The curves are plotted for each 10 dB rise in level with the reference tone being at 1 kHz. Also called loudness level contours and the Fletcher-Munson curves. The curves are lowest in the range from ...

The International Rainy-Lake of the Woods Watershed Board (IRLWWB)’s Water Levels Committee (WLC) established an initial spring regulation plan for Rainy and Namakan Lakes on March 10, 2025. This plan ...