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“The views, opinions and findings contained in this report are those of the authors(s) and should not be construed as an official Department of the Army position, policy or decision, unless so designated by other official documentation.”

SWG Dredging Conference

Status of Corps Studies and Projects

Sheridan Willey, P.E.

Deputy Chief, Project Management

USACE, Galveston District

November 8, 2018

Byron Williams, PMP

Chief, Project Management

USACE, Galveston District

Galveston District Projects 2

Deep-Draft Channels• Sabine-Neches Waterway• Houston Galveston Navigation

Channelso Entrance Channelo Galveston Harbor & Channelo Houston Ship Channelo Bayport/Barbours

• Texas City Channel• Freeport Channel• Matagorda Ship Channel• Corpus Christi Ship Channel

o Main Channelo LaQuinta Channel o Brazos Island Harbor

Shallow-Draft Channels• Gulf-Intracoastal Waterway• Cedar Bayou• Chocolate Bayou• Channel to Victoria• Channel to Harlingen

Flood Risk Management Projects• Greens Bayou• Sims Bayou• Clear Creek• Raymondville Drain

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Current Projects and Studies for

Deep-Draft Channels

Sabine Neches Waterway, TX 4

Location: Southeast TexasPurpose: NavigationPhase: Preconstruction Engineering and Design (PED)Non-Federal Sponsor: Sabine Neches Navigation DistrictProject Description: Deepening of channel to 48 feet MLLWAuthorized Total Project Cost: $1.3BDate Completed: Finalize Plans & Specs (P&S) – FY 2020Current Status: Working towards completion of 1st set of P&S for construction

Houston Ship Channel, TX 5

Location: Houston, TexasPurpose: NavigationPhase: General Investigations (GI) (Feasibility)Non-Federal Sponsor: Port of HoustonTSP Description: bay widening and bend easings, bayou widening and deepening, multipurpose mooring, shoaling attenuation feature, turning basins Study Cost: $10MEst. Study Completion: Oct 19Current Status: Working on Feasibility-level design and Final Report

Galveston Channel Extension 6

Location: Galveston, TexasPurpose: NavigationPhase: PEDNon-Federal Sponsor: Port of GalvestonProject Description: extending the 45 foot deep Galveston Harbor Channel the additional 2,571 feet to reach the end of the limits of the existing 40 foot channelCost: $1.6MEst. Construction Completion: 2020 (Contract Award)Current Status: Developing the Design Agreement to initiate PED

Freeport Harbor, TX 7

Location: Freeport, TexasPurpose: NavigationPhase: PEDNon-Federal Sponsor: Port Freeport Project Description: Deepening from -46 feet MLLW to -51/56 ft MLLW and Extending federal channel into Upper Stauffer Est. Total Project Cost: $274MEst. Construction Completion: FY2023Current Status: Initiating PED

Matagorda Ship Channel, TX 8

Location: Calhoun & Matagorda Counties Purpose: NavigationPhase: GI (Feasibility)Non-Federal Sponsor: Calhoun Port AuthorityStudy Scope: Improve the navigational efficiency and safety of the deep-draft navigation systemTSP Description: • Main Channel: 47’ depth, 350’ width • Turning Basin: 47’ depth. 1,200’ width• Entrance Channel: 49’ depth, 600’ widthStudy Cost: $3M (50/50 with Calhoun Port Authority)Est. Study Completion: August 2019Current Status: Completion of the feasibility-level design and editing of final report

Corpus Christi Ship Channel, TX 9

Location: San Patricio and Nueces Counties, TexasPurpose: NavigationPhase: Construction – Main Channel & Barge LanesNon-Federal Sponsor: Port of Corpus Christi Authority

Project Description: Deepen existing 47-foot deep MLLW channel to 54 feet MLLW and widen channel across bay from 400 to 530 feet. Est. Total Project Cost: $350M (224.5M Fed & 125.7M Non-Fed)Est. Project Completion: FY 2022Current Status: Negotiation of Entrance Channel Contract, Preparing 65% P&S & DDR

Corpus Christi Ship Channel (LaQuinta), TX 10

Location: San Patricio and Nueces Counties, TexasPurpose: NavigationPhase: General Investigation (Feasibility)Non-Federal Sponsor: Port of Corpus Christi AuthorityProject Description: Deepening the existing -47 feet to -54 feet MLLW and widening from 400 feet to an underdetermined width to accommodate increased vessel traffic from new and existing industries. Est. Total Study Cost: $3M (50% Fed/50% NFS)Est. Study Completion: 3 years Current Status: Initiation of feasibility phase

Brazos Island Harbor, TX 11

Location: Brownsville, TexasPurpose: NavigationPhase: Sections 204(f),10 & 404 (Non-Federal Sponsor work)Non-Federal Sponsor:Brownsville Navigation District Project Description: Deepen existing 42 feet MLLW channel to depth of 52 feet MLLWEst. Total Project Cost: $285MEst. Project Completion: 2023Current Status: Non-Federal Sponsor to construct authorized project. Memorandum of Agreement executed for review of Section 204(f) AOM reportprepared by Non-Federal Sponsor.

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Current Projects and Studies for

Shallow-Draft Channels

Cedar Bayou, TX 13

Location: Galveston Bay in Liberty County, TexasPurpose: NavigationPhase: ConstructionNon-Federal Sponsor: Cedar Bayou Navigation DistrictProject Description: Extending channel by 8 miles to HWY 146 Est. Project Completion: 3 contracts in a 3-year periodCurrent Status: Economic update prepared in 2015 to include Sec. 6009 benefits. Preconstruction Engineering & Design was completed in 2008. Awaiting construction funding.

Chocolate Bayou, TX 14

Location: Brazoria Co, TexasPurpose: NavigationPhase: Construction- Last Contract Non-Federal Sponsor: Brazoria Co. Conservation & Reclamation Dist. #3Project Description: Dredge Material Disposal FacilitiesEst. Total Project Cost: $37.5M (Fed and Non-Fed)Est. Contract Award: TBD (pending receipt of funding)Current Status: Awaiting funding to complete final contract

GIWW, Brazos River Floodgates & Colorado River Locks, TX15

Location: Gulf Intracoastal Waterway from Brazos River to Colorado RiverPurpose: NavigationPhase: FeasibilityNon-Federal Sponsor: 100% Federal & TXDOT (Partner)Study Scope: Improve safety and navigation efficiency on the GIWWTotal Study Cost: $3MEst. Completion: Sep 19Current Status: Completion of the feasibility-level design and editing of final report

GIWW Brazos River Floodgates

GIWW Colorado River Locks

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Baseline Projectsfor

Flood Risk Management

Greens Bayou 17

Location: Houston, TexasPurpose: Flood Damage ReductionPhase: Construction (ongoing)Non-Federal Sponsor: HCFCDProject Description: Estimated Total Project Cost: $63M

Current Estimated Completion Cost: $4MCurrent Status: Work began in 2015 and physical completion is anticipated in March 2020Population at Risk: 8,200Potential Economic Consequences: $10M

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Supplemental-Funded Projectsfor

Flood Risk Management

Bipartisan Budget Act of 2018

Title IV - Corps of Engineers

• Investigations− $75M (of $135M total) for States

and areas impacted by Harvey, Irma, and Maria

− Full Federal expense− Reduce flood and hurricane risk

• Construction− $10.425B (of $15B total) for

States and areas impacted by Harvey, Irma, and Maria

− NFS cash contribution financed over 30 years post construction completion

− Construct flood and storm damage reduction projects authorized/Chief’s Reports/studies under investigations

• Implementation Guidance and Investment Program: https://www.usace.army.mil/Missions/Civil-Works/Budget/

USACE – Galveston District Funded ProjectsProject Name FundingCONSTRUCTIONBrays Bayou, TX $75,000,000Addicks and Barker Dam Safety (Phase 1) $1,454,000Clear Creek, TX $295,165,000Hunting Bayou, TX $65,000,000Lower Colorado River (Wharton, TX) $73,290,000Sabine Pass to Galveston Bay, TX $3,957,134,000White Oak Bayou, TX $45,000,000TOTAL CONSTRUCTION $4,512,043,000GENERAL INVESTIGATION STUDIESCoastal Texas Protection & Restoration Study, TX $3,804,000Buffalo Bayou Resiliency Study, TX $6,000,000Houston Regional Watershed Assessment, TX $3,000,000Brazos River Erosion Management Study, TX $3,000,000TOTAL STUDIES $15,804,000

Sabine Pass to Galveston Bay Project

Freeport & Vicinity:System length: 43.3 mi Length of levee raise: 69,375 ftLength of new floodwall: 29,255 ft

Port Arthur & Vicinity:System length: 29.2 mi Length of levee raise: 29,200 ftLength of new levee: 1,830 ftLength of new floodwall: 30,090 ft

ECONOMIC SUMMARY• Estimated First Cost from report:

$3,248,606,000*• NED Net Benefits: $300,043,000• Benefit-to-Cost Ratio: 3.1 to 1 @ 2.88%• Annual O&M: $5,467,000

* inflated to current costs of $3,957,134,000

Orange County: Proposed System length: 26.72 milesLength of new levee: 15.56 miles Length of new floodwall: 10.75 miles

Addicks & Barker ReservoirDam Safety Modification Study, Phase 1

Location: Houston, TexasProgram: Dam Safety (Phase 1)Phase: Construction (ongoing)Non-Federal Sponsor: 100% FEDAuthorized Total Project Cost: $129.9MCurrent Estimated Completion Cost: $95MPurpose: Flood Damage ReductionDam Safety Action Classification: DSAC 1Dam Safety Issues: High risk associated with seepage and piping beneath, around, and near outlet works structure conduitsPopulation at Risk: 1.2MPotential Economic Consequences: $60B Addicks New Outlet Structure

Addicks DamBarker Dam

Clear Creek, TXAuthorization: Flood Control Act of 1968 Purpose: Flood Risk ManagementPhase: Potential New Start Construction CapabilityNon-Federal Sponsor: Harris County Flood Control DistrictTotal Project Cost: $295M (remaining features)Project Features: Completed:

• Second Outlet Gate completed in 1991; Channel completed in 1997.

• Prevents saltwater intrusion • Turned over to HCFCD for operation

Remains to be completed: • 15.2 miles of high flow channel benches; leaving intact the existing low flow stream bottom ecology

• In line detention basins (485 acre-foot)• 2.4 miles of Turkey Creek widening (Dixie Farm Rd to confluence with Clear Creek)

• 0.8 miles of Mud Gully – concrete-lined (Sagedowne to Astoria)

• 2.1 miles of Mary’s Creek (Harkey Rd to SH 35)

Brays Bayou23

Location: Houston, TexasPurpose: Flood Damage ReductionPhase: Construction Non-Federal Sponsor: Harris County Flood Control DistrictConstruction Completed: 2021Authorized Total Project Cost: $506MPopulation at Risk: 350,000 ResidentsPotential consequences if construction isn’t completed: • 12 Police & Fire Stations• 24 Hospitals• 138 Health Clinics• 88 Pharmacies• 51 Public School • 40,000 Homes

Location: Houston, TXPurpose: FRM - New Study Start 211f ProjectNon-Federal Sponsor: Harris County Flood Control DistrictScope: Address flood risks of Hunting BayouCosts: $65MPotential FRM Measures:• 3.8 miles grass-lined channel conveyance

improvement• 75 acre detention basin• 17 bridge replacements/modifications

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Hunting Bayou

Location: Houston, TXPhase: FRM New Study Start 211f ProjectPurpose: Flood Risk ManagementNon-Federal Sponsor: Harris County Flood Control DistrictScope: Address flood risks of White Oak BayouCosts: $45M Potential FRM Measures:• Channel conveyance improvement from

Cole Creek to FM 1960• 4 detention basin with approx. 2,940

acre-ft of storage• 12 miles of a linear bikeway

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White Oak Bayou

Lower Colorado River Basin (Wharton), TX

Authorization: Section 1001(43) of WRDA 2007Type of Project: Flood Risk Management (FRM)Project Phase: ConstructionNon-Federal Sponsor: City of WhartonAuthorized Total Project Cost: $73,290,000Project Features: The Wharton project, a separable element of the overall Lower Colorado River Phase I Project, consists of approximately 35,600 feet of levees, 2,300 feet of floodwalls, 7,000 feet of channel modifications, and interior drainage features

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Supplemental-Funded Studies for

Flood Risk Management

Coastal Texas 28

Location: Coastal Texas

Purpose: Coastal Storm Risk Management & Ecosystem Restoration

Phase: Feasibility Study

Non-Federal Sponsor: Texas General Land Office

Est. Completion Date: April 2021

Population at Risk: 7,120,000+(25% of the state’s total pop.)

Potential Economic Consequences:• 5 million barrels of oil per day

refined in the area• UTMB employs 11,000+ people • NASA employs 3,000+ people • Several large petrochemical plants –

Dow, BP, Enterprise

Buffalo Bayou and Tributaries Resiliency Study, TXAuthorization: Section 216 of Flood Control Act of 1970Purpose: Flood Risk Management (FRM)Phase: FeasibilityNon-Federal Sponsor: Harris County Flood Control DistrictScope: Address residual risks associated with flood risk impacts to structures in the pool area upstream of both reservoirs and downstream along Buffalo Bayou Potential FRM Measures:o Additional reservoir/damo Increased reservoir storage

capacityo Reservoir water level equalizationo Improved outlet discharge

capacityo Improved inflow and outlet

discharge channelso Acquisition of flowage easements

and buyoutso Changes in dam operation plano Risk Communication Strategies Buffalo Bayou @ Below 59 Bridge

Buffalo Bayou @ Gessner

Addicks Dam

Brazos River, Fort Bend County, TXAuthorization: Section 1201 of WRDA 2016Purpose: Flood Risk Management (FRM)Phase: FeasibilityNon-Federal Sponsor: Fort Bend County, TXScope: Investigate stream bank measures to reduce or mitigate erosion losses, reduce the impacts of increased flood risk and provide protection benefits for the above listed public and infrastructurePotential FRM Measures:o Leveeso Shoreline stabilization

features

Houston Regional Watershed AssessmentAuthorization: Section 729 of WRDA 1986, as amendedType of Project: Flood Risk Management (FRM)Project Phase: FeasibilityNon-Federal Sponsor(s): Harris County Flood Control District Scope: o Characterize performance of

flood risk management features in the Metropolitan Houston Region as an integrated system of 22 watersheds

o Understand how development patterns are affecting watershed hydrology across systems

o Update statistics of extreme precipitation events for systems simulation to explain current and future potential flooding problems

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