Narragansett council weighs short-term dredging options for Narrow River amid marsh, wildlife and funding concerns

Narragansett council members and engineering consultants on Sept. 16 continued a months-long review of options to dredge the mouth of Narrow River, hearing revised short-term mechanical proposals that could restore boat access and shore resiliency while posing trade-offs for marsh health and permitting timelines.

Foth Infrastructure and Environment presented five alternatives, including two new short-term mechanical options labeled alternatives 4 and 5. Caitlin Cross and Mike Campion of Foth said the mechanical approaches would use a 60-foot long-reach excavator and would move roughly 44,000 to 53,000 cubic yards of sand depending on whether the material is placed as a berm or built into a dune feature. "These short-term alternatives get us something usable and workable in the meantime," Cross said, adding the dredging would be taken to minus 4 mean lower low water plus a one-foot allowable overdredge.

Why it matters: Long-term hydraulic dredging alternatives previously presented carried multimillion-dollar price tags and greater potential impacts to the river and adjacent marsh. The council read earlier cost estimates showing long-term alternatives with low-to-high ranges in the several-million-dollar range, while the short-term mechanical options were presented with low/high ranges of roughly $771,000–$1.25 million (alternative 4) and $909,000–$1.48 million (alternative 5). Council members emphasized that financing remains unresolved and that lower-cost interim options could be more feasible for the town in the near term.

Environmental and regulatory concerns formed a central thread of the discussion. Professor Spaulding, a coastal scientist from the University of Rhode Island, summarized prior studies (2015–2016) and said dredging would likely improve flushing and water quality but could also increase tidal range near marshes, with consequences for marsh vegetation. "The more you dredge, the more water comes in, the better the flushing, the better the water quality," he said, but he warned that dredging can "increase the tidal range in the vicinity of the marsh," which could worsen stress to marsh plants. Spaulding urged early engagement with state and federal agencies — the Coastal Resources Management Council (CRMC), Department of Environmental Management (DEM), U.S. Army Corps of Engineers and U.S. Fish and Wildlife Service — and recommended additional sediment-transport and hydraulic modeling before final design.

Residents and stakeholder groups largely supported moving toward an interim approach while demanding clearer answers about marsh and property impacts. Jim Vogel of the Narrow River Preservation Association said his group supports an interim dredging step and can help with monitoring. Chester Stewart, a neighboring property owner, said he had to raise his dock and warned that increasing water levels could inundate low-lying basements. Michelle Fonseca described severely degraded water quality and urged action: "The time is now," she said.

Permitting and timing: Foth estimated agency permitting could take roughly six to eight months, subject to agency comments. Consultants recommended pre-application meetings and a collaborative approach with regulators to develop a more permittable design rather than presenting a finalized plan late in the process.

Next steps: Council members and staff said they will continue stakeholder outreach, ask Foth to refine designs and modeling, and return a preferred alternative for a future agenda. No formal motion or vote occurred at the Sept. 16 work session.

The council scheduled follow-up work and additional outreach to state and federal regulators and to local conservation groups before any final action is placed on a consent or regular meeting agenda.