Beach Erosion Reality: Harwich, MA

The Correction: Harwich Has Only One Coastline, and It Faces Nantucket Sound

Harwich is bounded by Brewster to the north, Orleans and Chatham to the east, Dennis to the west, and Nantucket Sound to the south - and that's the whole picture. There is no Cape Cod Bay frontage anywhere in town. This is confirmed independently across four separate sources checked for this page: the town's own harwich-ma.gov "About Harwich" page, Britannica's entry on the town, a real-estate broker's geology writeup of the area, and Wikipedia's Harwich geography section. All four describe the same single-coastline layout. Harwich's three harbors - Wychmere, Saquatucket, and Allen - all open onto Nantucket Sound, not Cape Cod Bay.

That matters because a prior version of the research behind this site attributed a specific Cape Cod Bay accretion claim to Harwich - the idea that its "bay side" was accreting rather than eroding, an outlier worth noting. There is no bay side for that claim to describe. Unlike Cape Cod Bay towns such as Brewster, Dennis, Sandwich, Barnstable, or Yarmouth, Harwich simply doesn't have a Cape Cod Bay-facing shoreline to have an opinion about, let alone an accreting one. This page removes that claim rather than repeating it, and states the correction outright instead of quietly dropping it.

Where the Mix-Up Probably Came From: Chatham's North Beach

It's worth naming the likely source of the error rather than leaving it a mystery. Chatham, Harwich's neighbor to the east, has a shoreline that is genuinely and famously associated with dramatic accretion: its North Beach and South Beach barrier system rebuilt itself in dramatic fashion after the barrier broke in 1987, a well-documented, widely-cited Cape Cod coastal story. It is entirely plausible that an accretion figure describing Chatham's barrier-beach system got attached to the wrong neighboring town somewhere in an earlier research or content pass, and that error then got treated as an established fact about Harwich rather than checked against Harwich's actual geography.

Whatever the exact origin, the fix is the same either way: Chatham's North Beach accretion story belongs to Chatham, not Harwich, and a shoreline claim about one town shouldn't be repeated as fact about its neighbor just because they sit next to each other on a map. This page treats that as a lesson in how these mix-ups happen, not as a reason to import Chatham's number here in some diluted form.

No Town-Specific Erosion Rate Exists for Harwich Either

Correcting the bay-side error doesn't mean a better, Sound-facing number was waiting underneath it. It wasn't. This research found no town-specific USGS shoreline-change rate for Harwich's Nantucket Sound coastline, despite a genuinely thorough search. USGS Circular 1417, the most commonly cited Cape Cod erosion source, covers only Cape Cod National Seashore towns - Provincetown, Truro, Wellfleet, Eastham, and part of Orleans - and Harwich sits well outside the Seashore's boundary, so it simply isn't in that dataset.

The Massachusetts Shoreline Change Project and the state's CZM Coastal Erosion Viewer do cover transects along Harwich's own shoreline, so the underlying survey data exists somewhere in that system. But a plain fetch of those tools in this research could not surface town-filtered, human-readable numbers for Harwich specifically - the data may be there, but it wasn't retrievable in a form this page can responsibly cite. Rather than borrow a number from Chatham, Brewster, or the Outer Cape and present it as if it described Harwich's Sound-facing shoreline, this page states the gap directly: no reliable, town-specific feet-per-year figure for Harwich turned up in this research.

What Is Actually Documented: The Red River Beach Revetment Fight

What Harwich does have is a real, sourced, town-specific coastal-engineering story - just not an annual erosion rate. Red River Beach, Harwich's largest public beach, sits in South Harwich where the Red River's outflow has undermined the shoreline at the beach's east end. Per CapeCod.com's reporting, the town proposed extending an existing revetment there to address that undermining, and the Massachusetts Department of Environmental Protection rejected an earlier version of that revetment-extension proposal in 2012.

The story didn't end with that rejection. The town's Conservation Commission later approved a revised extension - roughly 55 feet of additional revetment - funded through a $100,000 Community Preservation Act appropriation. In the interim, the town tried softer, cheaper measures: sand placement and sandbags as emergency stopgaps. Those reportedly held for only about a year before failing, per CapeCod.com's coverage, which is itself a useful, honest data point about the limits of soft interventions at a site with an active undermining problem, even without a feet-per-year rate attached to it.

No feet-per-year erosion figure was found tied to Red River Beach specifically in this research - the CapeCod.com reporting documents the intervention history (the 2012 rejection, the later approval, the funding, and the soft measures' roughly one-year lifespan) but not a quantified annual rate. That's consistent with the broader pattern on this page: real, sourced, dated facts about what the town has actually done at a specific location, rather than a number invented to fill the gap where a rate would otherwise go.

What This Means If You're Evaluating a Property in Harwich

Put together honestly: Harwich has one coastline, not two - Nantucket Sound only, with no Cape Cod Bay frontage, and an earlier claim to the contrary has been corrected here rather than repeated. No town-specific USGS or state erosion rate exists for that Sound-facing shoreline in this research, and Chatham's genuinely dramatic North Beach accretion story, which may be the source of the original mix-up, belongs to Chatham, not Harwich. What is real and worth knowing is Red River Beach's documented revetment history: a 2012 MassDEP rejection, a later Conservation Commission approval of a roughly 55-foot extension funded by a $100,000 Community Preservation Act appropriation, and emergency soft measures that held only about a year before failing.

Anyone evaluating a specific parcel near Red River Beach, or anywhere else along Harwich's Nantucket Sound shoreline, should not rely on this page, on a number borrowed from Chatham or the Outer Cape, or on the now-corrected bay-side claim. Check the Massachusetts CZM Coastal Erosion Viewer and the USGS Coastal Change Hazards Portal directly for transect-level data, contact the Harwich building or natural-resources department, and consult a licensed coastal engineer before making a purchase decision. Nothing here is engineering advice.