Horseshoe Lagoon
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.

id: ED087-S01
title: West Haven: Tour 5, North Allingtown
kind: Sources & research leads
date: See individual source date
institution: Horseshoe Lagoon
summary: PDF p7: lagoon location, mixed water sources and remembered recreational uses.
url: https://www.cityofwesthaven.com/DocumentCenter/View/3441/Tour-5---North-Allingtown-PDF
credit: West Haven: Tour 5, North Allingtown
notes: Linked source. The collection provides an original historical summary; the complete record remains with its repository.
file: 
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: 
document_file: 

id: ED087-S02
title: Connecticut SHPO: West River Memorial Park survey
kind: Sources & research leads
date: See individual source date
institution: Horseshoe Lagoon
summary: 2021 inventory, 1924 plan and six individually captioned park-context photographs.
url: https://portal.ct.gov/-/media/DECD/Historic-Preservation/01_Programs_Services/Olmsted-Survey-Forms/New-Haven-County/05315_New-Haven_West-River-Memorial-Park.pdf
credit: Connecticut SHPO: West River Memorial Park survey
notes: Linked source. The collection provides an original historical summary; the complete record remains with its repository.
file: 
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: 
document_file: 

id: ED087-S03
title: David Casagrande: The Full Circle, 1997
kind: Sources & research leads
date: See individual source date
institution: Horseshoe Lagoon
summary: Scholarly secondary chronology based on municipal sources; dates not independently verified in original annual reports.
url: https://www.researchgate.net/publication/322298069_The_full_circle_A_historical_context_for_urban_salt_marsh_restoration
credit: David Casagrande: The Full Circle, 1997
notes: Linked source. The collection provides an original historical summary; the complete record remains with its repository.
file: 
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: 
document_file: 

id: ED087-S04
title: Yale URI: Open Spaces as Learning Places
kind: Sources & research leads
date: See individual source date
institution: Horseshoe Lagoon
summary: Park unit, printed pp37–39: lagoon and park learning activities.
url: https://uri.yale.edu/sites/default/files/publication/files/osalp-park-unit_2.pdf
credit: Yale URI: Open Spaces as Learning Places
notes: Linked source. The collection provides an original historical summary; the complete record remains with its repository.
file: 
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: 
document_file: 

id: ED087-S05
title: NOAA: West Haven municipal coastal program, 1982
kind: Sources & research leads
date: See individual source date
institution: Horseshoe Lagoon
summary: Coastal Planning Area 9; repository labels publication public domain.
url: https://repository.library.noaa.gov/view/noaa/13919
credit: NOAA: West Haven municipal coastal program, 1982
notes: Linked source. The collection provides an original historical summary; the complete record remains with its repository.
file: 
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: 
document_file: 

id: ED087-S06
title: US Coast Guard claim determination, 2010
kind: Sources & research leads
date: See individual source date
institution: Horseshoe Lagoon
summary: November 2009 spill and drainage connection; keep redactions and source date discrepancies.
url: https://www.uscg.mil/Portals/0/npfc/Claims/2010/910074-001%20RC%20Paid_Redacted.pdf
credit: US Coast Guard claim determination, 2010
notes: Linked source. The collection provides an original historical summary; the complete record remains with its repository.
file: 
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: 
document_file: 

id: ED087-S07
title: West River State of the Watershed, 2015
kind: Sources & research leads
date: See individual source date
institution: Horseshoe Lagoon
summary: Drainage, historical aerial comparisons and 2012 tide-gate replacement.
url: https://portal.ct.gov/-/media/DEEP/water/watershed_management/wm_plans/west/westrivertechmemo1pdf.pdf
credit: West River State of the Watershed, 2015
notes: Linked source. The collection provides an original historical summary; the complete record remains with its repository.
file: 
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: 
document_file: 

id: ED087-S08
title: West River Watershed Management Plan, 2015
kind: Sources & research leads
date: See individual source date
institution: Horseshoe Lagoon
summary: Recommendations and monitoring priorities, not proof of completed work.
url: https://portal.ct.gov/-/media/deep/water/watershed_management/wm_plans/westriverwbp.pdf
credit: West River Watershed Management Plan, 2015
notes: Linked source. The collection provides an original historical summary; the complete record remains with its repository.
file: 
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: 
document_file: 

id: ED087-S09
title: Yale News: West River cleanup, 1997
kind: Sources & research leads
date: See individual source date
institution: Horseshoe Lagoon
summary: Contemporary announcement identifies Horseshoe Lagoon as a cleanup location.
url: https://news.yale.edu/1997/08/22/focus-new-haven-begins-west-river-cleanup
credit: Yale News: West River cleanup, 1997
notes: Linked source. The collection provides an original historical summary; the complete record remains with its repository.
file: 
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: 
document_file: 

id: ED-PARK-L02
title: North toward West Rock along memorial canal
kind: Photographs
date: 2021-09-13
institution: Horseshoe Lagoon
summary: North toward West Rock along memorial canal. West River Memorial Park context, photographed September 13, 2021.
url: https://portal.ct.gov/-/media/DECD/Historic-Preservation/01_Programs_Services/Olmsted-Survey-Forms/New-Haven-County/05315_New-Haven_West-River-Memorial-Park.pdf#page=10
credit: Lucy Lawliss / Red Bridge Group, Connecticut SHPO
notes: 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
file: images/ED-PARK-L02.jpg
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: 
document_file: 

id: ED-PARK-L03
title: North at the gated end of Marginal Drive
kind: Photographs
date: 2021-09-13
institution: Horseshoe Lagoon
summary: North at the gated end of Marginal Drive. West River Memorial Park context, photographed September 13, 2021.
url: https://portal.ct.gov/-/media/DECD/Historic-Preservation/01_Programs_Services/Olmsted-Survey-Forms/New-Haven-County/05315_New-Haven_West-River-Memorial-Park.pdf#page=10
credit: Lucy Lawliss / Red Bridge Group, Connecticut SHPO
notes: 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
file: images/ED-PARK-L03.jpg
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: 
document_file: 

id: ED-PARK-L04
title: South along Marginal Drive
kind: Photographs
date: 2021-09-13
institution: Horseshoe Lagoon
summary: South along Marginal Drive. West River Memorial Park context, photographed September 13, 2021.
url: https://portal.ct.gov/-/media/DECD/Historic-Preservation/01_Programs_Services/Olmsted-Survey-Forms/New-Haven-County/05315_New-Haven_West-River-Memorial-Park.pdf#page=11
credit: Lucy Lawliss / Red Bridge Group, Connecticut SHPO
notes: 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
file: images/ED-PARK-L04.jpg
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: 
document_file: 

id: ED-PARK-L05
title: World War I memorial near Barnard Nature Center
kind: Photographs
date: 2021-09-13
institution: Horseshoe Lagoon
summary: World War I memorial near Barnard Nature Center. West River Memorial Park context, photographed September 13, 2021.
url: https://portal.ct.gov/-/media/DECD/Historic-Preservation/01_Programs_Services/Olmsted-Survey-Forms/New-Haven-County/05315_New-Haven_West-River-Memorial-Park.pdf#page=11
credit: Lucy Lawliss / Red Bridge Group, Connecticut SHPO
notes: 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
file: images/ED-PARK-L05.jpg
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: 
document_file: 

id: ED-PARK-L06
title: Southwest from near Barnard Science Center
kind: Photographs
date: 2021-09-13
institution: Horseshoe Lagoon
summary: Southwest from near Barnard Science Center. West River Memorial Park context, photographed September 13, 2021.
url: https://portal.ct.gov/-/media/DECD/Historic-Preservation/01_Programs_Services/Olmsted-Survey-Forms/New-Haven-County/05315_New-Haven_West-River-Memorial-Park.pdf#page=12
credit: Lucy Lawliss / Red Bridge Group, Connecticut SHPO
notes: 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
file: images/ED-PARK-L06.jpg
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: 
document_file: 

id: ED-PARK-L07
title: Trees along Ella T. Grasso Boulevard
kind: Photographs
date: 2021-09-13
institution: Horseshoe Lagoon
summary: Trees along Ella T. Grasso Boulevard. West River Memorial Park context, photographed September 13, 2021.
url: https://portal.ct.gov/-/media/DECD/Historic-Preservation/01_Programs_Services/Olmsted-Survey-Forms/New-Haven-County/05315_New-Haven_West-River-Memorial-Park.pdf#page=12
credit: Lucy Lawliss / Red Bridge Group, Connecticut SHPO
notes: 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
file: images/ED-PARK-L07.jpg
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: 
document_file: 