Project record

Green Bay Harbor maintenance dredging and Cat Island placement

Participation
Not assessed
Project facts checked

USACE announced approximately 180,000 cubic yards north of Cat Island, with an approximate mid-August to mid-October work window

Project sources

Green Bay's federal channel north of Cat Island was the subject of an 18 August 2026 USACE maintenance-dredging notice. Approximately 180,000 cubic yards were to be placed at Cat Island during work running roughly from 15 August to 15 October. The notice's separate effective period ended on 17 October. The notice describes announced campaign scope, not accepted final quantities.

Green Bay dredging programme diagram linking the announced 180,000-cubic-yard channel removal to Cat Island placement and separate navigation and habitat outcomes

Graphic: IMWO, based on USACE notice 214907 and dated harbour and habitat records; programme diagram, not a site survey or construction photograph

Location

United States / Americas

Segment

Navigation channel maintenance dredging

Phase

Construction / Confirmed

Last checked

18 August 2026

Coverage

Related sectors

Navigation channel maintenance dredging is the primary work classification. Related sectors connect this record to adjacent marine delivery and market coverage.

Subject index

Related subjects

These subject pages bring together related projects, technical articles, reports, and evidence methods.

Project anatomy

Contract scope and delivery roles

Client / authority
US Army Corps of Engineers, Chicago District
Delivery parties
Campaign contractor - not named in navigation notice 214907, Cat Island habitat coordination - US Army Corps of Engineers and US Fish and Wildlife Service
Contract route
The navigation notice reports a maintenance campaign rather than a solicitation or award. Contractor identity, procurement method, contract number and contract value are not disclosed in the four cited historical sources.
Execution window
The notice describes work starting approximately 15 August 2026 and finishing about 15 October; its effective banner spans 15 August to 17 October. The 2025 factsheet describes an August 16 to March 14 dredging and placement window, which is an older planning reference rather than evidence of the campaign's actual permit conditions.
Works package
Approximately 180,000 cubic yards of federal-channel maintenance dredging north of Cat Island, with placement at Cat Island. The older harbour baseline includes more than 14 miles of channel, a 26ft outer channel and 24ft/22ft inner reaches; those dimensions are not certified depths from the 2026 campaign.
Marine interfaces
Navigation-channel access and Cat Island placement are operationally connected. The placement facility reuses clean sediment in an island-chain restoration setting that also supports piping-plover habitat. Nesting seasons, operating conditions and sediment acceptance affect the sequencing of removal and placement.
Commercial evidence boundary
The 180,000-cubic-yard figure is an approximate announced scope. The 2025 factsheet's annual maintenance demand and dredging backlog are dated baselines, not this contract's measured quantities. None of the cited sources names a price, payment, final account or certified completed volume.

Contract and delivery chain

Work packages and named roles

Published scope, named parties and supporting evidence for each workstream.

Dredging

Federal channel north of Cat Island

Named party
USACE, Chicago District
Evidence status
Confirmed
Source position
Notice 214907 reports approximately 180,000 cubic yards and a mid-August to mid-October work window. Source
Placement

Cat Island dredged-material placement facility

Named party
USACE, Chicago District
Evidence status
Confirmed
Source position
The navigation notice names Cat Island as the material destination; the 2023 account explains the facility's clean-sediment and habitat role. Source
Close-out

Accepted channel depths and quantities

Named party
Campaign delivery parties
Evidence status
Not evidenced
Source position
The announcement supplies no post-dredge survey, final removed volume, placement acceptance or completed navigation release.

Evidence gap

What remains unverified

Outstanding evidence

  • Current permitted dredging and placement conditions
  • Progress notice and changes to the approximate October window
  • Post-dredge hydrography and accepted removal quantities
  • Cat Island placement volumes and habitat monitoring

Related records 2

Reporting status

Project phase
Construction
Evidence confidence
Confirmed
Last checked
18 August 2026
Cited sources
4

Sources and related records

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Source collections

Project sources 4