Twin Ports tonnage down despite strong coal, wind turbine shipments
August 16, 08 by TheFleetIf you're new here, you may want to subscribe to our RSS feed. Thanks for visiting!
Source: Duluth Seaway Port Authority
Higher Great Lakes water levels, continued strong coal shipments and a windfall of wind turbine traffic all contributed to strong tonnage totals through July, yet Duluth-Superior’s maritime commerce is lagging slightly behind last year’s record-setting pace, the Duluth Seaway Port Authority reported today.
All cargo through July totaled 21 million short tons, 6.5 percent behind 2007, which is remarkable considering grain shipments were down 62 percent compared to this timeframe last year.
Lake Levels Up.
Above average spring rainfall in all of the Great Lakes basins raised lake levels well above their levels of a year ago. Lake Superior is 16 inches above last year’s level, and forecasted to rise an additional inch over the next 30 days, enough to allow vessels to depart Duluth-Superior with as much as 14 additional inches of draft compared to the end of last year’s shipping season.
Each inch of draft means about 270 tons of cargo for the largest domestic lakers and about 100 tons for typical Seaway vessels. The remaining Great Lakes range from 6 to 13 inches above their levels of a year ago, and despite some seasonal declines forecasted for Lakes Erie, Michigan-Huron and Ontario, all (with the exception of Erie) are expected to remain above 2007 water levels over the next few months.
Coal Leads Commerce.
Historically the Port’s No. 2 cargo, coal shipments eclipsed iron ore during the early months of the 2008 shipping season and continue as the Port’s maritime commerce leader to date. The clean-burning, low-sulfur coal shipped via the port’s Midwest Energy Resources Company terminal reached 9.9 million tons through July (three percent above last year’s level). Total iron ore shipments through July of 8.9 million tons were running 12.4 percent behind 2007 tonnage totals to date. Iron ore shipments are expected to increase in the second half of the shipping season.
Project Cargo on Track.
Project cargo shipments at the Clure Public Marine Terminal continue to be strong. Wind turbine component cargo handled by Lake Superior Warehousing Co. is Read the rest of this entry »


