JBAB Overflow and Diversion Structures Project

JBAB Overflow and Diversion Structures

Overview

The JBAB Overflow and Diversion Structures Project, located on Joint Base Anacostia-Bolling (JBAB) military facility, included the construction of a tunnel overflow structure and diversion chamber. The diversion chamber diverts excess combined sewer flow to the Blue Plains Tunnel where it is stored and eventually treated at the Blue Plains Advanced Wastewater Treatment Plant prior to discharge to the Potomac River. The overflow structure controls tunnel overflows to the Potomac River when its capacity is exceeded while providing solids and floatable control. The overflow structure has been architecturally designed to serve the dual purpose of providing a scenic overlook structure and providing views of the Potomac River and surrounding areas to JBAB personnel.

Scope of Work

  • Construction of a new diversion chamber to divert flow from the existing Potomac Outfall Sewers to the Blue Plains Tunnel
  • Construction of a new overflow structure to relieve the Blue Plains Tunnel to the Potomac River when its design capacity is exceeded
  • Installation of new hydraulic internals within the existing shaft constructed on the Blue Plains Tunnel
  • Demolition of an existing combined sewer overflow, abandonment of its outfall pipe, and restoration of the shoreline
  • Commissioning of Clean Rivers system south of RFK Stadium

Partners

DC Water worked closely with multiple stakeholders to provide timely information about the project, to solicit input, and to ease the burdens of construction. These stakeholders included affected residents, Joint Base Anacostia-Bolling, US Army Corps of Engineers, District Department of Transportation, National Park Service and the District Office of the Deputy Mayor for Planning and Economic Development. DC Water also coordinated with Advisory Neighborhood Commissions to provide regular updates.

 

clean river
Clean Rivers

The Clean Rivers Project is DC Water's ongoing program to reduce combined sewer overflows into the District's waterways - the Anacostia and Potomac Rivers and Rock Creek. The Project is a massive infrastructure and support program designed to capture and clean water during heavy rainfalls before it ever reaches our rivers.

Upcoming Meeting

Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

West Potomac Park Drive SW Intersection
DC Water adds new road through West Potomac Park, improving access during Potomac River Tunnel construction

(Washington, DC) – DC Water today announces the opening of West Potomac Park Drive SW, a new road constructed as part of the Potomac River Tunnel (

Latest Blog Post
Photo of Great Falls of the Potomac River with fast moving rapids going over the falls
The Critical Need for a More Resilient Water Source and Protecting the One We Have
Source Water Protection Week highlights the case for second water source.
Upcoming Meeting
Date
December 17, 2024
Time
Tuesday, 4:00 PM

Upcoming Events