Portsmouth Hurricane Risk: The Night the Sakonnet River Took Island Park
Most coastal towns talk about hurricane risk in the abstract -- wind speeds, insurance categories, evacuation zones. Portsmouth, Rhode Island has something almost no other market on this site has: a real, dated, name-and-place hurricane story with a body count. On September 21, 1938, a wall of water roughly 12 feet high surged up the Sakonnet River and permanently destroyed Island Park, a trolley-accessible amusement park that had operated in Portsmouth since 1897. Eighteen people died at the park that day. This page tells that story properly -- not as a footnote -- and then lays out what Rhode Island's own current planning data says about Portsmouth's storm-surge and sea-level-rise exposure today. It does not invent evacuation zones, shelter locations, or current storm names beyond what is confirmed below; for that, go directly to the Town of Portsmouth's own emergency management office and the Rhode Island Emergency Management Agency.
A Trolley Park on the Sakonnet: Island Park, 1897 to 1938
Before it was just a neighborhood name, Island Park was an actual amusement park -- one of the trolley parks that sprang up across New England at the turn of the century, built to give streetcar companies a reason for people to ride the line on weekends. It opened in 1897, reachable via the Newport-Fall River Street Railway, on the Portsmouth shore of the Sakonnet River. In 1925 the Cashman family purchased the park and renamed it Cashman's Park, expanding its attractions through the following decade.
What they built was genuinely substantial for a small-town amusement park. Island Park featured two documented carousels -- one built by the Barker family in 1898, another by the celebrated carousel maker Charles I. D. Looff in 1905 -- plus a roller coaster known as "The Bullet," built in 1926. There was a dance hall and ballroom that hosted major touring bands, a fun house nicknamed "Brownie's 101 Troubles," a shore dinner hall, tethered hot-air-balloon rides, boat rentals, inter-island swimming races, a shooting gallery, and acrobatic performances. Dance marathons were a regular draw, with one documented at 111 hours. This was not a modest boardwalk attraction -- it was a genuine regional destination, and for four decades it was Portsmouth's answer to the question of where you took your family on a summer weekend.
Fire, Storm, and Fire Again: A Park That Had Already Survived Disaster Three Times
Island Park's story was not without trouble well before 1938. The park suffered a devastating fire in 1927, storm damage to the roller coaster in 1929, and a second dance-hall fire in 1933. Each time, it rebuilt and kept operating. That resilience is part of what makes the ending of the story land as hard as it does: this was a park that had already weathered a decade of real disasters and come back from each one -- until the storm that finally didn't leave anything to rebuild.
September 21, 1938: The Great New England Hurricane and a 12-Foot Wall of Water
The Great New England Hurricane of 1938 struck the region on September 21 of that year, and in Portsmouth specifically it is remembered for one devastating image: a wall of water roughly 12 feet high surging up the Sakonnet River and slamming into Island Park. The storm killed roughly 600 people across the region -- and 18 of those deaths happened specifically at Island Park, a sobering, dated, local casualty figure distinct from the broader regional toll.
The park did not reopen. Fire, a second fire, and storm damage had all failed to end Island Park across more than a decade of trouble -- the 1938 hurricane is what finally did. A trolley park that had drawn crowds to the Sakonnet River shore for forty-one years was gone in a single afternoon.
A Second Portsmouth Data Point: Green Animals Topiary Garden's Own 1938 Story
Island Park is not the only documented Portsmouth institution carrying a scar from that same storm. Per Wikipedia's own account of Green Animals Topiary Garden -- the historic 7-acre estate on Narragansett Bay that today is managed by the Preservation Society of Newport County -- George Mendonça joined the garden's staff after 1938 hurricane damage there, later becoming co-creator of its topiary menagerie and remaining as grounds manager until 1985. That is a smaller, quieter data point than the destruction of an entire amusement park, but it corroborates the same underlying fact from a second, independent Portsmouth source: the September 1938 hurricane left a real, documented mark on this specific town, not just on the region in general.
What Island Park Looks Like Today
Today, Island Park survives only as the name of a neighborhood and beach area in Portsmouth. No trace of the amusement park itself remains as an operating attraction -- no carousel, no roller coaster, no dance hall. If you drive through Island Park today expecting to find some remnant of the trolley-park era, you will not find one; the name is what is left, not the place it once described. That gap between what the name used to mean and what is actually there now is, in its own way, the clearest evidence of how completely the 1938 hurricane ended that chapter of Portsmouth's history.
Current Storm-Surge and Sea-Level-Rise Risk, Per Rhode Island's Own Planning Data
Setting the 1938 story aside, Rhode Island's Division of Statewide Planning has published current, town-specific projections for Portsmouth that are worth taking seriously on their own terms. Under a combined scenario pairing a 100-year storm with 7 feet of sea-level rise, the state projects approximately 37 miles of roadway inundation in Portsmouth -- a figure that ranks Portsmouth the 7th most vulnerable town statewide for that combined storm-surge-and-sea-level-rise scenario.
On bridges specifically, the state's data flags the Sakonnet River Bridge -- the same river that carried the 1938 surge into Island Park -- with "-84 inches of freeboard" under a 7-foot sea-level-rise scenario, meaning the bridge would have substantially less clearance than it needs under that projection. Portsmouth ranks 13th statewide for combined bridge vulnerability to sea-level-rise and storm-surge threats. These are the state's own planning figures, not this page's editorializing, and they describe projected risk under specific modeled scenarios -- not a prediction of when or whether any particular storm will occur.
What This Page Cannot Tell You
This page does not state current hurricane evacuation zones, shelter locations, or the name and date of any current-year storm, because that information changes and belongs with the agencies responsible for it, not with a historical overview like this one. For current, authoritative evacuation-zone maps, shelter information, and storm preparedness guidance for Portsmouth, go directly to the Town of Portsmouth's own emergency management page and the Rhode Island Emergency Management Agency (RIEMA).
Nothing here is emergency-management, insurance, or engineering advice. The 1938 Island Park story and the Green Animals corroboration are historical record; the roadway-inundation and bridge-freeboard figures are the state's own current planning projections under specific modeled scenarios. Confirm current flood-zone designation, evacuation status, and insurance implications for any specific Portsmouth property directly with the Town of Portsmouth, RIEMA, and a licensed insurance professional.
Ready to talk to a local Portsmouth, RI agent?
Get a Free Agent Referral →Independent research. No ads. No sponsored listings. The Island Park history (its 1897 opening as a trolley park served by the Newport-Fall River Street Railway, the Cashman family's 1925 purchase and renaming to Cashman's Park, its two carousels built by the Barker family in 1898 and by Charles I. D. Looff in 1905, "The Bullet" roller coaster built in 1926, its dance hall, fun house, shore dinner hall, dance marathons including one documented at 111 hours, the 1927 fire, 1929 storm damage, and 1933 dance-hall fire, and its final destruction in the September 21, 1938 hurricane by a roughly 12-foot wall of water up the Sakonnet River, with roughly 600 regional deaths and 18 deaths specifically at Island Park) is sourced to East Bay RI reporting. The corroborating Green Animals Topiary Garden detail -- George Mendonça joining the garden's staff after 1938 hurricane damage and later becoming co-creator of its topiary menagerie, serving as grounds manager until 1985 -- is sourced to Wikipedia's own Green Animals Topiary Garden entry. Current storm-surge and sea-level-rise figures (approximately 37 miles of projected roadway inundation under a combined 100-year-storm-plus-7-foot-sea-level-rise scenario, ranking Portsmouth 7th most vulnerable town statewide for that scenario; the Sakonnet River Bridge's "-84 inches of freeboard" under a 7-foot sea-level-rise scenario; and Portsmouth's 13th-place statewide ranking for combined bridge vulnerability) are sourced to the Rhode Island Division of Statewide Planning's own Portsmouth fact sheet (planning.ri.gov). This page deliberately does not state current hurricane evacuation zones, shelter locations, or current-year storm names or dates beyond what is confirmed above -- for that, go directly to the Town of Portsmouth's own emergency management office and the Rhode Island Emergency Management Agency (RIEMA). Nothing on this page is emergency-management, insurance, or engineering advice.