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Home My WebLink About(P2) DD7 2-2022 CoPA Presentation PP Jefferson County Drainage District No. 7 “Drainage • Storm Water Management ” 1 DD7-Watersheds Jefferson County DD7 Established in 1946 Provides drainage and hurricane protection for 107.5 sq. miles of south Jefferson County Initial HFPP authorized in 1962 and completed in early 1980s Current System consists of: 281 miles concrete & earthen ditches 36 miles of levee and seawall 20 pump stations Jefferson County Drainage District No. 7 (DD7) is one of three Drainage Districts located within Jefferson County, Texas. DD7 was established as a political subdivision of the State of Texas in 1946 and serves the drainage needs of South Jefferson County. The District covers an area of 107.42 square miles and encompasses the cities of Port Arthur, Groves, Nederland and Port Neches and unincorporated areas of Jefferson County. Two thirds of the District is below five (5) feet above sea level. Sixty (60) to Seventy (70) percent of the District drains to Taylor's Bayou. Rainfall for this area averages 53 inches per year. In 1962, as a joint venture between DD7 and the U.S. Army Corps of Engineers, a Hurricane Flood Protection System was incorporated into the District at a cost of $84 million; the District paid 30% of the cost, U.S. Government 70%. At present 281 miles of concrete and earthen outfall ditches, 36 miles of levee and seawalls, and 20 Pump Stations serve the District with a combined pumping capacity of 8.2 million gallons per minute. 2 Port Arthur and Vicinity CSRM Plan The recommended plan in the Final Feasibility Report is to raise approximately 5.5 miles of the existing 27.8 miles of earthen levee to elevations ranging from about 14.4 to 17.2 feet and construct/replace approximately 5.7 miles of floodwall to between 14.4 to 19.4 feet. A separate 1800 feet of new earthen levee will be constructed and 26 vehicle closure structures will be replaced and erosion protection added. Provides enhanced protection by increasing the level of performance and resiliency of the existing HFPP. Contracts will be designed in house and through AE Contracts with support from other districts. 3 S2G PAV – Project Costs Total Project Cost $863,000,000 Federal Share $560,950,000 Non-Federal Share $302,050,000 Cash $248,223,000 LERRD $ 53,827,000 Cost Risk: Cost for acquisition of Lands and Utility Relocations HTRW Updated Coastal Hazards Report – Increase in Levee/Floodwall Heights Updated Alignment to address potential flanking of storm surge Inflation and Price Level adjusments 4 17TH STREET HIGH SEAS TB ELLISON PARKWAY MARSHALL 2ND AVENUE EL PASO AVENUE LIBERT AVENUE FT WORTH AVENUE MARSHALL AVENUE BLUE BONNET AVENUE RICHMOND AVENUE DE QUEEN BOULEVARD THOMAS BOULEVARD KANSAS AVENUE 4TH STREET NEDERLAND AVENUE GRANNIS AVENUE ST AUGUSTINE AVENUE W 9TH STREET W 7TH STREET W 17TH STREET W 15TH STREET W 14TH STREET NASHVILLE AVENUE DALLAS AVENUE AUGUSTA AVENUE W 8TH STREET 5TH STREET 6TH STREET 8TH STREET 9TH STREET CHARLESTON AVENUE W 10TH STREET W THOMAS BOULEVARD 11TH STREET 10TH STREET 18TH STREET 17TH AVENUE 12TH STREET 13TH STREET 14TH STREET 15TH STREET PROCTER STREET W 18TH STREET W 11TH STREET MEMPHIS AVENUE GULFWAY DRIVE (HIGHWAY 87) TEXAS AVENUE W 6TH STREET PLEASURE PIER BOULEVARD T N E E E V E L H T U O S RANCE ROAD AUSTIN AVENUE ORANGE AVENUE GILLHAM CIRCLE NORTHWIND LAKESHORE LAKESHORE DRIVE W GULFWAY DRIVE (HIGHWAY 87) 3RD AVENUE SAVANNAH AVENUE VICKSBURG AVENUE GALVESTON AVENUE SOUTHWIND NEW ORLEANS AVENUE FLORIDA AVENUE SAN ANTONIO AVENUE ISLANDWAY MOBILE AVENUE HOUSTON AVENUE WACO AVENUE LAKE CHARLES AVENUE BEAUMONT AVENUE STILWELL BOULEVARD SHREVEPORT AVENUE ATLANTA AVENUE ORANGE AVENUE STILWELL BOULEVARD 10TH STREET 15TH STREET PROCTER STREET HOUSTON AVENUE AUSTIN AVENUE 11TH STREET MOBILE AVENUE 14TH STREET RAILROAD AVENUE HOUSTON AVENUE MARSHALL AVENUE PROCTER STREET 8TH STREET MOBILE AVENUE PROCTER STREET 7TH STREET 7TH STREET RICHMOND AVENUE 7TH STREET DALLAS AVENUE 6TH STREET 8TH STREET GRANNIS AVENUE LIBERT AVENUE WACO AVENUE 15TH STREET W 13TH STREET 12TH STREET 15TH STREET PROCTER STREET AUGUSTA AVENUE NASHVILLE AVENUE KANSAS AVENUE 8TH STREET DALLAS AVENUE LAKESHORE DRIVE MEMPHIS AVENUE 12TH STREET WACO AVENUE MEMPHIS AVENUE 13TH STREET DE QUEEN BOULEVARD 13TH STREET WACO AVENUE 11TH STREET 15TH STREET LIBERT AVENUE 14TH STREET PROCTER STREET MOBILE AVENUE CHARLESTON AVENUE 13TH STREET 5TH STREET 9TH STREET 18TH STREET THOMAS BOULEVARD AUSTIN AVENUE Legend PAV03A PAV03B 5 6 7 8 9 9 10 10 11 11 12 12 Mitigation action plans in review Rodair Detention A3A Detention Groves Detention Halbouty Detention – Expansion 13 13 14 14 Questions? 15