaries are attached. COMMITMENT PERIOD: SIX (6) MONTHS TO EXPIRE JUNE 30, 2021

Table 1 - Summary of funding sources Local In- Federal Local Applicant Eligible Kind FIF grant Total funding contribution name grant contribution amount project cost amount amount amount Austin 50% $1,200,000 $ 3,882,073 $ 572,102 $4,445,825 $10,100,000 Caldwell 75% $ - $ 243,750 $ - $ 731,250 $ 975,000 County Cameron County 90% $ - $ 165,000 $ - $ 1,485,000 $ 1,650,000 Drainage District No. 3 Chambers 75% $ - $ 1,552,000 $ - $ 4,656,000 $ 6,208,000 County Dallas 75% $ - $ 1,811,000 $ - $ 5,433,750 $ 7,244,750 County Harlingen 90% $ - $ 323,700 $ 300,000 $ 5,613,300 $ 6,237,000 Hays County 50% $ - $ 215,000 $ - $ 215,000 $ 430,000 Iowa Colony 50% $ - $ 150,000 $ - $ 150,000 $ 300,000 Jackson County County-Wide 75% $ - $ 125,000 $ - $ 375,000 $ 500,000 Drainage District Jefferson County 75% $ - $ 1,875,000 $ 250,000 $ 6,375,000 $ 8,500,000 Drainage District No. 6 Karnes 75% $ - $ 206,250 $ - $ 618,750 $ 825,000 County Laredo 90% $ - $ 65,000 $ - $ 585,000 $ 650,000 Lower Rio Grande Valley 90% $ - $ 887,000 $ - $7,983,000 $ 8,870,000 Development Council Midland 50% $ - $ 612,478 $ - $ 612,478 $ 1,224,956 County Stephenville 75% $ - $ 112,500 $ - $ 337,500 $ 450,000 Wharton 75% $ - $ 142,500 $ - $ 427,500 $ 570,000 County Williamson 75% $ - $ 4,649,593 $ - $4,649,592 $ 9,299,185 County Total $1,200,000 $17,017,844 $1,122,102 $44,693,945 $64,033,891

2 The studies recommended for approval meet all applicable minimum requirements found in the 2020 Flood Intended Use Plan: (1) all activities are considered “flood control planning” as defined in Texas Water Code § 15.405; (2) the application does not include the actual preparation of a Federal Emergency Management Agency Flood Insurance Rate Map; (3) the funding request does not include redundant funding; (4) the area to be served by the project meets the requirements of the Flood Intended Use Plan related to the National Flood Insurance Program; (5) the project was developed using the best/most recent available data; (6) the application demonstrates a sufficient level of cooperation among eligible political subdivisions and includes all of the eligible political subdivisions substantially affected by the project.

The selected studies recommended for approval meet the statutory and rule requirements found in Texas Water Code Chapter 15, Subchapter F and 31 Texas Administrative Code Chapter 355, including: (1) that the financial assistance is necessary for the applicants to carry out adequate flood control planning; and (2) that the applicant has notified all required entities of the application.

Attachment: Application Summaries with Maps

CITY OF AUSTIN

PROJECT NAME AND NUMBER Central Texas Regional Floodplain Studies, Project 40060

PROJECT NEED AND DESCRIPTION The Central Texas Regional Floodplain Studies Project is a key component of a larger program to update hydrologic and hydraulic models for all “regulatory floodplains” within the City of Austin’s (City) jurisdiction and extending into neighboring jurisdictions at a watershed scale. Specifically, up-to date floodplain studies are essential for continued effective floodplain management by the City and surrounding communities in light of the 25-30 percent increase in the benchmark 100-year 24-hour rainfall depth identified in the National Oceanic Atmospheric Administration (NOAA) Atlas 14 report. Up-to-date models are also needed to accurately assess flood risk, plan flood risk reduction projects, and evaluate the level of flood protection provided by existing flood risk reduction projects and drainage systems.

The City of Austin is requesting financial assistance to update regulatory floodplains within the City’s jurisdiction, including those that extend into neighboring jurisdictions. Key elements of the project are: • Develop new or updated geo-referenced hydrologic and hydraulic models for more than 26 watersheds for both existing and fully developed land use conditions for selected storm frequencies based on NOAA Atlas 14precipitation estimates; • Indicate flood risk by mapping the 100-yr and 500-yr floodplains for existing land use conditions and the 25-yr and 100-yr floodplains for fully developed land-use conditions; • Develop selected flood risk products to support the evaluation and communication of flood risk; and • Produce all hydrologic, hydraulic, mapping, and flood risk data in a manner to support submission to the Federal Emergency Management Agency (FEMA) to conduct a Physical Map Revision.

PROPOSED PROJECT FUNDING TOTAL STUDY COST $ 10,100,000 Amount requested from FIF $ 4,445,825 Local Contribution $ 3,882,073 Local in-kind $ 572,102 Federal funding $ 1,200,000

PROJECT SCHEDULE Task Schedule Date Closing March 31, 2021 Flood Planning Study Completion October 1, 2022 (End of Planning Phase)

4 FINANCIAL The funding being provided by the TWDB is in the form of 100 percent grant and therefore is not subject to our internal risk score analysis that is applied to loan. For this request, staff reviewed the City’s annual audit and funding application information to assess the entity’s ability to manage existing obligations and business practices. Based on this analysis, staff believes the City has adequate capabilities to manage its obligations.

SPECIAL CONDITIONS • Prior to closing, the City shall execute a Grant Agreement in a form and substance acceptable to the Executive Administrator; • Prior to closing, the City must demonstrate its required local share of $4,454,175 which may be provided through in-kind services with prior approval by the Executive Administrator; • Prior to closing, when any portion of financial assistance is to be held in escrow or in trust, the City shall execute an escrow agreement or trust agreement, approved as to form and substance by the Executive Administrator, and shall submit that executed agreement to the TWDB; and • Prior to closing, the City must submit documentation evidencing that the area to be served by the Project has floodplain ordinances or orders, as applicable, in place, in accordance with the Flood Intended Use Plan (FIUP) or must include in the scope of work that the applicant will work with any community within the project area, that does not meet minimum standard, towards adoption and enforcement of floodplain management ordinances or orders, as applicable, in accordance with the FIUP.

5 City of Austin Travis County

Granger ! Oatmeal ! Lake Georgetown Granger Lake Liberty Hill !

Georgetown BURNET !

WILLIAMSON

Taylor ! ¤£79

Round Rock Lake Travis ! Lago Vista !

Pflugerville !

BLANCO ¤£183

Lake Austin Elgin 35 Lake 290 ! ¨¦§ !Manor ¤£ Walter E Long Bee Cave ! TRAVIS UV130 Austin ! er Riv Color ado

Dripping 290 Springs ¤£ !

Elroy !

Creedmoor Cedar Creek ! ! HAYS BASTROP

Mendoza Wimberley ! ! Kyle ! CALDWELL

10 Dale ° ! COMAL Miles

CALDWELL COUNTY

PROJECT NAME Caldwell County Flood Protection Planning, Project 40012

PROJECT NEED AND DESCRIPTION Caldwell County (County) has been subject to extreme flooding including catastrophic events in October 1998, November 2011, October 2013, May 2014, multiple events in 2015 and 2016, and August 2017 (Hurricane Harvey). Further study and analysis are needed to identify the extent of flood risk to residential and commercial structures, property flooding, and roadway overtopping due to inadequate drainage infrastructure.

The County is requesting financial assistance to conduct a regional flood planning study. The proposed Caldwell County Flood Protection Planning Study will achieve the following goals: • Develop and/or update floodplain models and maps for high priority streams within the County based on best available data; • Identify flood problem areas and roadway crossings; • Develop structural and non-structural flood mitigation alternatives, including, but not limited to: channel improvements, regional detention facilities, bridge/culvert crossing upgrades, levees, flood early warning systems, implementation of higher standards for floodplain management; • Evaluate and prioritize flood mitigation alternatives based on benefit-cost analyses and other factors (i.e., flood severity index); • Develop a flood mitigation implementation and phasing plan; and • Improve flood early warning system and emergency response planning.

All hydrologic and hydraulic analyses will be performed using best available data including NOAA Atlas 14 precipitation estimates , 2018 and 2011 StratMap LiDAR, and will build upon and compliment ongoing and previous modeling efforts by the TWDB Cooperating Technical Partners (CTP) Program, FEMA Region VI, Guadalupe-Blanco River Authority (GBRA), and other studies. The proposed study area includes more than 500 square miles and 320 stream miles across the Plum Creek, Lower & Upper San Marcos River, and Walnut-Cedar Creek HUC-10s. Caldwell County will serve as the primary project sponsor with potential participation from the cities of Lockhart, Martindale, Mustang Ridge, and Uhland, as well as GBRA.

7 PROPOSED PROJECT FUNDING TOTAL STUDY COST $975,000 Amount requested from FIF $731,250 Local Contribution $243,750 Local in-kind $0 Federal funding $0

PROJECT SCHEDULE Task Schedule Date Closing March 31, 2021 Flood Planning Study Completion August 25, 2022 (End of Planning Phase)

FINANCIAL The funding being provided by the TWDB is in the form of 100 percent grant and therefore is not subject to our internal risk score analysis that is applied to loan. For this request, staff reviewed the County’s annual audit and funding application information to assess the entity’s ability to manage existing obligations and business practices. Based on this analysis, staff believes the County has adequate capabilities to manage its obligations.

8 Caldwell! County

! ! ! ! ! ! ! Bluff Springs Lake Bastrop Manchaca! ! San Leanna 71 Hays UV UV95 ! 183 Elroy Colo ¤£ ! r Carl a d ! o

Bastrop !R i v

TRAVIS e r UV71 !Creedmoor Cedar Creek Buda 45 ! ! UV ! Mustang Ridge 35 ! ! §¨¦ UV21 ! Mountain City Goforth ! Lytton Niederwald BASTROP HAYS ! Mendoza Springs ! ! Rockne Kyle ! !

Uhland Red Rock ! Bateman ! !

Dale Rosanky ! !

String ! Lockhart Prairie ! Reedville Maxwell ! ! ! ! UV142

130 McMahan UV ! 304 Martindale UV ! CALDWELL

Redwood ! ! Tilmon ¤£183 ! Staples ! FAYETTE UV80

! ! Fentress Prairie Lea ! Stairtown ! Thompsonville ! Waelder !

!Luling Harwood ! ! GUADALUPE £90 ! Kingsbury §¨¦10 ¤ GONZALES 80 UV Ottine ! UV97 ¤£183 10 ! ¤£90 ° Miles

! ! 9 CAMERON COUNTY DRAINAGE DISTRICT NO. 3

PROJECT NAME Flood Protection Study, Project 40023

PROJECT NEED AND DESCRIPTION Recent and historic flood events have plagued this region of the State with extensive flood damage and losses. The combination of climate, population explosion, and extremely flat terrain have created the “perfect storm” of variables resulting in extreme and chronic flood damages. Recent major flood events include Hurricane Dolly in 2008 and the June 2019 Rain Bomb, resulting in extensive flood damage and frustration to the local community. Past studies have attempted to quantify flood risk and identify flood reduction solutions, but have fallen short, primarily due to the limitations in the modeling technology. Recent advancements in computing speed, coupled with the release of publicly available 2D modeling platforms, have created a very exciting opportunity for this flood prone region of the State. Recent 2D modeling studies for neighboring Cameron County Drainage District #5 (also funded by the TWDB) have proven that 2D modeling is essential and critically needed to develop realistic and sustainable flood reduction solutions in this region.

Cameron County Drainage District No. 3 (District) is requesting financial assistance to conduct a complete restudy of the District’s jurisdiction and surrounding area. This new study will include new hydrologic and hydraulic modeling of the entire drainage district boundary, including all of the district drainage ditches, as well as all the other municipality drainage ditches that lay within the overall drainage district boundary. The goal of this project is to evaluate flood risk for the entire study area using more robust unsteady and 2- dimensional hydraulic modeling (where needed) coupled with a refined hydrologic analysis with defined sub-watersheds. This project will include a study of 320 linear miles of channel, topographic field survey of 1 channel section per stream mile, and field survey of 451 bridge/culvert crossings. This project will result in a new hydrologic and hydraulic model, an alternative analysis to identify structural and non-structural flood control projects, a benefit-cost analysis for each alternative evaluated, three (3) public meetings, three (3) stakeholder meetings, and a final engineering report documenting the analysis performed and recommendations made. This project will also include an effort to assist with identifying and improving upon regional real-time flood warning measures that could be implemented in the future, and also assist with identifying potential future funding sources for construction of identified flood reduction and improved channel conveyance projects. A bulleted list of project elements/components is provided below:

• New hydrologic model using NOAA Atlas 14 precipitation estimates; • New unsteady 1D/2D hydraulic model of study streams; • New field survey (where needed); • Flood reduction alternative analysis; • Benefit-cost analysis; • Environmental constraints investigation; • Consideration of “Green Infrastructure” and “Water Supply” related alternatives; and • Public outreach to gain input on known flood risks throughout HUC-10 boundary

PROPOSED PROJECT FUNDING TOTAL STUDY COST $1,650,000 Amount requested from FIF $1,485,000 Local Contribution $165,000 Local in-kind $0 Federal funding $0

PROJECT SCHEDULE Task Schedule Date Closing March 31, 2021 Flood Planning Study Completion May 20, 2022 (End of Planning Phase)

FINANCIAL The funding being provided by the TWDB is in the form of 100 percent grant and therefore is not subject to our internal risk score analysis that is applied to loan. For this request, staff reviewed the District’s annual audit and funding application information to assess the entity’s ability to manage existing obligations and business practices. Based on this analysis, staff believes the District has adequate capabilities to manage its obligations.

SPECIAL CONDITIONS • Prior to closing, the District shall execute a Grant Agreement in a form and substance acceptable to the Executive Administrator; • Prior to closing, the District must demonstrate its required local share of $165,000, which may be provided through in-kind services with prior approval by the Executive Administrator; • Prior to closing, when any portion of financial assistance is to be held in escrow or in trust, the District shall execute an escrow agreement or trust agreement, approved as to form and substance by the Executive Administrator, and shall submit that executed agreement to the TWDB; and • The District must notify the Executive Administrator in writing thirty (30) days prior to taking any actions to alter its legal status in any manner.

11 Cameron County Drainage District #3 Cameron County

Raymondville ! UV186

UV56 HIDALGO WILLACY UV112

Santa Monica ! UV413

UV107 Rio Hondo Valley ! Acres ¨¦§69E Reservoir UV499 UV54 ! UV206 CAMERON Gulf §¨¦2 UV345 of Mexico !La Feria 486 UV Bayview ! Cameron County Port Isabel Drainage District #3 ! UV100 ¤£281

Loma Alta UV550 Lake UV48 e R and UV4 io Gr

Brownsville MEXICO ! UV425

° Miles

CHAMBERS COUNTY

PROJECT NAME Flood Protection Planning for Watersheds – Chambers County and City of Mont Belvieu, Project 40018

PROJECT NEED AND DESCRIPTION Chambers and Liberty Counties have experienced severe flooding numerous times within the last 5 years. This flooding is attributed to several storms, most notably Hurricane Harvey in 2017 and Tropical Storm Imelda in 2019. These flooding events resulted in the loss of life, damage to property, and left major roadways impassible for extended periods of time. These extreme storms have emphasized the need to implement detailed planning for flood protection in this area. Most of the open channels within Chambers and Liberty Counties do not have effective detailed hydrologic and hydraulic models. The publication of NOAA Atlas 14 in October of 2018 and the resultant change in our understanding of extreme rainfall events has prompted the need for comprehensive floodplain modeling and mapping. The update of floodplain models is an essential component in efforts to better understand current flood risks and will aid in planning for regional projects that manage and control flood waters in order to reduce, or potentially eliminate, flood losses within the community served. This project represents a collaborative regional effort initiated between Chambers County and the City of Mont Belvieu and has included communications with Trinity Bay Conservation District, the City of Liberty, and Liberty County Water Control and Improvement District No. 5.

Chambers County is requesting financial assistance to conduct a regional flood protection planning study. This proposed study includes use of the best and most current data with regard to cumulative changes in land cover and land use (development), updated NOAA Atlas 14 precipitation estimates, updated topographic data (LiDAR), limited topographic survey and stream cross-sectional data, and application of new technology to develop more accurate floodplain modeling and mapping. The study will include limited modeling of existing trunk storm sewers serving the more urbanized areas to identify structural and roadway flood risks. Collected data will be used to establish the existing flood risks along the studied streams and develop and distribute information vital to communities within the study area. Materials to be developed will include inundation maps for the studied streams showing the extent and depth of flooding for the various storm events to be evaluated. Number of structures, miles of roadway, and acres of land that are inundated will also be summarized.

Once the existing flood risk is determined, flood mitigation measures to abate flood risks will be identified and evaluated. These flood mitigation strategies may include channel improvements to increase conveyance, flood control structures to attenuate flood waters, or levees to protect developed areas. Flood mitigation strategy alternatives will be evaluated, and a plan formulated for the study area to maximize benefits and identify projects for further development and implementation.

PROPOSED PROJECT FUNDING TOTAL STUDY COST $6,208,000 Amount requested from FIF $4,656,000 Local Contribution $1,552,000 Local in-kind $0 Federal funding $0

PROJECT SCHEDULE Task Schedule Date Closing March 31, 2021 Flood Planning Study Completion March 31, 2024 (End of Planning Phase)

FINANCIAL The funding being provided by the TWDB is in the form of 100 percent grant and therefore is not subject to our internal risk score analysis that is applied to loan. For this request, staff reviewed the Chambers County’s annual audit and funding application information to assess the entity’s ability to manage existing obligations and business practices. Based on this analysis, staff believes the County has adequate capabilities to manage its obligations.

14 Chambers County

! ! ! ! ! ! Dayton Raywood Devers !Nome ! ! ¤£90

! ¤£90 LIBERTY

Moss Bluff ! UV99 ! Wallisville ! Lake JEFFERSON

! Old ! r 61 e UV River-Winfree v ! ! i R Hankamer ! ! y t ! i 207 in Eminence UV r ! ! T Wallisville §¨¦10 UV124 Cove ! Turtle Bayou 73 ! ! Winnie !UV McNair ! Cedar Bayou Stowell Generating Four Corners ! ! Pond ! ! UV65 HARRIS Cedar Bayou Anahuac Monroe City ! ! ! UV330 Lake Anahuac UV146 UV99 ! Baytown UV99 ! Morgan's CHAMBERS 225 Double Bayou UV Point ! 124 ! UV La Porte Beach City ! ! Oak Island !

501 UV! Shoreacres

! High Island El Lago ! ! ! 87 Seabrook UV ! ! ! Kemah Smith Point ! Clear ! Lake Shores Gilchrist Bacliff ! ! UV96 ! San Leon Caplen UV99 ! ! Gulf Coast 87 Crystal Beach UV ! Water Authority ! Gulf of Mexico Reservoir GALVESTON

UV3 197 UV108 La Marque UV! ! Texas City 108! 10 ! §¨¦45 UVPort Bolivar ° Miles UV6! UV87 !

! ! 15

DALLAS COUNTY

PROJECT NAME Dallas County Inland Port Flood Protection Planning Study, Project 40118

PROJECT NEED AND DESCRIPTION The southern sector of Dallas County has experienced significant flooding during recent rain events. The publication of NOAA Atlas 14 in October of 2018, and the resultant change in our understanding of the impact of extreme rainfall events, has prompted the need for comprehensive floodplain modeling and mapping in order to develop more effective flood management strategies for the area. The update of the floodplain maps is an important part of the County’s efforts to ensure that new development is done in a manner that minimizes flood risk damage and protects lives. The rapid pace of land development and redevelopment in many urban and suburban watersheds is also a driving factor in the need to update the County’s floodplain information. Such changes include (1) the cumulative changes due to land development, (2) the availability of more accurate rainfall data, (3) the availability of more accurate topographic data Dallas County Inland Port HUC-10 Flood Protection Planning Study and surveyed cross section data, and (4) the availability of new technology for more accurate floodplain modeling and mapping.

Dallas County is requesting financial assistance to evaluate the entire Inland Port HUC-10 area which includes several member cities and the County of Dallas. The major streams in the project area will be analyzed using HEC runs to determine flood elevations along the system. The major crossings (bridges and culverts) of the major tributaries will be analyzed. These evaluations will be used as the starting downstream elevations for the Inland Port sub basin. Major trunk line 24” diameter and larger, will be analyzed using a drainage modeling software. By incorporating the entire HUC-10 area, the systems in their entirety, and how the interactions of each of the separate systems act on the whole drainage area, can be evaluated. This will provide an accurate analysis of the systems and will determine the parts of the system that are undersized. As part of the analysis completed for this contract, the team will evaluate each of the elements determined to flood during the 100-yr storm event and will categorize and prioritize the systems affected.

PROPOSED PROJECT FUNDING TOTAL STUDY COST $7,244,750 Amount requested from FIF $5,433,750 Local Contribution $1,811,000 Local in-kind $0 Federal funding $0

PROJECT SCHEDULE Task Schedule Date Closing March 31, 2021 Flood Planning Study Completion March 31, 2024 (End of Planning Phase)

16 FINANCIAL The funding being provided by the TWDB is in the form of 100 percent grant and therefore is not subject to our internal risk score analysis that is applied to loan. For this request, staff reviewed the County’s annual audit and funding application information to assess the entity’s ability to manage existing obligations and business practices. Based on this analysis, staff believes the County has adequate capabilities to manage its obligations.

SPECIAL CONDITIONS • Prior to closing, the County shall execute a Grant Agreement in a form and substance acceptable to the Executive Administrator; • Prior to closing, the County must demonstrate its required local share of $1,811,000, which may be provided through in-kind services with prior approval by the Executive Administrator; • Prior to closing, when any portion of financial assistance is to be held in escrow or in trust, the County shall execute an escrow agreement or trust agreement, approved as to form and substance by the Executive Administrator, and shall submit that executed agreement to the TWDB; and • Prior to closing, the County must submit documentation evidencing that the area to be served by the Project has floodplain ordinances or orders, as applicable, in place, in accordance with the Flood Intended Use Plan (FIUP) or must include in the scope of work that the applicant will work with any community within the project area, that does not meet minimum standard, towards adoption and enforcement of floodplain management ordinances or orders, as applicable, in accordance with the FIUP.

17 Dallas County ! ! ! ! ! ! ! ! ! ! ! ! ! Lewisville Parker Lewisville ! ! Lake Flower Mound Saint Paul ! ! ! DENTON COLLIN Pecan Grove Hebron Lavon Lake ! ! Plano ! ! Murphy Wylie Lake Ray ! ! Hubbard Grapevine Lake Sachse ! Addison Coppell ! ! Carrollton ! North Lake ! Richardson Grapevine ! ! ! Farmers ¤£75 Rockwall Branch ! ! ! 635 Garland ¨¦§ ! Rowlett ! ROCKWALL ! University White Park Euless 35E ! Rock Lake ! ! ! ¨¦§ Heath Highland Park ! ! Irving ! Tr inity R iv er 345 §¨¦30 TARRANT ! ¨¦§ ¤£80 !Sunnyvale Dallas Mesquite ! Forney Mountain DALLAS ! Grand Prairie! Cockrell Hill ! Creek Lake ! Balch Springs Arlington ! !

! ¤£175 !

Duncanville ! Hutchins Joe Pool Lake 20 ! §¨¦ Sand Branch ! ! KAUFMAN Seagoville Crandall! §¨¦45

Cedar Lancaster DeSoto ! Wilmer Combine ! Hill !¤£67 ! ! Glenn Heights ! ! Britton ! Ferris Ovilla ! India ! ! ! Red Oak ! Oak Leaf !

ELLIS Trumbull ! 287 Midlothian ! Pecan Hill 10 ¤£ ! JOHNSON ¤£77 Rockett ! ° Miles Bristol Rosser ! ! !

! !

! 18 ! ! ! !

CITY OF HARLINGEN

PROJECT NAME Harlingen HUC 10 Flood Protection Planning Study, Project 40041

PROJECT NEED AND DESCRIPTION The City of Harlingen (City) is located in the Lower Rio Grande Valley area of South Texas which has experienced five presidentially-declared flood events including FEMA disaster declarations since 2015. National Floodplain Insurance Program building and property claims for the 2019 disaster declaration totaled $18.7 million in the City alone. The annual occurrence of 100-to-500 year events demonstrates a definite need to reassess the City’s approach to flood protection planning. Other unique challenges confronting local jurisdictions include topography, geology, and urban expansion. There is also new data available to form the groundwork for the proposed flood protection planning study.

The City is requesting financial assistance to conduct a regional flood planning study. The proposed study will examine two HUC-10 watersheds as delineated by the U.S. Geological Survey. This area encompasses over 295 square miles of terrain, 49 centerline miles of the Arroyo Colorado, and over 740 additional centerline miles of existing drainage channels, ditches, irrigation canals, and other appurtenances. Study would incorporate most recent data such as 2018 South Texas LiDAR dataset, NOAA Atlas 14 precipitation estimates, 2018 FEMA flood insurance study, and TWDB base level engineering data.

PROPOSED PROJECT FUNDING TOTAL STUDY COST $6,237,000 Amount requested from FIF $5,613,300 Local Contribution $323,700 Local in-kind $300,000 Federal funding $0

PROJECT SCHEDULE Task Schedule Date Closing March 31, 2021 Flood Planning Study Completion September 31, 2022 (End of Planning Phase)

FINANCIAL The funding being provided by the TWDB is in the form of 100 percent grant and therefore is not subject to our internal risk score analysis that is applied to loan. For this request, staff reviewed the City’s annual audit and funding application information to assess the entity’s ability to manage existing obligations and business practices. Based on this analysis, staff believes the City has adequate capabilities to manage its obligations.

20 City of Harlingen Cameron County

Raymondville ! UV186

UV56 HIDALGO WILLACY UV112

Santa Monica ! UV413

UV107 Valley Acres ¨¦§69E Reservoir UV206!! Harlingen 2 UV499 §¨¦ UV345 !La Feria 486 UV Bayview !

CAMERON LagunaMadre Port Isabel ! UV100 ¤£281

Loma Alta UV550 Lake UV48 e R and UV4 io Gr

MEXICO UV425

° Miles

HAYS COUNTY

PROJECT NAME Onion Creek Watershed Study: Floodplain and Mapping, Project 40077

PROJECT NEED AND DESCRIPTION The Onion Creek Watershed study is part of the Hays County comprehensive effort to update floodplain modeling and mapping in consideration of the new NOAA Atlas 14 precipitation estimates. As the City of Austin and Travis County are currently conducting a hydrologic and hydraulic study of the Onion Creek Watershed, there will be a regionally benefit to complete an update for the portion of the watershed within Hays County. The intention is to utilize this study to help improve the regional data and knowledge of the Onion Creek Watershed in order to best serve and protect the citizens.

Hays County (County) is requesting financial assistance to conduct a regional flood planning study. The proposed study scope of work would include project management for procured consultant as well as coordination with the County and other participating stakeholders, data collection and hydrology, hydraulic analysis and mapping, conceptual flood mitigation analysis, QA/QC, and preparation of final flood protection planning report.

PROPOSED PROJECT FUNDING TOTAL STUDY COST $430,000 Amount requested from FIF $215,000 Local Contribution $215,000 Local in-kind $0 Federal funding $0

PROJECT SCHEDULE Task Schedule Date Closing March 31, 2021 Flood Planning Study Completion October 1, 2021 (End of Planning Phase)

23 ! Hays County

! ! ! ! ! ! ! Lake Travis 275 ! UV Lakeway Lake Austin ! 183 Village of ¤£ The Hills 69 290 Bee Cave UV ¤£ UV71 ! UV360 TRAVIS West Lake ! Hills Rollingwood Austin ! ! 343 165 UV1 UV UV 111 Fitzhugh Circleville UV ! ! Oak Hill UV343 BLANCO ! ! Sunset Valley ! Dripping UV71 Henly Springs ! ! 290 ¤£ Bear Creek 275 ! 45 UV ¤£183 UV Ford Oaks ! Bluff Springs Pilot Knob ! ! ! Mount Gainor Manchaca! ! ! San Leanna Driftwood Hays ! ! Carl ! !

Buda 45 !Creedmoor ! UV

HAYS Mustang Ridge ! ! Hays City ! 35 Woodcreek Mountain City §¨¦ Goforth ! ! Niederwald ! Mendoza Wimberley ! ! ! Kyle ! Fischer ! Uhland ! UV21 Canyon Lake ¤£183 80 82 UV ! UV Reedville Maxwell Lockhart ! Canyon City ! ! ! San Marcos UV142 CALDWELL Sattler Startzville ! 130 ! COMAL Martindale UV ! ! Canyon Lake 80 Redwood UV Hunter ! ! UV123 Staples GUADALUPE ! UV46 10 Zorn Fentress ! ! ° Miles Prairie Lea !

! ! !

CITY OF IOWA COLONY

PROJECT NAME Iowa Colony Master Drainage Plan, Project 40016

PROJECT NEED AND DESCRIPTION The City of Iowa Colony (City) is a small community located in northern Brazoria County. Historically, the City has remained rural until recent years where the City has experienced significant growth with multiple master planned subdivision developments within the City limits and ETJ. With increase in growth, the City is in need to develop a comprehensive Master Drainage Plan (MDP). The purpose and goal of the MDP is to conduct a comprehensive evaluation of the existing drainage conditions throughout the City and to develop an accurate and current understanding of the drainage infrastructure and planning for the future.

The City is requesting financial assistance to master drainage plan. The proposed MDP will provide a comprehensive evaluation of the existing drainage conditions throughout the City and to develop an accurate and current understanding of the drainage infrastructure. The assessment will include an inventory of the existing data, hydrologic and hydraulics watershed model, flooding problem area identification, and flood mitigation solutions. A drainage Capital Improvement Plan, including costs will be developed to address flooding infrastructure. The MDP will incorporate recently released precipitation estimates from NOAA Atlas 14 for impacted design rainfall depths. In addition, the study will allow the City to evaluate the need to update the Engineering Design Criteria Manual and Floodplain Damage Prevention Ordinance.

PROPOSED PROJECT FUNDING TOTAL STUDY COST $300,000 Amount requested from FIF $150,000 Local Contribution $150,000 Local in-kind $0 Federal funding $0

PROJECT SCHEDULE Task Schedule Date Closing March 31, 2021 Flood Planning Study Completion February 7, 2022 (End of Planning Phase)

FINANCIAL The funding being provided by the TWDB is in the form of 100 percent grant and therefore is not subject to our internal risk score analysis that is applied to loan. For this request, staff reviewed the City’s annual audit and funding application information to assess the entity’s ability to manage existing obligations and business practices. Based on this analysis, staff believes the City has adequate capabilities to manage its obligations.

SPECIAL CONDITIONS • Prior to closing, the City shall execute a Grant Agreement in a form and substance acceptable to the Executive Administrator; 25 • Prior to closing, the City must demonstrate its required local share of $150,000 which may be provided through in-kind services with prior approval by the Executive Administrator; and • Prior to closing, when any portion of financial assistance is to be held in escrow or in trust, the City shall execute an escrow agreement or trust agreement, approved as to form and substance by the Executive Administrator, and shall submit that executed agreement to the TWDB.

26 City of Iowa Colony Brazoria County

CHAMBERS Almeda ! Richmond 69 ! §¨¦ HARRIS Rosenberg ! CHAMBERS UV529 UV!3 Smithers Lake UV6 UV540 UV10 UV96 FORT BEND Manvel ! Dickinson !

UV273 Needville ! ! Iowa Colony UV99 GALVESTON

Mustang Lake UV288 East/Mustang Liverpool Lake West ! William Harris WHARTON Eagle Nest Reservoir Lake / Manor Lake UV28

UV36 BRAZORIA 274! West Columbia UV !

Brazoria Reservoir UV419 Brazoria 332 ! UV Lake Jackson r ! B az Van Vleck os Clute ! R ! i ver

MATAGORDA

Sargent ! 10

° Miles

JACKSON COUNTY COUNTY-WIDE DRAINAGE DISTRICT

PROJECT NAME Keller Branch – Lavaca River Basin Flood Protection Study Option 2, Project 40015

PROJECT NEED AND DESCRIPTION The Lavaca River and its major tributary Dry Creek that drains the Town of Edna and other developed portions of Jackson County both with a long history of flooding and flood losses as recent as 2020. Hurricane Harvey's extreme rainfall event caused a major flood at the confluence with the Navidad River. The circa 1984 FEMA study is of poor quality and is outdated and does not reflect channel degradation, erosion and other channel effects that the drainage district needs to understand the hydrology.

The Jackson County County-Wide Drainage District (District) is requesting financial assistance to evaluate the entire Dry Creek watershed and a portion of the Lavaca River in Jackson County. The flood planning study will include development of new hydrologic and hydraulic models, field studies, flood reduction alternative analysis, cost benefit analysis, environmental constraints investigation, and public outreach.

PROPOSED PROJECT FUNDING TOTAL STUDY COST $500,000 Amount requested from FIF $375,000 Local Contribution $125,000 Local in-kind $0 Federal funding $0

PROJECT SCHEDULE Task Schedule Date Closing March 31, 2021 Flood Planning Study Completion May 20, 2022 (End of Planning Phase)

FINANCIAL The funding being provided by the TWDB is in the form of 100 percent grant and therefore is not subject to our internal risk score analysis that is applied to loan. For this request, staff reviewed the District’s annual audit and funding application information to assess the entity’s ability to manage existing obligations and business practices. Based on this analysis, staff believes the District has adequate capabilities to manage its obligations.

28 as to form and substance by the Executive Administrator, and shall submit that executed agreement to the TWDB; and • The District must notify the Executive Administrator in writing thirty (30) days prior to taking any actions to alter its legal status in any manner.

29 ! ! Jackson County County-Wide Drainage District

! ! Jones Creek Ezzell ! ! COLORADO Speaks ! UV71

LAVACA

WHARTON

Hillje ! La va Cordele UV524 ca Morales ! R ! iv e r 523 !UV Louise Jackson County County-Wide Drainage District

!Ganado UV111 UV522

Lake Texana ¤£59 ! Edna UV521 El Toro Crossroads ! JACKSON !

Inez ! Red Bluff ! ! UV172 Francitas Telferner ! ! Lolita La Ward ! ! UV463 Vanderbilt !

! VICTORIA La Salle ! MATAGORDA

Guadalupe ! Cox Lake / Raw Crescent Weedhaven Dacosta Water Lake / ! Valley ! ! Recycle Lake ¤£87 UV35 Placedo ! UV185 ! Sixmile ! Point Comfort !

CALHOUN ! Port Alto Bloomington 10 UV159 ! Kamey ° !Olivia ! Miles

! 30

JEFFERSON COUNTY DRAINAGE DISTRICT No. 6

PROJECT NAME Regional Watershed Plan, Project 40034

PROJECT NEED AND DESCRIPTION Jefferson County and contributing watersheds have experienced some of the most extreme rainfall and flooding events in the history of the US including six events in excess of the defined 100-year event over the previous 20 years. Jefferson County Drainage District No. 6’s (District) responsibility to implement flood mitigation is based on drainage studies of two of the three primary watersheds that drain the District, Taylor and Hillebrandt Bayous. These studies are 20 years old and there is a need to update and expand the watershed masterplans in response to changes in NOAA Atlas 14 precipitation estimates, identify effective and cost-efficient projects and improve the region.

The District is requesting financial assistance to conduct a regional flood planning study. The proposed study will update previous studies for Taylor and Hillebrandt Bayous and will develop a new study for Pine Island watershed. Pine Island has been the source of flooding from Polk to Jefferson Counties encompassing more than 700 square miles and has never had a comprehensive study to show its regional impact. Studies will develop new existing conditions models using HEC-RAS coupled with 1D/2D models and the most current and accurate data (2018 LiDAR). The models will include all bridge and culvert crossings calibrated to recent events, will account for inter-basin transfer between watersheds particularly the overflow from the three bayous and the Trinity River. Improvement options will be developed that address structural flooding including diversions, regional detention, channelization, buyouts, home elevations, and ring levees. Identified projects will be included in a detailed prioritization matrix that accounts for important factors including a benefit to cost ratio, and social and economic impacts.

PROPOSED PROJECT FUNDING TOTAL STUDY COST $8,500,000 Amount requested from FIF $6,375,000 Local Contribution $1,875,000 Local in-kind $250,000 Federal funding $0

PROJECT SCHEDULE Task Schedule Date Closing March 31, 2021 Flood Planning Study Completion October 14, 2022 (End of Planning Phase)

FINANCIAL The funding being provided by the TWDB is in the form of 100 percent grant and therefore is not subject to our internal risk score analysis that is applied to loan. For this request, staff reviewed the District’s annual audit and funding application information to assess the entity’s ability to manage existing obligations and business practices. Based on this analysis, staff believes the District has adequate capabilities to manage its obligations.

SPECIAL CONDITIONS • Prior to closing, the District shall execute a Grant Agreement in a form and substance acceptable to the Executive Administrator; • Prior to closing, the District must demonstrate its required local share of $2,125,000, which may be provided through in-kind services with prior approval by the Executive Administrator; • Prior to closing, when any portion of financial assistance is to be held in escrow or in trust, the District shall execute an escrow agreement or trust agreement, approved as to form and substance by the Executive Administrator, and shall submit that executed agreement to the TWDB; and • The District must notify the Executive Administrator in writing thirty (30) days prior to taking any actions to alter its legal status in any manner.

Jefferson County Drainage District Number 6

Pine Forest ! HARDIN

Sour Lake ! ¤£90

ORANGE Meeker Beaumont ! ! Orangefield !

China ! ¤£90 N ech es River r ive e R Jefferson County in Nederland ab Drainage District Number 6 ! S LIBERTY

¤£69 §¨¦10 JEFFERSON Port Arthur ! La Belle ! Hamshire !

Winnie ! Sabine Lake

CHAMBERS

Gulf of Mexico

10 GALVESTON ° Miles

33 KARNES COUNTY

PROJECT NAME Flood Protection Planning Study, Project 40011

PROJECT NEED AND DESCRIPTION From 1996 to 2017 hazard impacts to Karnes County have been due to hurricanes and tropical storms (Beulah, Charley, Claudette, Erin, Harvey) totaling $10 million and affecting 15,000 residents and visitors.

Karnes County (County) is requesting financial assistance to conduct a region flood protection planning study. This study will include tasks to: develop and update floodplain models and maps for high priority streams; identify flood problem area and road crossings; develop structural and non-structural mitigation alternatives like channel improvements, detention facilities, bridge/culvert crossing upgrades, levees, early warning systems and implementation of higher standards for floodplain development; conduct benefit-cost analyses of mitigation alternatives; and improve flood mitigation plan and emergency response planning.

PROPOSED PROJECT FUNDING TOTAL STUDY COST $825,000 Amount requested from FIF $618,750 Local Contribution $206,250 Local in-kind $0 Federal funding $0

PROJECT SCHEDULE Task Schedule Date Closing March 31, 2021 Flood Planning Study Completion August 25, 2022 (End of Planning Phase)

34 ! Karnes County !

! ! Nixon Smiley ! Pandora ¤£87 ! ! Stockdale ! ¤£87

GONZALES 97 ! UV !

UV181 WILSON ! Floresville UV190! Kosciusko 119 UV97 ! UV

123 Poth UV Gruenau ! UV80 ! Pawelekville New Davy ! Ecleto ! ! Garfield ! Dewees ! Cestohowa ! DE WITT

Falls City ! ! Cotton Patch !

Panna Maria Hobson ! Helena ! !

181 ¤£ Nordheim ! Deweesville ! KARNES Runge ! Karnes City !

! Coy City ! Kenedy ! UV72

Fashing ATASCOSA! Choate !

! Peggy 239 Charco ! El Oso UV ! !

Zunkerville ! Esseville ! LIVE OAK GOLIAD BEE Pawnee ! 10 ! ° Miles Pettus !

! 35

CITY OF LAREDO

PROJECT NAME Chacon Creek – Rio Grande Basin Flood Protection Study Option 1, Project 40080

PROJECT NEED AND DESCRIPTION Past studies of the Chacon Creek-Rio Grande Basin were performed over 10 years ago utilizing 1D steady state hydraulic modeling. Over the past decade or more, these watersheds have continued to develop with increased impervious cover and multiple changes to channel alignments and overall channel conveyance, resulting in new flood risk areas and changes to previously identified flood prone areas. Both the City of Laredo (City) and Webb County have taken aggressive measures to implement more robust flood control practices via adopting new floodplain ordinances in 2019, to help curb impacts of future development, but there is an immediate need to reevaluate this existing flood risk using more robust modeling standards are more accurate NOAA Atlas 14 precipitation estimates.

The City is requesting financial assistance to conduct a regional flood planning study with a major focus on the Manadas and Zacate Creek watersheds. The proposed Chacon Creek – Rio Grande Basin Flood Protection Study will include the following tasks: • Revaluation of the entire Manadas and Zacate Creek watersheds; • Study 47 linear miles of channel; • Perform topographic field survey of 1 channel per stream mile; • Perform field survey of approx. 157 bridge/culvert crossings; • New hydrologic model using NOAA Atlas 14 precipitation estimates; • New unsteady 1D/2D hydraulic model of study streams; • An alternative analysis to identify structural and non-structural flood control projects; • A benefit-cost analysis for each alternative evaluated; • Environmental constraints investigation; • Consideration of “Green Infrastructure” and “Water Supply” related alternatives; and • Public outreach to gain input on known flood risks throughout the HUC-10 boundary

PROPOSED PROJECT FUNDING TOTAL STUDY COST $650,000 Amount requested from FIF $585,000 Local Contribution $65,000 Local in-kind $0 Federal funding $0

PROJECT SCHEDULE Task Schedule Date Closing March 31, 2021 Flood Planning Study Completion May 20, 2022 (End of Planning Phase)

FINANCIAL The funding being provided by the TWDB is in the form of 100 percent grant and therefore is not subject to our internal risk score analysis that is applied to loan. For this request, staff reviewed the City’s annual audit and funding application information to assess the entity’s ability to manage existing obligations and business practices. Based on this analysis, staff believes the City has adequate capabilities to manage its obligations.

37 City of Laredo Webb County

Asherton Cotulla ! ! UV97

DIMMIT Catarina MAVERICK ! MCMULLEN Artesia Wells ! LA SALLE

R i o G ran 35 de ¨¦§

Nu eces River ¤£83 Encinal !

UV44

DUVAL

VU255

WEBB ¤£59 Casa MEXICO Blanca ¤£59 Lake ! Aguilares ! VU359 UV20

Rio Bravo !

¤£83

ZAPATA JIM HOGG Randado ! International 16 10 Falcon UV Reservoir ° Miles ! Ramireno

LOWER RIO GRANDE VALLEY DEVELOPMENT COUNCIL

PROJECT NAME Lower Rio Grande Valley Regional Flood Protection Planning, Project 40038

PROJECT NEED AND DESCRIPTION Community leaders in the lower Rio Grande River basin have identified the need for a regional approach to their flood planning strategies and have developed specific goals to address this need. First, a need to assimilate hydrologic and hydraulic knowledge to support science-driven policy and decision making through an established regional coordination and decision-making network; and second, to identify, assess and prioritize local and regional capital improvement projects that would support regional flood management with for implementation through the constituent jurisdictions.

The Lower Rio Grande Valley Development Council (Council) is requesting financial assistance to conduct a regional flood planning study. The Lower Rio Grande Valley Regional Flood Protection Planning study proposes to address flood planning needs though the following tasks: • Contribute to and facilitate regional administrative coordination; • Conduct, coordinate and integrate the results of multiple FIF Category 1 project tiered hydrologic and hydraulic studies for possible future use in FEMA Flood Risk assessments; • Commission a network of real time hydrologic stations within the region’s major drainage network to gather data necessary for hydrologic and hydraulic modeling; • Expand the regional clearinghouse of hydrologic, hydraulic, socio-economic data, along with a database of regional structural and non-structural projects; • Identify local structural and non-structural controls; • Promote the development and adoption of regional drainage policies and flood response and resiliency coordination networks to minimize and mitigate the impact of local flooding; and • Assess the feasibility of capital improvement projects identified along with cost- benefit analyses.

With improved drainage data, collaboration, and capacity, the Lower Rio Grande Valley Regional Flood Protection Planning Project seeks to advance the regions’ resilience and robustness to flooding events.

39 PROPOSED PROJECT FUNDING TOTAL STUDY COST $8,870,000 Amount requested from FIF $7,983,000 Local Contribution $887,000 Local in-kind $0 Federal funding $0

PROJECT SCHEDULE Task Schedule Date Closing March 31, 2021 Flood Planning Study Completion March 31, 2024 (End of Planning Phase)

FINANCIAL The funding being provided by the TWDB is in the form of 100 percent grant and therefore is not subject to our internal risk score analysis that is applied to loan. For this request, staff reviewed the Council’s annual audit and funding application information to assess the entity’s ability to manage existing obligations and business practices. Based on this analysis, staff believes the Council has adequate capabilities to manage its obligations.

SPECIAL CONDITIONS • Prior to closing, the Council shall execute a Grant Agreement in a form and substance acceptable to the Executive Administrator; • Prior to closing, the Council must demonstrate its required local share of $887,000, which may be provided through in-kind services with prior approval by the Executive Administrator; • Prior to closing, when any portion of financial assistance is to be held in escrow or in trust, the Council shall execute an escrow agreement or trust agreement, approved as to form and substance by the Executive Administrator, and shall submit that executed agreement to the TWDB; and • The Council must notify the Executive Administrator in writing thirty (30) days prior to taking any actions to alter its legal status in any manner.

40 Lower Rio Grande Valley Development Council

Armstrong JIM HOGG BROOKS ! ! Rachal Agua Nueva !

KENEDY ¤£77

La Gloria 281 ! ¤£

STARR San Manuel ! Rincon ! Lower Rio Grande Valley Raymondville ! Development Council WILLACY Delta Lake HIDALGO Santa Monica !

Edinburg ! Valley Acres £83 La Joya 69C Reservoir ¤ ! ¦¨§ Pharr Harlingen ! ! §¨¦2 Weslaco ! ¨¦§69E Anzalduas CAMERON Channel Dam ¤£281 Port Isabel d ! R ioG ran e ¤£281 Loma Alta MEXICO Lake

Brownsville !

° Miles

MIDLAND COUNTY

PROJECT NAME Monahans and South Draw Flood Planning, Project 40057

PROJECT NEED AND DESCRIPTION Rapid urban development and population growth in the Cities of Midland and Odessa have increased the need for regional floodplain management. Future flood models are needed to understand how changing development will alter the floodplain and flood risk. In order to mitigate, anticipate and prevent these issues the four entities that regulate development will need a future condition flood model of Monahans and South Draws. This will be the primary deliverable for the proposed study.

Midland County is requesting financial assistance to conduct a regional flood planning study. The proposed project will: • Use existing NFIP hydrology (from 1996 and 1998) as a starting point. • Determine and map playa extents and base flood elevations within developing areas for future land use, making use of existing previous studies in two locations. • Develop hydrologic analyses of riverine portions of the detailed study area as well as a simplified hydrologic analysis of the watershed upstream of it. • Total hydrologic study will be 228 square miles of detailed study and 445 square miles of simplified hydrology. • Convert, update or develop HEC-RAS models of South and Monahans Draws and four unmapped flow paths, for future conditions. • Map future floodplains and floodways for the HEC-RAS models, a total of 55 miles of analysis. • Provide detailed 2D analysis of a portion of eastern Odessa and develop options for interconnecting and draining the most flood-prone playas in a future project. • Coordinate with TxDOT regarding cross-drainage structures and future drainage infrastructure needs within the detailed study area.

The deliverables will be presented as GIS layers containing both hydrologic input, future inundation mapping, future flood elevations and future condition floodways.

PROPOSED PROJECT FUNDING TOTAL STUDY COST $1,224,956 Amount requested from FIF $612,478 Local Contribution $612,478 Local in-kind $0 Federal funding $0

PROJECT SCHEDULE Task Schedule Date Closing March 31, 2021 Flood Planning Study Completion March 31, 2024 (End of Planning Phase)

42 FINANCIAL The funding being provided by the TWDB is in the form of 100 percent grant and therefore is not subject to our internal risk score analysis that is applied to loan. For this request, staff reviewed the County’s annual audit and funding application information to assess the entity’s ability to manage existing obligations and business practices. Based on this analysis, staff believes the County has adequate capabilities to manage its obligations.

43 Midland County

! Stanton

ANDREWS MARTIN Dix !

UV250 UV137 UV349

UV158 Midland ! 140 UV268 UV §¨¦20 UV191

UV40 UV158 GLASSCOCK UV588

MIDLAND

! UV338

UV349 ECTOR

Midkiff ! 10 UPTON ° Miles REAGAN

44 CITY OF STEPHENVILLE

PROJECT NAME Green River - North Bosque Flood Protection Planning, Project 40051

PROJECT NEED AND DESCRIPTION The Green Creek-North Bosque River HUC-10 has experienced repeated flooding damage and property loss in the last five years caused by severe storms and flooding including three Presidential Disaster Declarations. They City of Stephenville (City) has identified the need for new hydrologic and hydraulic (H&H) models to inform staff of flood risk so that they can properly mitigate that risk. The City is also downstream of nine high hazard dams whose failure could result in devastating loss of life and property within the City of Stephenville and Erath County.

The City of Stephenville is requesting financial assistance to conduct a regional flood planning study. This study will include the development of H&H models that will serve as planning tools to define flood hazard risks for private properties and public infrastructure, and a dam safety assessment of Natural Resources Conservation Service high hazard dam structures.

PROPOSED PROJECT FUNDING TOTAL STUDY COST $450,000 Amount requested from FIF $337,500 Local Contribution $112,500 Local in-kind $0 Federal funding $0

PROJECT SCHEDULE Task Schedule Date Closing March 31, 2021 Flood Planning Study Completion June 30, 2022 (End of Planning Phase)

FINANCIAL The funding being provided by the TWDB is in the form of 100 percent grant and therefore is not subject to our internal risk score analysis that is applied to loan. For this request, staff reviewed the City’s annual audit and funding application information to assess the entity’s ability to manage existing obligations and business practices. Based on this analysis, staff believes the City has adequate capabilities to manage its obligations.

45 form and substance by the Executive Administrator, and shall submit that executed agreement to the TWDB.

46 City of Stephenville Erath County

! Mingus PALO PINTO

¨¦§20 Lake Granbury

HOOD

Morgan Mill Tolar EASTLAND ! ! Hannibal !

¤£377

Lingleville !

Stephenville ! SOMERVELL

¤£281 ! ¤£67 ERATH Selden !

Dublin !

Clairette ! Proctor Lake

BOSQUE Iredell COMANCHE !

Hasse ! HAMILTON

° Miles !

WHARTON COUNTY

PROJECT NAME Waterhole Creek - Caney Creek Basin Flood Protection Study, Project 40006

PROJECT NEED AND DESCRIPTION Over the last 75 years Lower Caney Creek has been constricted due to development along its channel. These constrictions and unregulated development have resulted in an inefficient and poorly draining channel, resulting in additional flood risk to property all along its banks, especially during extreme flood events.

Wharton County (County) is requesting financial assistance to conduct a regional flood planning study. The goal of this study is to reevaluate this entire HUC-10 watershed using more robust unsteady and 2D hydraulic modeling (where needed) coupled with a refined hydrologic analysis utilizing NOAA Atlas 14 precipitation estimates with defined sub- watersheds. This project will include a study of 134 linear miles of channel, topographic field survey of approximately 1 channel section per stream mile, and field survey of approximately 161 bridge/culvert crossings. All field survey data will be merged in with recent 2018 LiDAR data. This project will result in a new hydrologic and hydraulic model (developed to FEMA data capture standards, using local drainage criteria), an alternative analysis to identify structural and non-structural flood control projects, a benefit-cost analysis for each alternative evaluated, three public meetings, three stakeholder meetings, and a final engineering report documenting the analysis performed and recommendations made. This project will also include effort to assist with identifying potential real-time flood warning measures that could be implemented in the future, and also assist with identifying potential future funding sources for construction of identified flood reduction and improved channel conveyance projects. One major outcome of this planning study will be to provide sufficient information and details needed for the community to be able to apply for future FEMA and TWDB construction grants for identified flood control projects. Every effort will be made to incorporate green infrastructure techniques into this planning study and to maintain a good water quality standard for this critical resource. Public outreach to gain input on known flood risks throughout the HUC-10 boundary will also be included.

PROPOSED PROJECT FUNDING TOTAL STUDY COST $570,000 Amount requested from FIF $427,500 Local Contribution $142,500 Local in-kind $0 Federal funding $0

PROJECT SCHEDULE Task Schedule Date Closing March 31, 2021 Flood Planning Study Completion June 15, 2022 (End of Planning Phase)

48 FINANCIAL The funding being provided by the TWDB is in the form of 100 percent grant and therefore is not subject to our internal risk score analysis that is applied to loan. For this request, staff reviewed the County’s annual audit and funding application information to assess the entity’s ability to manage existing obligations and business practices. Based on this analysis, staff believes the County has adequate capabilities to manage its obligations.

49 Wharton County ! ! ! ! ! ! ! !

Columbus UV71 ! ! Alleyton ! r e Fulshear 52 v ! 10 Glidden UV i Simonton ! §¨¦ R ! ! s

o Weston Lakes AUSTIN z

r B Wallis ! Chesterville ! 36 Orchard C UV ! o Eagle Lake lor ad ! o ! Altair R ! i v Rosenberg e Lissie r ¤£90 ! ! COLORADO Eagle Lake Rock Island East Bernard UV10 ! ! §¨¦69 Matthews FORT BEND ! Sheridan Beasley ! ! 540 ! UV Pleak Garwood Bonus 36 ! ! !UV541 UV !Elm Grove Kendleton ! Nada Egypt ! ! Hungerford Needville ! ! Spanish Camp !

Glen Flora LAVACA ! ! Dinsmore New Taiton Wharton ! ! ! ! Burr 71 ! UV !Jones Creek Iago WHARTON ! 60 Boling ! Newgulf ! UV ! ! 526 BRAZORIA UV Lane City ! El Campo ! Pledger ! ¤£59 Danciger ! Hillje ! Cordele 524 ! UV ! ! Louise ! Lake Texana Sugar Valley Danevang ! ! UV522! Van Vleck JACKSON ! Clemville ! MATAGORDA Edna ! Bay City ! 172 35 521 UV Markham UV UV ! ! Crossroads ! 111 La UV Midfield v a ! !

a R 10 iv e Buckeye r Red Bluff ° Elmaton ! ! Miles ! ! ! ! ! ! ! 50

WILLIAMSON COUNTY

PROJECT NAME Williamson County Atlas 14 Floodplain Mapping, Project 40046

PROJECT NEED AND DESCRIPTION Williamson County (County) is one of the fastest growing counties in Texas and has suffered from severe flooding numerous times in the past. Williamson County’s vision is to maintain and improve public infrastructure that reduces flood risk and improves public safety. In support of this vision, the County desires to develop a comprehensive, countywide Flood Protection Plan that serves as a vehicle to integrate and synchronize diverse flood risk management projects and regulations, as well as collaboration with regional and local governments.

The County is requesting financial assistance to conduct a regional flood planning study. The study will establish a new engineering standard where the technical data is consistent (one topographic source, uniform methodology utilizing best available science, such as the latest LiDAR, land cover data, NOAA Atlas 14 precipitation estimates, etc.), and defendable (validated with historical data) throughout the watersheds that drain across the County. The study includes a variety of processes to identify, quantify and communicate flood risks, as well as, identify regional strategies to reduce damage. Specific tasks associated with this plan include: general management, data collection, hydrologic analysis, hydraulic analysis and mapping, conceptual flood mitigation analysis, quality assurance/quality control, and documentation.

PROPOSED PROJECT FUNDING TOTAL STUDY COST $9,299,185 Amount requested from FIF $ 4,649,592 Local Contribution $ 4,649,593 Local in-kind $0 Federal funding $0

PROJECT SCHEDULE Task Schedule Date Closing March 31, 2021 Flood Planning Study Completion August 30, 2023 (End of Planning Phase)

52 Williamson County

! ! ! ! ! ! ! Killeen FALLS ! CORYELL Harker Belton Lake Temple Oenaville Heights ! ! Kempner ! Ratibor!Bean Hill ! ¤£190 !Nolanville ! ! ! Stillhouse Belton Seaton Airville ! ! Oscar ! LAMPASAS Hollow Lake ! ! Dog Ridge Zabcikville! Heidenheimer Cyclone ! ! ! Union Grove Little Red Ranger! Oakalla ! ! River-Academy ! Youngsport 190 ! £ Salado ¤ ! Sparks Rogers ! ! Bowers Cedar Valley ! ! ! Briggs ! Prairie Dell BELL ! Holland ! Buckholts BURNET ! Florence ! ! Val Verde Jarrell ! ! Schwertner Corn Hill ! ! Bartlett ! Davilla Andice ! ! New Corn Hill ! !Theon Sharp Bertram ! ! Walburg ! Granger Granger Lake ! Oatmeal Lake ! Laneport San Gabriel Georgetown 35 ! ! §¨¦ Weir Hare MILAM Liberty Hill Seward ! ! ! Junction Hoxie ! ! Jonah Georgetown ! Circleville! ! ! ! Waterloo Thorndale ! Thrall ¤£183 ! ! WILLIAMSON !Taylor Leander Frame Switch Noack ! ¤£79 ! ! Hutto Round Rock Normans Beversville Cedar Park ! ! Jonestown ! Crossing Shiloh ! ! ! Lago Vista ! Structure ! ! ! Village of McNeil Rices Coupland ! Three Points ! Volente Jollyville ! Crossing ! ! iver ! R Kings Village !

o Pflugerville

d Briarcliff a ! Four Points Coxville r ! ! ! Dessau Blue C lo Marshall Ford ! Point Venture ! o ! LEE Lake Travis Lakeway Village of ! TRAVIS The Hills ! Manor £290 ! Elgin Lake Austin ! ¤ Lake Walter Butler Bee Cave West Lake E Long ! ! ! Hills ! McDade Rollingwood Austin ! ! ! Fitzhugh ! ! BASTROP HAYS Circleville ! Webberville 290 Oak Hill! ! 10 ! ¤£ Sunset Valley Del Valle Paige Dripping ! ° ! Springs Miles ! Garfield ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 53 FIF Category 1 Study Areas December 17 2020 Board Items *

Legend Major Roadways HUC 10 County Boundaries Dallas FIF CAT 1 Study Area Boundaries County Austin

Stephenville Caldwell County Midland Cameron County Drainage District #3 County Chambers County Dallas County Harlingen Hays County Williamson County Iowa Colony Austin Jackson County County-Wide Drainage District Jefferson Hays County County Drainage Jefferson County Drainage District #6 District #6 Caldwell County Karnes County Chambers County Laredo Jackson County Iowa Colony Lower Rio Grande Valley Development Council County-Wide Drainage District Wharton Midland County Karnes County Stephenville County Wharton County Williamson County

Laredo

0 75 150 Miles Lower Rio Grande Valley Development Council

Harlingen Cameron County Drainage District #3

* Draft as of 12/07/20