Marshfield, MA Hurricane & Storm Risk: What the Town's Own Record Shows

January and March 2018: Back-to-Back Nor'easters, One Well-Documented

The winter of 2018 hit Marshfield twice within about six weeks. The first storm, early January 2018's so-called "bomb cyclone" (meteorologists' name for Winter Storm Grayson), is widely documented as a regionally severe event — record coastal flooding was reported across Massachusetts Bay communities by outlets including Slate, Boston Magazine, and WGBH. This page will not pretend to know more than that about Marshfield specifically: a Marshfield-only damage figure for the January storm did not turn up in this research, and the honest framing is that it was part of the same back-to-back nor'easter pattern that hit the town harder the following March, not a separately quantified Marshfield event on its own.

The March 2018 storm — Winter Storm Riley, which arrived on March 2 and was reported on by WBUR two days later — is Marshfield's best-documented storm account of the two. Per WBUR, Green Harbor, the low-lying area near Dyke Road, and Brant Rock both flooded significantly, with major surge reaching Beach Street. Homeowners described re-boarding windows after plywood had simply been ripped off by the waves, and one described the flooding as routine rather than exceptional: "I know that it happens every storm surge... this is the second time this year." Regionally, Riley caused at least seven deaths across New England and left more than two million homes without power, prompting Governor Charlie Baker to declare a state of emergency. It is also the same storm that broke open Marshfield's own Bay Avenue seawall in Green Harbor, covered next.

The Bay Avenue Seawall: A 105-Foot Failure, Rebuilt by 2020

The clearest, most specific piece of Marshfield's 2018 storm record comes not from a news account but from an engineering firm's own project page. Tighe & Bond, which designed the permanent repair, states that a 105-linear-foot section of the seawall on Bay Avenue in Green Harbor failed during Winter Storm Riley in March 2018 due to storm-surge wave overtopping, heavy wave-driven beach scour, and the loss of soil under and behind the wall from wave action. Emergency measures — steel plates and armor stone — held the line in the meantime.

The permanent fix, per the same source, used a sheet-pile foundation with an anti-scour cutoff wall, removed the temporary emergency materials, reset the revetment, and cast a new seawall profile with a wave recurve atop a reinforced concrete footing. Construction was completed in 2020 — a genuinely finished, not merely proposed, piece of coastal infrastructure, and one directly traceable to a specific, named storm.

January 29, 2022: The Brant Rock Esplanade Becomes "Part of the Ocean"

Four years after Riley, a blizzard on January 29, 2022 delivered Marshfield's next well-documented flood event. Patch's reporting from that Saturday described the Brant Rock esplanade as appearing to be "part of the ocean," with multiple streets "completely underwater" and cars towed from near the esplanade overnight. Ahead of the storm, the town reinforced a 650-foot seawall at Brant Rock — a preventive measure that suggests the town already understood which stretch of coastline was most exposed. More than 115,000 Massachusetts residents were without power as of 9 a.m. that morning, more than two feet of snow was forecast in places, and Marshfield's own Fire Department urged residents to stay off the roads while the storm played out.

Read together, the March 2018 and January 2022 events describe the same basic pattern twice: Green Harbor and Brant Rock take on water first and worst, and the town's response — seawall reinforcement ahead of a forecast storm, a completed seawall rebuild after the last one failed — has been reactive but real. Neither event, on its own, is a hurricane; both are proof that Marshfield does not need one to flood.

Ocean Bluff: A Live Fight Over a 1930s Revetment and Whether to Retreat

The most emotionally charged, and least resolved, part of Marshfield's coastal story is unfolding right now at Ocean Bluff. Per an NBC Boston investigative report, the neighborhood's coastal revetment — a barrier of large boulders dating to the 1930s — has deteriorated significantly: storm surge has shifted the boulders out of place, water is seeping in behind the barrier, and sinkholes have begun forming as sand erodes out from underneath. State Route 139 runs directly along this stretch of coast, and residents worry that continued damage could eventually reach the highway itself and the gas and utility lines beneath it.

A consultant from the Woods Hole Group estimated that 12 to 15 homes along Ocean Bluff will become newly vulnerable to flooding every year as the revetment continues to fail, and proposed a voluntary buyout program that would let homeowners relocate over 30 years, with the acquired lots cleared and left as natural storm buffers — estimated at $7.6 million to acquire the properties. The Town Administrator, Michael Maresco, has said the town is instead studying repairs to the revetment itself, which could cost as much as $30 million, and pushed back on a retreat-only framing: "We aren't throwing up our hands and surrendering." Some emergency repair work had already taken place before the report (referenced only as having happened "in November," without a specified year).

Residents are genuinely split. Homeowner Dan Fennelly argued for fixing the revetment rather than walking away from it: "If nothing is done to the revetment, we feel they are all in danger." Veterinarian Meaghan Desmond, weighing a buyout that could eventually reach her own property, put it more starkly: "It's scary to me that someone is going to come in and take my home." Neither side has won this argument yet. Anyone evaluating property at or near Ocean Bluff should treat this as an open, multi-year policy fight, not a settled outcome, and should re-confirm the current status of both the buyout proposal and the repair-cost estimate directly with the Town of Marshfield before relying on either figure.

Sunrise Beach and the 2025 Nourishment Project: Two Different Answers to Erosion

Marshfield is currently running two very different erosion conversations at once, and it is worth keeping them separate. At Sunrise Beach, resident Peter Howard presented to the Select Board on July 28, 2025, arguing that 1970s-era removal of rock and cobble from the beach — extracted for crushing, reportedly for use at the Pilgrim Nuclear Power Plant — stripped away the natural wave-energy absorption that once protected the shoreline: "We used to have sandbars, tide pools, baby flounder... now it's just flat." He proposed boulder and cobble replenishment as a fix, citing a $600,000 Salisbury Beach nourishment project as a rough cost comparison. DPW Superintendent Sean Patterson and Town Planner Greg Guimond responded by pointing to state and federal permitting hurdles, and to a past nourishment effort that was blocked when oceanfront property owners would not sign the required easements. As of this reporting, no town funding has been allocated to Sunrise Beach — it is a real, current, unresolved debate, not a funded project.

Rexhame Beach, Winslow Avenue Town Beach, and Bay Avenue in Green Harbor tell a different, already-completed story. Marshfield and Duxbury jointly received a combined $3.2 million Massachusetts Coastal Zone Management (CZM) Coastal Resiliency grant for a two-town, 480,640-cubic-yard, 5,150-linear-foot nourishment project; Marshfield's own share of the FY2025 funded phase was 30,400 cubic yards across 720 linear feet, built as a 40-foot-wide berm fronting eleven Marshfield properties. Permitting ran from 2020 to 2023, and construction actually happened between February 10 and March 14, 2025, with a final presentation to the Select Board on June 16, 2025. The contractor was SumCo, with the Woods Hole Group serving as environmental consultant. Between the two projects, Marshfield is simultaneously debating an unfunded fix at one beach and finishing a funded one at three others — a useful reminder to check the status of any specific stretch of shoreline rather than assuming "erosion work" means the same thing town-wide.

What About 1938, Hurricane Carol, and Sandy? Honest Gaps in Marshfield's Record

It would be easy to assume that a town with this much documented 2018-2025 storm and erosion detail must also have a rich record of its famous 20th-century hurricanes. It does not, at least not in what this research could find. The 1938 New England hurricane — the most destructive hurricane in the region's recorded history, with a wind gust over 180 miles per hour recorded at the Blue Hills Observatory and severe, well-documented flooding in Falmouth and New Bedford — has no Marshfield-specific damage account, dollar figure, or named-street effect in the sources checked here. The same is true of Hurricane Carol, which made landfall in Rhode Island on August 31, 1954, killed at least 17 people statewide there, and caused roughly $460 million in damage across New England overall, with Massachusetts' own worst-documented Carol-era damage concentrated around Somerset and New Bedford — not Marshfield.

Hurricane Sandy in 2012 follows the same pattern. Sandy's major, well-documented damage fell on New York and New Jersey; by the time it reached southern New England as a weakening post-tropical system, no Marshfield-specific flood depth or damage account turned up in this research. None of this means Marshfield was spared — a town whose Green Harbor and Brant Rock neighborhoods flood in ordinary nor'easters plausibly took some damage from all three storms — but plausible inference is not a sourced figure, and this page will not present one as fact where none was found.

FEMA Status, the Dike, the Jetty, and a New Research Institute

Marshfield participates in FEMA's Community Rating System (CRS) at a Class 7 rating, which the town's own site says earns residents a 15 percent discount on mandatory flood insurance premiums, reflecting floodplain-management practices that exceed the National Flood Insurance Program's federal minimums. The town maintains its own Floodplain Bylaw with construction standards above the federal floor, and its Building Department issues FEMA elevation certificates, dry-floodproofing certificates, and V-Zone design certificates directly.

Several current infrastructure projects sit behind that CRS rating. The Plymouth Avenue Pump Station, which sits in FEMA Flood Zone AE 9, was recently upgraded to protection elevation 13 — above the federal minimum — with concrete barriers, deployable flood shields, and underground infrastructure reaching 35 feet below grade, designed to keep the town's wastewater system operational even in a 500-year flood event. The Green Harbor Jetty Realignment, budgeted at $10 million and developed in planning with the U.S. Army Corps of Engineers after roughly a decade of back-and-forth meetings, addresses structural damage and navigation problems caused by uneven jetty lengths. A separate Dike Road reconstruction study is aimed at protecting roughly 500 homes in Green Harbor's low-lying areas, with the North and South Rivers Watershed Association involved on funding and expertise. And a newer, forward-looking effort — the Atlantic Resiliency Innovation Institute, a collaboration involving Northeastern University, a Marshfield Coastal Hazard Lab, and a Marshfield Coastal Academy workforce-training program — is deploying a real-time environmental-monitoring buoy network with Marshfield among the first operational sites, tied to the state's "blue economy" Seaport Economic Council initiative. All of these are genuinely current, multi-year efforts; anyone relying on a specific project's status should reconfirm it directly with the Town of Marshfield rather than treat any of these as finished.

Practical Steps Before You Buy Near Marshfield's Coast

Given how concentrated Marshfield's documented flood and erosion history is in Green Harbor, Brant Rock, and Ocean Bluff specifically — rather than spread evenly across the whole town — exactly where a property sits matters enormously here. Before buying anything in or near these areas, pull the current FEMA flood-zone designation for the specific parcel directly from FEMA's Map Service Center (msc.fema.gov), ask the Town of Marshfield's Building Department whether the property has an elevation certificate or dry-floodproofing certificate on file, and get a written flood-insurance quote from a Massachusetts-licensed agent rather than assuming the town's CRS Class 7 discount or any general resilience spending automatically applies to that address.

If the property is at or near Ocean Bluff, ask directly, in writing if possible, whether it falls within the area the Woods Hole Group identified as becoming vulnerable and whether it could eventually be affected by either the proposed buyout program or a future revetment-repair betterment assessment — both are live, unresolved questions as of this research, not settled facts. And for evacuation planning generally, confirm the property's hurricane evacuation zone using the Massachusetts Emergency Management Agency's (MEMA) statewide "Know Your Zone" map rather than assuming a neighboring address shares the same zone. Nothing on this page substitutes for official guidance from the Town of Marshfield, FEMA, or MEMA.