rgano
Guru
- Joined
- Oct 8, 2007
- Messages
- 4,995
- Location
- USA
- Vessel Name
- FROLIC
- Vessel Make
- Mainship 30 Pilot II since 2015. GB-42 1986-2015. Former Unlimited Tonnage Master
The owner of the boat I am delivering to Lake Michigan from the Gulf Coast got the bright idea of emailng the River Gages folks about the question of potential currents. His response is below:
The general rule of thumb we use is based upon the St. Louis gage height:
St. Louis greater than 30 ft:
Straight Reaches ~ 5.5-6.5 ft/s (3.7-4.4 mph)
Bendway Reaches ~ 8.5-9.5 ft/s (5.8-6.5 mph)
St. Louis at 15 ft:
Straight Reaches ~ 5.0 ft/s (3.4 mph)
Bendway Reaches ~ 7.0 ft/s (4.8 mph)
St. Louis less than 5 ft:
Straight Reaches ~ 3.5-4.5 ft/s (2.4-3.1 mph)
Bendway Reaches ~ 4.5-6.5 ft/s (3.1-4.4 mph)
The general rule of thumb we use is based upon the St. Louis gage height:
St. Louis greater than 30 ft:
Straight Reaches ~ 5.5-6.5 ft/s (3.7-4.4 mph)
Bendway Reaches ~ 8.5-9.5 ft/s (5.8-6.5 mph)
St. Louis at 15 ft:
Straight Reaches ~ 5.0 ft/s (3.4 mph)
Bendway Reaches ~ 7.0 ft/s (4.8 mph)
St. Louis less than 5 ft:
Straight Reaches ~ 3.5-4.5 ft/s (2.4-3.1 mph)
Bendway Reaches ~ 4.5-6.5 ft/s (3.1-4.4 mph)
