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"Lake Shipping, Slipping"

3 years 11 months 2 days ago June 20, 2013 Jun 20, 2013 Thursday, June 20 2013 June 20, 2013 3:00 AM in Pat Shingleton Column
By: Pat Shingleton

Approximately 85 percent of the Great Lakes shipping trade include iron ore, coal and limestone. Additional tonnage is salt, cement, grain and oil. NBC Nightly News reports that evaporation on the Great Lakes is outpacing precipitation, compromising water levels. The Lake Carriers Association reports that for the 14th straight year, low water levels are impacting the $34 billion shipping industry. Three lakes remain below historical averages and last January, Lake Michigan and Huron hit record lows, followed by the largest freshwater lake in the world, Lake Superior. Barge captains report draft levels of 2.5 to 3.0 feet, sometimes as low as 9 inches. Hydrologists believe a lack of snow and rain over the lakes last winter drastically reduced levels in addition to evaporation fueled by warmer water temperatures.

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