STATUS OF USACE GALVESTON DISTRICT FLOOD RISK MANAGEMENT STUDIES - - PowerPoint PPT Presentation
STATUS OF USACE GALVESTON DISTRICT FLOOD RISK MANAGEMENT STUDIES AND PROJECTS American Council of Engineering Companies 19 July 2019 Andrew Weber, P.E. Project Manager The views, opinions and findings contained in this report are those
“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
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▪ First engineer district in Texas, established 1880 ▪ 50,000 square mile district boundary, ~100+ miles inland ▪ 28 ports handling 538+ M tons
▪ 1,000+ miles of channels
− 750 miles shallow draft − 270 miles of deep draft
▪ 367 miles of Gulf coastline ▪ 30-40 M cubic yards/yr material dredged ▪ 16 Congressional districts ▪ 48 Texas counties, 4 Louisiana parishes ▪ 18 Coastal counties - bays / estuaries ▪ 9 coastal basins
(FRM)
Management (CSRM)
Support
USACE – Galveston District Funded Projects Project Name Funding
CONSTRUCTION
Addicks and Barker Dam Safety (Phase 1) $1,454,000 Brays Bayou, TX $75,000,000 Clear Creek, TX $295,165,000 Hunting Bayou, TX $65,000,000 Lower Colorado River (Wharton, TX) $73,290,000 Sabine Pass to Galveston Bay, TX $3,957,134,000 White Oak Bayou, TX $45,000,000 TOTAL CONSTRUCTION $4,512,043,000
GENERAL INVESTIGATION STUDIES
Coastal Texas Protection & Restoration Study, TX $3,804,000 Buffalo Bayou Resiliency Study, TX $6,000,000 Houston Regional Watershed Assessment, TX $3,000,000 Brazos River Erosion Management Study, TX $3,000,000 TOTAL STUDIES $15,804,000
Two NAV new starts in FY19 Work Plan. *Sabine Neches Water Way CIP ($1.4B) *Cedar Bayou CIP ($54.4M)
Description/ Capacity Planned /Actual Award PoP Supported Programs General SOW $96M A-E Design Services – MATOC $96M 6 Jun 2019 (A) 7 years Civil, IIS, Mil ** A-E Horizontal Design, EDC, CPS Hydrographic Survey – MATOC $7M 23 Sep 2019 5 years Civil, IIS, Mil ** Hydrographic Survey Topographic Survey – MATOC $10M 16 Aug 2019 5 years Civil, IIS, Mil ** Land Survey and Mapping Geotech – MATOC $20M 30 Sep 2019 5 years Civil, IIS, Mil ** Professional Services – Geotech and Lab Testing A-E Design Services S2G Freeport – SATOC $72M 14 Aug 2019 8 years Supp only A-E Design, EDC, CPS A-E Design Services S2G Orange – SATOC $228M 29 Aug 2019 8 years Supp only A-E Design, EDC, CPS Supp Horizontal Construction – MATOC $7B 31 Dec 2020 8 years Primarily Supp, Civil, IIS, Mil Horizontal Construction Small Business Horizontal Construction – MATOC $500M 31 Dec 2019 TBD Civil, IIS, Mil Horizontal Construction ** Maximum use for Mil and IIS is $10M Supp = BBA 18 Supplemental Program PoP = Period of Performance
Authorization: Section 216 of Flood Control Act of 1970 Purpose: Flood Risk Management (FRM) Phase: Feasibility Non-Federal Sponsor: Harris County Flood Control District Scope: 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:
residents of their risks
Status:
Buffalo Bayou @ Below 59 Bridge Buffalo Bayou @ Gessner Addicks Reservoir 7
Buffalo Bayou and Tributaries Resiliency Study, TX
Addicks Dam
Houston Regional Watershed Assessment
Authorization: Section 729 of WRDA 1986, as amended Type of Project: Flood Risk Management Project Phase: Feasibility Non-Federal Sponsor: HCFCD Scope:
flood risk management features in the Metropolitan Houston Region as an integrated system
patterns are affecting watershed hydrology across systems
precipitation events for systems simulation to explain current and future potential flooding problems
Status:
Brazos River, Fort Bend County, TX Authorization: Section 1201 of
WRDA 2016
Purpose: Flood Risk Management Phase: Feasibility Non-Federal Sponsor: Fort Bend
County
measures to reduce or mitigate erosion losses, reduce the impacts of increased flood risk and provide protection benefits for the above listed public and infrastructure
Potential FRM Measures:
Status:
Selected Plan
Coastal Texas Protection and Restoration Project
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Location: Coast of Texas Phase: Feasibility Study Authorized Study Cost: $19.8 M 50-50% FED-Non FED cost share thru FY19. FY20/21 will be 100% Federal (BBA 18) Non-Federal Sponsor: Texas General Land Office Scope: Coastal Storm Risk Management & Ecosystem Restoration along the Texas Coast Current Status: Public Review of draft report complete. 2nd public comment period scheduled September 2020.
http://coastalstudy.texas.gov/
Addicks & Barker Dams Construction Mega Project
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Location: Houston, Texas Program: Dam Safety (Phase 1) Phase: Construction Contract Amount: $75,139,529 Completion Date: June 2020 Project Status: 73% Complete Sponsor: 100% FED Purpose: Flood Risk Management Dam Safety Action Classification: DSAC 1 Dam Safety Issues: High risk associated with the seepage and piping beneath, around, and near the outlet works structure conduits Population at Risk: 1.2 million Potential Economic Consequences: $60 billion
Addicks New Outlet Structure Addicks Dam Barker Dam
Addicks Structure Progress
1 3
21 Jan 19
Aerial, 16 May 19 ACB installation, 2 May 19 Embankment Construction, 6 May 19
Barker Structure Progress
1 4
18 Dec 18
Rebar installation for parabolic chute slab, 23 May 19
Aerial, 16 May 19
Clear Creek, TX
Authorization: Flood Control Act of 1968/Sec 1043 of WRRDA 2014 Purpose: Flood Risk Management Phase: Preconstruction Engineering and Design Non-Federal Sponsor: HCFCD (constructing) Total Project Cost: $295M (remaining features) Project Features:
leaving intact the existing low flow stream bottom ecology
Farm Rd to confluence with Clear Creek)
(Sagedowne to Astoria)
SH 35) Status:
provide them to construction project with Federal funds
PED/construction
Supplemental Funded Section211(F) Construction Projects
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Project: ($131 M; cost share 75% Fed/ 25% non-Fed)*
Project: ($171 M; cost share 75% Fed/35% non-Fed)*
Project: ($506 M, balance to complete $74M; cost share 75% Fed/25% non-Fed)* * As modified by BBA 18.
Brays Bayou
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Location: Houston, Texas Purpose: FRM Phase: Sec 211(f) - Construction by HCFCD, Reimbursement by USACE Non-Federal Sponsor: HCFCD Construction Completed: 2021 Authorized Total Project Cost: $506M Population at Risk: 350,000 Residents Status:
and reimbursing costs pre-BBA 2018 with non-supplemental funding streams
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Location: Houston, TX Purpose: FRM Phase: Sec 211(f) - Construction by HCFCD, Reimbursement by USACE Non-Federal Sponsor: HCFCD Scope: Address flood risks of White Oak Bayou Costs: $45M FRM Measures:
improvement from Cole Creek to FM 1960
2,940 acre-ft of storage
Status:
continues White Oak Bayou
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Location: Houston, TX Purpose: FRM Phase: Sec 211(f) - Construction by HCFCD, Reimbursement by USACE Non-Federal Sponsor: HCFCD Scope: Address flood risks of Hunting Bayou Costs: $65M FRM Measures:
conveyance improvement
Status:
work continues Hunting Bayou
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Freeport & Vicinity: System length: 43.3 mi Length of levee raise: 69,375 ft Length of new floodwall: 29,255 ft Port Arthur & Vicinity: System length: 29.2 mi Length of levee raise: 29,200 ft Length of new levee: 1,830 ft Length of new floodwall: 30,090 ft
ECONOMIC SUMMARY
$3,248,606,000*
2.88%
* inflated to current costs of $3,957,134,000 Orange County: Proposed System length: 26.72 miles Length of new levee: 15.56 miles Length of new floodwall: 10.75 miles
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