Project record

St. Joseph Harbor 2026 dredging and sediment-placement research

Aerial view of St. Joseph Harbor where the St. Joseph River enters Lake Michigan between long harbor piers

U.S. Army Corps of Engineers via Wikimedia Commons, public domain

USACE Detroit District's 2026 St. Joseph Harbor campaign combines a bounded federal-channel maintenance contract with an ERDC field experiment. Viking Marine Construction is scheduled to hydraulically dredge about 83,000 cubic yards and pump the material to a perpendicular nearshore placement about half a mile south of the harbor, while ERDC measures turbidity, bathymetry, sediment movement, and shoreline response.

Project signal

Construction in United States

Separate four evidence layers: the dredging contract and navigation channel, the selected material route and authorization basis, the monitored placement geometry, and the later performance result. Quantity placed and campaign completion do not by themselves prove beneficial-use performance, beach response, reduced future shoaling, or regulatory acceptance for wider replication.

Current status Outer harbor dredging and ERDC placement monitoring active Source confidence Confirmed

Location

United States / Americas

Segment

Port infrastructure

Status

Outer harbor dredging and ERDC placement monitoring active / Confirmed

Evidence reviewed

17 July 2026

Controlled taxonomy

Related sectors

The detailed segment above is the primary work classification. These broader sector links connect the project to related delivery and market research.

Knowledge context

Related knowledge topics

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Project anatomy

Scope, counterparties, and execution logic

Client / authority
U.S. Army Corps of Engineers, Detroit District
Delivery parties
Viking Marine Construction, USACE Engineer Research and Development Center (research monitoring)
Contract route
Federal navigation maintenance dredging contract paired with an ERDC sediment-placement research programme
Execution window
Early July through the end of August 2026
Works package
Hydraulic dredging of approximately 83,000 cubic yards from the federal navigation channel and pipeline placement about half a mile south of the harbor
Marine interfaces
Federal channel maintenance, submerged-pipeline transfer, nearshore sediment placement, turbidity monitoring, hydrographic survey, sampling, and wave-driven sediment movement
Commercial read
A bounded maintenance campaign with a research placement method; the reviewed release does not state the contract value
Next milestone
Completion of dredging by end-August 2026 and publication of ERDC monitoring results on the perpendicular placement geometry

Material change register

What changed, when, and what it proves

Only source-bound events that alter phase, scope, counterparties, delivery, completion, commissioning, or acceptance are listed. A change can advance the record without proving the next gate.

USACE announced the 2026 dredging and research campaign

Viking Marine was due to dredge about 83,000 cubic yards and pump it to a perpendicular nearshore placement south of the harbor. The release set the July-August work plan and monitoring method; final volumes, channel condition, and shoreline response still need field results.

Read controlling source

The 2025 campaign set the baseline for two-season monitoring

USACE paired a smaller, roughly 22,000-cubic-yard outer-harbor campaign with ERDC monitoring planned across 2025 and 2026. That earlier along-shore placement is the comparison case for the new perpendicular geometry; it is not evidence of the 2026 contractor's output.

Read controlling source

Delivery watch

Evidence needed next

Completion of dredging by end-August 2026 and publication of ERDC monitoring results on the perpendicular placement geometry

Decision watchpoints

  • Actual mobilisation and dredging completion by the end-August window
  • Surveyed volume removed from the federal navigation channel
  • Placement geometry and pipeline operations about half a mile south of the harbor
  • Turbidity, bathymetry, sampling, drone, and land-video monitoring results
  • Post-placement movement under Lake Michigan wave conditions
  • Shoreline response, erosion or accretion, and any channel-infill consequence
  • Regulatory and Federal Standard treatment of any future repeat placement
  • Owner decision on replication, adaptation, or return to along-shore placement

Related records 2

Project availability status

This public project page is a tracked market record rather than a tender notice, contractual commitment, or commercial instruction. Use the status, confidence label, evidence-review date, and source note together when judging how much weight to place on the signal.

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Record control

Evidence reviewed date is not a project-event date.

IMWO changes phase, participants, scope, completion, or acceptance wording only when a dated source establishes the change. The review date records when the evidence set was checked; it does not claim that physical work changed on that date.

Evidence reviewed 17 July 2026 Sources in this record 6

Source record

USACE Detroit District's 1 July 2026 release controls the project facts: Viking Marine Construction, approximately 83,000 cubic yards, hydraulic dredging, the submerged pipeline, placement about half a mile south of the harbor, the perpendicular peninsula geometry, the end-August schedule, and ERDC's turbidity, survey, sampling, drone, and video monitoring. The district project page controls the federal channel, pier, revetment, turning-basin, and commercial-wharf context. USACE headquarters and EPA pages define beneficial use and the Federal Standard, while the ERDC Jekyll Island publication shows the type of wave, hydrodynamic, shoreline-change, and sediment-transport analysis that can test a nearshore placement concept. Those three sources are methodological context only; they do not prove St. Joseph authorization, performance, or replication.

Phase: construction. Evidence reviewed: 17 July 2026.

Project sources 6