alum

Lake Restoration–State of the Art 2011

by sp on October 27, 2011

The North American Lake Management Society is meeting this week in Spokane. The conference center is right on the banks of the Spokane River; it is a beautiful site. (Did you remember that Spokane hosted a World’s Fair in 1974? I didn’t. The river park is a legacy of that event.)

Spent all day yesterday in sessions on lake oxygenation and alum application, with a some very interesting work on mercury mitigation thrown in for good measure.

Headlines thus far:

  • Oxygen–you probably need more than you think
  • Alum–a tool that works, maybe poised for  a comeback, as watershed BMPs cannot help you deal with the phosphorus already in the sediments
  • Mercury–nitrate applications can inhibit mercury movement from sediment to water (and thence to fish), good news for a seemingly intractable problem

Looking forward to what Day 2 may provide.

{ 0 comments }