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Guard Locks, Massachusetts

Guard Locks is a dam located in Middlesex County, MA at N42.643425° W71.328950° (WGS84/NAD83) and at an elevation of 88 ft MSL.


Feature Type: Dam
Latitude: N42.643425° (WGS84/NAD83 datum)
Longitude: W71.328950°
Elevation: 88 ft MSL
County: Middlesex County, Massachusetts
USGS 24K Map:
USGS 24K MRC:

You can view this location or feature in our Topographic Map Viewer by clicking on the map views below:

USGS 1:24K topographic map:
USGS 24K topo map of Guard Locks, MA
Source: US Geological Survey

Aerial imagery:
Aerial imagery of Guard Locks, MA
Source: US National Map

OpenStreetMap:
OpenStreetMap map of Guard Locks, MA
Copyright OpenStreetMap contributors, map styling by TopoQuest

OpenTopoMap:
OpenTopoMap map of Guard Locks, MA
Copyright OpenStreetMap contributors, map styling by OpenTopoMap and TopoQuest

FAA VFR aeronautical chart::
FAA VFR chart of Guard Locks, MA
Source: US Federal Aviation Administration


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Note - Locations and features list is only available for 1:24K series maps.


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