Beach Erosion in Monmouth Beach, New Jersey: What Is Confirmed and What Is Not
This page will not state a current beach-erosion rate for Monmouth Beach, New Jersey, in feet per year or any other unit, because no such figure specific to this town was independently confirmed during the research behind this page. What can be said honestly is that Monmouth Beach is an unusually water-heavy borough, just 2.07 square miles total, only 1.04 square miles of it land and 1.03 square miles water, meaning water accounts for 49.81 percent of the town's entire footprint, with the Atlantic Ocean to the east and the Shrewsbury River to the northwest. That geography is also why a historic regional seawall, built in the 1870s by neighboring Sea Bright, physically extends south into Monmouth Beach, a real and relevant piece of shoreline infrastructure discussed below on its own terms. For a current, professionally surveyed erosion rate, go directly to the New Jersey Department of Environmental Protection (NJDEP) and the U.S. Army Corps of Engineers, and to a licensed professional, not to this page or any other general real-estate site.
What This Page Will Not Do: Invent an Erosion Rate
Real-estate content about Jersey Shore towns often states a specific erosion rate, in feet of shoreline lost per year, as though it were a settled, current fact, or borrows a seawall or storm-damage figure from a neighboring town's own separate history. For Monmouth Beach specifically, no current erosion-rate figure was found during the research behind this page, and this page will not carry over Bay Head's separate 1882 stone rubble seawall and its figures, or reopen Sea Bright's own dedicated debate over funding the gaps in its section of the shared seawall, as though either belonged to Monmouth Beach's own story.
What this page offers instead is an honest look at what is actually confirmed about Monmouth Beach's own relationship with the ocean: a borough where water makes up nearly half the total land area, a documented storm history from Hurricane Sandy, and the real, physical presence of a 150-year-old regional seawall extending into town from Sea Bright. None of that is a substitute for a current, professionally surveyed erosion rate, but all of it is real, sourced, and directly relevant to anyone trying to understand this specific community's exposure to the Atlantic.
A 2.07-Square-Mile Borough, 49.81 Percent Water
Monmouth Beach covers a total of just 2.07 square miles, split between 1.04 square miles of land and 1.03 square miles of water, meaning water accounts for 49.81 percent of the borough's entire footprint, one of the highest water percentages of any New Jersey market covered on this site. The Atlantic Ocean sits directly to the east and the Shrewsbury River runs along the northwest, placing the town on a narrow strip of land squeezed between ocean and river in a way that is common along this stretch of the Jersey Shore but unusually pronounced here.
The area was first settled in 1668, making it one of the oldest-settled communities on this part of the coast, and it grew as a distinct community following the arrival of the Long Branch and Sea Shore Railroad before incorporating as its own borough, from portions of Ocean Township, on March 9, 1906. Population has moved with the broader arc of shore-town cycles since: 3,595 residents at the 2000 census, down 8.8 percent to 3,279 by 2010, then down another 3.2 percent to 3,174 by 2020, alongside a rising median age and a housing stock with notable seasonal vacancy. That long settlement history and nearly even split between land and water are the direct backdrop for why the shoreline itself, including a regional seawall built well before modern engineering standards, remains central to how this town relates to the Atlantic today.
The Regional Seawall: Built by Sea Bright, Extending Into Monmouth Beach
The same historic seawall documented in neighboring Sea Bright's own research, dating to the 1870s, running approximately 5 miles long, and standing 18 feet high overall, physically extends south into Monmouth Beach. It is a genuinely different, older structure from Bay Head's separate 1882 stone rubble seawall used elsewhere on the Jersey Shore, and its presence here is a real, physical fact of Monmouth Beach's shoreline, not a borrowed figure from a town that does not touch this one.
This page notes that shared structure briefly and factually, as relevant infrastructure for anyone evaluating erosion exposure along this stretch of coast, without re-running Sea Bright's own dedicated, unresolved debate over funding the remaining gaps in its section of the wall. That funding fight, and the named officials and advocates involved in it, is Sea Bright's own story to tell; what matters for Monmouth Beach is simply that this century-and-a-half-old seawall exists along part of its own shoreline, built and administered as regional coastal infrastructure rather than a purely local project.
Hurricane Sandy: Documented, Without an Invented Total
Monmouth Beach was documented as recently affected by Hurricane Sandy in October 2012, with damage to multiple homes in the borough. No itemized dollar total for that damage, and no confirmed count of homes affected beyond the general description, was found during the research behind this page, and this page does not invent a specific figure to fill that gap.
What can be said is that a borough this narrow, with water making up nearly half its total area and the Atlantic directly to its east, is the kind of geography where a storm like Sandy causes real, documented harm, consistent with the damage recorded here. Anyone evaluating storm risk for a specific Monmouth Beach property should ask for that property's own flood and storm history directly, rather than relying on a borough-wide description alone.
Why a Shared Seawall Is Not a Substitute for an Erosion Answer
It would be easy to read the presence of a 150-year-old regional seawall, and the documented Hurricane Sandy damage, as though they together added up to a specific, current erosion-rate figure for Monmouth Beach's own beach. That is not what the documented record supports. A seawall is a piece of engineered shoreline infrastructure built and maintained across a regional footprint; a beach-erosion rate is a separate, physically measured question about how much sand a specific stretch of coast is gaining or losing over time. The two are related, in that both concern the same shoreline, but they are not the same question, and this page does not blend them into a single invented figure.
Monmouth Beach's 2.07-square-mile, 49.81-percent-water footprint, its long 1668 settlement history, the regional seawall extending into town from Sea Bright, and its documented but not itemized Hurricane Sandy damage are all real, documented parts of understanding this specific community today. None of them, individually or combined, is a substitute for a current, professionally surveyed erosion rate, a current FEMA flood-zone determination, or a current Army Corps of Engineers or NJDEP assessment of this specific stretch of coastline.
Where to Get a Real, Current Erosion Answer
Beach erosion and shoreline management on the New Jersey coast are handled at the state and federal level, not by a single borough acting alone, even one bordered by as much water as Monmouth Beach. The New Jersey Department of Environmental Protection is the state agency responsible for coastal management and beach-replenishment program oversight along the Jersey Shore, including Monmouth County's oceanfront communities. The U.S. Army Corps of Engineers is the federal agency most directly involved in the region's shoreline-protection projects, including the seawall that runs from Sea Bright into Monmouth Beach, and its current published materials, not a real-estate page, are the right source for that infrastructure's up-to-date status and specifications.
A prospective renter, buyer, or relocating resident should ask NJDEP and the Army Corps of Engineers directly for current erosion-rate data for this specific stretch of coast, ask Monmouth County for any county-level coastal-engineering records, get a current flood-zone determination from FEMA's Flood Map Service Center, and get a current insurance quote from a licensed agent familiar with coastal Monmouth County property before budgeting a move to this borough.
Adding It Up: What Is Real, and What We Will Not Invent
What is confirmed and real here: Monmouth Beach covers 2.07 square miles total, 1.04 square miles land and 1.03 square miles water (49.81 percent water), one of the highest water percentages of any New Jersey market covered on this site, with the Atlantic Ocean to the east and the Shrewsbury River to the northwest; the area was first settled in 1668 and incorporated as its own borough from portions of Ocean Township on March 9, 1906; a regional seawall dating to the 1870s, running about 5 miles and standing 18 feet high overall, extends into Monmouth Beach from neighboring Sea Bright; and the borough was documented as recently affected by Hurricane Sandy, with damage to multiple homes. Monmouth Beach is a distinct market from Sea Bright, Bay Head, and every other Jersey Shore town already covered on this site, whose own seawall-funding debates, erosion figures, and storm-damage totals have not been carried over to this page.
What we could not find, and will not fill in with an invented figure: a current beach-erosion rate for Monmouth Beach in any unit, and a confirmed itemized dollar total or home count for Hurricane Sandy damage beyond the documented description of multiple affected homes. Get current erosion, seawall, and coastal-construction information directly from the New Jersey Department of Environmental Protection and the U.S. Army Corps of Engineers, a current flood-zone determination from FEMA's Flood Map Service Center, and a current insurance quote from a licensed agent before budgeting a move. Nothing on this page is legal, engineering, or financial advice.
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Get a Free Agent Referral →Independent research. No ads. No sponsored listings. Data drawn from research on Monmouth Beach, New Jersey, a Monmouth County borough first settled in 1668 and incorporated from portions of Ocean Township on March 9, 1906, covering a total of 2.07 square miles (1.04 square miles land, 1.03 square miles water, 49.81 percent water) with the Atlantic Ocean to the east and the Shrewsbury River to the northwest, including: the regional seawall dating to the 1870s, running approximately 5 miles and standing 18 feet high overall, that extends into Monmouth Beach from neighboring Sea Bright (Monmouth Beach's own dedicated seawall-funding debate is not covered here, as that policy fight belongs to Sea Bright's own documented record); and the borough's documented status as recently affected by Hurricane Sandy in October 2012, with damage to multiple homes and no confirmed itemized dollar total. Monmouth Beach is distinct from Sea Bright and Bay Head, whose own seawall figures, funding debates, and erosion data are not carried over here, and from every other Jersey Shore market covered on this site. No confirmed current (2026) beach-erosion rate and no confirmed itemized Hurricane Sandy damage total were independently confirmed this research pass, and none is invented here. Get current erosion, seawall, and coastal-construction information from the New Jersey Department of Environmental Protection and the U.S. Army Corps of Engineers, a current flood-zone determination from FEMA's Flood Map Service Center, and a current insurance quote from a licensed agent before budgeting a purchase. Nothing on this page is legal, engineering, or financial advice.