Lower Lake Levels: Multi-Causes

There’s more concern about lower water levels in the Great Lakes, both due to increased drainage, and possibly global climate change. Chuck Quirmbach reports:

Transcript

There’s more concern about lower water levels in the Great Lakes, both due to increased drainage, and possibly global climate change. Chuck Quirmbach reports:


More data from a privately-funded study show long ago dredging on the Saint Clair River near Detroit may be one of the reasons for low water levels in Lakes Huron and Michigan.


Another study by the US-Canada International Joint Commission is looking at what to do about the higher flows out of the lakes. But hydrologist Roger Gauthier, of the Great Lakes Commission, adds a long warming trend to the list of factors affecting levels in Lakes Huron, Michigan and Superior:


“We’ve had below average snowfall. We’ve had very little ice cover in terms of thickness or duration. Much warmer lake temperatures.”


Less ice cover leads to more wintertime evaporation. Experts say trying to fix the drainage problem and control global warming should be goals.


For the Environment Report, I’m Chuck Quirmbach.

Related Links