SILENT GROUNDS COLLECTIVE · NONPROFIT EDUCATIONAL ARCHIVE
SGC-ED087 · Research edition September 12, 2026
A collection of documented history, dated images and original record links. Photographs available only at their publishers are labeled separately from locally included images. Unknown dates and conflicting accounts remain visible.
North toward West Rock along memorial canal. West River Memorial Park context, photographed September 13, 2021.
Image credit and source
North at the gated end of Marginal Drive. West River Memorial Park context, photographed September 13, 2021.
Image credit and source
South along Marginal Drive. West River Memorial Park context, photographed September 13, 2021.
Image credit and source
World War I memorial near Barnard Nature Center. West River Memorial Park context, photographed September 13, 2021.
Image credit and source
Southwest from near Barnard Science Center. West River Memorial Park context, photographed September 13, 2021.
Image credit and source
Trees along Ella T. Grasso Boulevard. West River Memorial Park context, photographed September 13, 2021.
Image credit and sourceHorseshoe Lagoon lies west of Marginal Drive and the West River, south of St. Lawrence Cemetery in West Haven. It belongs to the landscape of West River Memorial Park, whose history crosses the municipal boundary with New Haven. The city’s North Allingtown tour describes freshwater runoff mixing with river water and recalls swimming, fishing and skating. This is the lagoon beside the drive, not an amusement-park ride at Savin Rock. [ED087-S01] [ED087-S02]
The wider park emerged through an Olmsted planning process. A 1924 plan survives in the state’s landscape survey. David Casagrande’s researched chronology dates excavation south of St. Lawrence Cemetery to 1926, using material for roadway and island fill, and places completion of Marginal Drive in 1927. These are secondary historical findings grounded in municipal reports; the original reports remain a priority for checking the construction sequence. The later asphalt paving date is a different event from creating the drive. [ED087-S02] [ED087-S03]
Recreation gave the water another role. The Yale educational guide and the municipal tour describe swimming instruction, facilities and other uses. Casagrande’s chronology records swimming facilities in 1944 and later drownings, including two boys in 1964, followed by incomplete attempts to fill the lagoon. These events are treated as part of a documented public-safety and land-use history, without inventing names or extending wider park attendance totals to the lagoon alone. [ED087-S01] [ED087-S03] [ED087-S04]
By 1982 the city’s coastal program evaluated the area through wetlands, flooding, open space and transport. Later records make the drainage connections especially concrete. A Coast Guard determination concerning a November 2009 spill describes oil entering storm drains and reaching the lagoon. That administrative record connects an urban street incident with a waterbody that might otherwise appear separate from surrounding development. Its redactions and internal date discrepancies should be preserved. [ED087-S05] [ED087-S06]
The 2015 watershed assessment describes freshwater drainage, tidal restrictions and the 2012 replacement of three tide gates. The management plan recommends further evaluation and monitoring; recommendations do not establish completed restoration. A 1997 Yale announcement and later reporting on Marginal Drive show recurring community attention. Together these sources make the lagoon a story of design, recreation, altered water flows and stewardship, rather than simply a forgotten scenic place. [ED087-S07] [ED087-S08] [ED087-S09]
The photographs in this edition distinguish actual lagoon views from the wider park context. The 2021 survey photographs show the memorial canal, drive, gates and memorial features; they are not all photographs of Horseshoe Lagoon itself. Original park reports, dated swimming-area photographs and a fuller record of maintenance decisions remain the strongest next sources for expanding the story. [ED087-S02] [ED087-S07]
North toward West Rock along memorial canal. West River Memorial Park context, photographed September 13, 2021.
Read the image and source notes: ED-PARK-L02
North at the gated end of Marginal Drive. West River Memorial Park context, photographed September 13, 2021.
Read the image and source notes: ED-PARK-L03
South along Marginal Drive. West River Memorial Park context, photographed September 13, 2021.
Read the image and source notes: ED-PARK-L04
World War I memorial near Barnard Nature Center. West River Memorial Park context, photographed September 13, 2021.
Read the image and source notes: ED-PARK-L05
Southwest from near Barnard Science Center. West River Memorial Park context, photographed September 13, 2021.
Read the image and source notes: ED-PARK-L06
Trees along Ella T. Grasso Boulevard. West River Memorial Park context, photographed September 13, 2021.
Includes source text where acquired. Source websites require an internet connection. OCR may contain errors; verify names and dates against the scan.
15 catalog entries
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ED087-S01 · Sources & research leads · See individual source date
PDF p7: lagoon location, mixed water sources and remembered recreational uses.
Linked source. The collection provides an original historical summary; the complete record remains with its repository.
Credit: West Haven: Tour 5, North Allingtown. Cite SGC SGC-ED087, ED087-S01, source title, page and URL; accessed 2026-09-12.ED087-S02 · Sources & research leads · See individual source date
2021 inventory, 1924 plan and six individually captioned park-context photographs.
Linked source. The collection provides an original historical summary; the complete record remains with its repository.
Credit: Connecticut SHPO: West River Memorial Park survey. Cite SGC SGC-ED087, ED087-S02, source title, page and URL; accessed 2026-09-12.ED087-S03 · Sources & research leads · See individual source date
Scholarly secondary chronology based on municipal sources; dates not independently verified in original annual reports.
Linked source. The collection provides an original historical summary; the complete record remains with its repository.
Credit: David Casagrande: The Full Circle, 1997. Cite SGC SGC-ED087, ED087-S03, source title, page and URL; accessed 2026-09-12.ED087-S04 · Sources & research leads · See individual source date
Park unit, printed pp37–39: lagoon and park learning activities.
Linked source. The collection provides an original historical summary; the complete record remains with its repository.
Credit: Yale URI: Open Spaces as Learning Places. Cite SGC SGC-ED087, ED087-S04, source title, page and URL; accessed 2026-09-12.ED087-S05 · Sources & research leads · See individual source date
Coastal Planning Area 9; repository labels publication public domain.
Linked source. The collection provides an original historical summary; the complete record remains with its repository.
Credit: NOAA: West Haven municipal coastal program, 1982. Cite SGC SGC-ED087, ED087-S05, source title, page and URL; accessed 2026-09-12.ED087-S06 · Sources & research leads · See individual source date
November 2009 spill and drainage connection; keep redactions and source date discrepancies.
Linked source. The collection provides an original historical summary; the complete record remains with its repository.
Credit: US Coast Guard claim determination, 2010. Cite SGC SGC-ED087, ED087-S06, source title, page and URL; accessed 2026-09-12.ED087-S07 · Sources & research leads · See individual source date
Drainage, historical aerial comparisons and 2012 tide-gate replacement.
Linked source. The collection provides an original historical summary; the complete record remains with its repository.
Credit: West River State of the Watershed, 2015. Cite SGC SGC-ED087, ED087-S07, source title, page and URL; accessed 2026-09-12.ED087-S08 · Sources & research leads · See individual source date
Recommendations and monitoring priorities, not proof of completed work.
Linked source. The collection provides an original historical summary; the complete record remains with its repository.
Credit: West River Watershed Management Plan, 2015. Cite SGC SGC-ED087, ED087-S08, source title, page and URL; accessed 2026-09-12.ED087-S09 · Sources & research leads · See individual source date
Contemporary announcement identifies Horseshoe Lagoon as a cleanup location.
Linked source. The collection provides an original historical summary; the complete record remains with its repository.
Credit: Yale News: West River cleanup, 1997. Cite SGC SGC-ED087, ED087-S09, source title, page and URL; accessed 2026-09-12.ED-PARK-L02 · Photographs · 2021-09-13
North toward West Rock along memorial canal. West River Memorial Park context, photographed September 13, 2021.
Park context; not identified as Horseshoe Lagoon itself. Derived from the survey’s native embedded photograph. Checkbox, photographer Lucy Lawliss, and photograph date visually inspected on PDF page 5. Pages 10–12 captions and images inspected. Display copy optimized for the web with proportional resizing and compression. The linked repository identifies the original image. Reuse: Public domain as checked on survey PDF page 5
Credit: Lucy Lawliss / Red Bridge Group, Connecticut SHPO. Cite SGC SGC-ED087, ED-PARK-L02, source title, page and URL; accessed 2026-09-12.ED-PARK-L03 · Photographs · 2021-09-13
North at the gated end of Marginal Drive. West River Memorial Park context, photographed September 13, 2021.
Park context; not identified as Horseshoe Lagoon itself. Derived from the survey’s native embedded photograph. Checkbox, photographer Lucy Lawliss, and photograph date visually inspected on PDF page 5. Pages 10–12 captions and images inspected. Display copy optimized for the web with proportional resizing and compression. The linked repository identifies the original image. Reuse: Public domain as checked on survey PDF page 5
Credit: Lucy Lawliss / Red Bridge Group, Connecticut SHPO. Cite SGC SGC-ED087, ED-PARK-L03, source title, page and URL; accessed 2026-09-12.ED-PARK-L04 · Photographs · 2021-09-13
South along Marginal Drive. West River Memorial Park context, photographed September 13, 2021.
Park context; not identified as Horseshoe Lagoon itself. Derived from the survey’s native embedded photograph. Checkbox, photographer Lucy Lawliss, and photograph date visually inspected on PDF page 5. Pages 10–12 captions and images inspected. Display copy optimized for the web with proportional resizing and compression. The linked repository identifies the original image. Reuse: Public domain as checked on survey PDF page 5
Credit: Lucy Lawliss / Red Bridge Group, Connecticut SHPO. Cite SGC SGC-ED087, ED-PARK-L04, source title, page and URL; accessed 2026-09-12.ED-PARK-L05 · Photographs · 2021-09-13
World War I memorial near Barnard Nature Center. West River Memorial Park context, photographed September 13, 2021.
Park context; not identified as Horseshoe Lagoon itself. Derived from the survey’s native embedded photograph. Checkbox, photographer Lucy Lawliss, and photograph date visually inspected on PDF page 5. Pages 10–12 captions and images inspected. Display copy optimized for the web with proportional resizing and compression. The linked repository identifies the original image. Reuse: Public domain as checked on survey PDF page 5
Credit: Lucy Lawliss / Red Bridge Group, Connecticut SHPO. Cite SGC SGC-ED087, ED-PARK-L05, source title, page and URL; accessed 2026-09-12.ED-PARK-L06 · Photographs · 2021-09-13
Southwest from near Barnard Science Center. West River Memorial Park context, photographed September 13, 2021.
Park context; not identified as Horseshoe Lagoon itself. Derived from the survey’s native embedded photograph. Checkbox, photographer Lucy Lawliss, and photograph date visually inspected on PDF page 5. Pages 10–12 captions and images inspected. Display copy optimized for the web with proportional resizing and compression. The linked repository identifies the original image. Reuse: Public domain as checked on survey PDF page 5
Credit: Lucy Lawliss / Red Bridge Group, Connecticut SHPO. Cite SGC SGC-ED087, ED-PARK-L06, source title, page and URL; accessed 2026-09-12.ED-PARK-L07 · Photographs · 2021-09-13
Trees along Ella T. Grasso Boulevard. West River Memorial Park context, photographed September 13, 2021.
Park context; not identified as Horseshoe Lagoon itself. Derived from the survey’s native embedded photograph. Checkbox, photographer Lucy Lawliss, and photograph date visually inspected on PDF page 5. Pages 10–12 captions and images inspected. Display copy optimized for the web with proportional resizing and compression. The linked repository identifies the original image. Reuse: Public domain as checked on survey PDF page 5
Credit: Lucy Lawliss / Red Bridge Group, Connecticut SHPO. Cite SGC SGC-ED087, ED-PARK-L07, source title, page and URL; accessed 2026-09-12.