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St. Clair Flats Canal Range Rear Lighthouse

F Green🇺🇸Clay Township, USOperational

Location & Light Range

About St. Clair Flats Canal Range Rear Lighthouse

A 30-meter steel skeletal tower, built in 1935, stands as the St. Clair Flats Canal Range Rear light. The structure is square and cylindrical with a flared top, its upper two-fifths covered by white steel panels. It emits a green light with a single flash characteristic every 6 seconds. The tower has a focal height of 34 meters and a geographic range of 16 nautical miles. This light is located north of South Channel Drive, approximately 1220 meters northeast of the front light, and serves as part of the entrance range for the St. Clair Flats channel. The original station was established in 1871.

Why it matters: This range light guides vessels through the St. Clair Flats channel, which was formerly the main entrance to the river from Lake St. Clair.

Light & Optic

Characteristic Signature
F Green
Flash Type
Fixed
Light Color
Green
Raw Code
F G
Focal Height
34m
Geographic Range
16NM

Construction & History

Year Built
1935

Significant events: station established 1871, original lighthouse was an octagonal brick tower attached to a keeper's house, replaced by the dredged St. Clair Cutoff to the south

References & Identifiers

Nearest Port
Algonac(6.1 km)
USCG No.
7-8540
ARLHS No.
USA-1333

Tower & Structure

Tower Height
30m
Tower Shape
skeletal
Tower Color
white
Material
steel

Structure: A 30m square cylindrical steel skeletal tower with a flared top. The upper two-fifths of the tower are enclosed by white steel panels.

Location

City
Clay Township
Country
🇺🇸United States
Region
Michigan
Sea Region
entrance range for the St. Clair Flats channel, formerly the main entrance to the river from Lake St. Clair but now replaced by the dredged St. Clair Cutoff to the south. Located north of South Channel Drive, 4000 ft (1220 m) northeast of the front light.
Latitude
42.5581°
Longitude
-82.6410°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify St. Clair Flats Canal Range Rear Lighthouse at night?+
St. Clair Flats Canal Range Rear displays the characteristic F Green. Each lighthouse has a unique flash pattern published in the List of Lights, allowing mariners to positively identify it and distinguish it from other navigation aids in the area. The green color may indicate a specific sector or warning zone.
Which ports and harbors does St. Clair Flats Canal Range Rear Lighthouse guide vessels into?+
St. Clair Flats Canal Range Rear Lighthouse assists vessels approaching 5 nearby ports. The closest is ALGONAC at 5.8 NM to the NE. Other ports served include FAIR HAVEN (7 NM N), NEW BALTIMORE (8 NM NW), New baltimore (8.1 NM NW), ANCHORVILLE (8.2 NM NNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is St. Clair Flats Canal Range Rear Lighthouse still active and maintained?+
Yes, St. Clair Flats Canal Range Rear Lighthouse is currently operational. It is actively maintained and continues to emit its characteristic light signal for marine navigation. Most modern lighthouses are automated and monitored remotely by the national maritime authority.
How can I track vessels near St. Clair Flats Canal Range Rear Lighthouse?+
You can track vessels near St. Clair Flats Canal Range Rear Lighthouse in real time using MarineRadar. The platform shows live AIS positions of ships in the area, including vessel name, type, flag, speed, and course. Use the "Track Vessels Nearby" button on this page to open the live map centered on this lighthouse.