USRU OPERATIONAL REPORT
OPS#: WO18-007, Historical Missing Person

Summary:
On June 12th, 1972, 5-year-old Adrien McNaughton was reported missing by his family while on a camping trip at Holmes Lake. At
the time an extensive search was completed with negative results. Recent interest in the dissapearance of McNaughton has
surfaced due to a CBC Crime Podcast developed by independent Canadian Filmmaker; David Ridgen. Subsequently, civilian cadaver
dogs had indicated interest in both shoreline locations and more recently, sediment samples retrieved from the lake bottom during
an expedition this winter. The locations of interest were well documented by the civilian search team.
USRU members were requested to attend and search the area identified by the civilian search teams.

 Holmes Lake is a small, remote lake located
approximately 8km’s from the Town of Calabogie.
Access to the lake is found off of Calabogie Road, just
past Limestone Lake Road.

 Holmes Lake

Approximately 230 meters long

Approximately 150 meters wide

 

**Note**

These pictures are not to scale.
For visual reference only.

Civilian Cadaver K9 – Quinn
N 45ᵒ 15.332’
W 076ᵒ 52.318’

Civilian Cadaver K9 – Grief
N 45ᵒ 15.335’
W 076ᵒ 52.307’

Boat Launch – Staging Area
N 45ᵒ 15.238’
W 076ᵒ 52.365’

 USRU members utilized an in-water tender and
conducted an expanding circular line search out past
areas identified by the civilian cadaver K9s

**Note**

These pictures are not to
scale. For visual reference

 PHOTOS FROM SCENE

.. 

 

 

 

USRU OPERATIONAL REPORT
OPS#: WO18-007, Historical Missing Person

Summary:
On Thursday the 17th day of May, 2018, Ontario Provincial Police Underwater Search and Recovery Unit members attended Holmes
Lake in the Greater Madawaska area to conduct search operations related to a historical missing person investigation. USRU
members conducted dives in the area identified by the civilian search and rescue teams cadaver dogs. The depth at the location
was approximately 20’, however, a deep layer of silt made the depth closer to 30’+. Unfortunately, due to the deep layer of silt, the
pressence of debris in the silt (leaves, sticks, logs, etc.), and zero visability, the likelihood of being able to identify potential human
remains after 40+ years, is near impossible. At this time, the USRU does not possess any means of effectively searching the given
area.