Extracted from Jim Casada's September Newsletter "The Sweet of September"

http://www.jimcasadaoutdoors.com/New...Sept10News.htm

"September is sumac and dogwood leaves turning red, the berries atop Devil’s club turning purple, and the flowers of fall—wild asters, goldenrod, and many more—showing their vibrant colors. It’s mist hugging the ground on a cool morning. It’s dust devils dancing across bone-dry fields in the mid-afternoon sun. It’s time alone on a trout stream where stealth and precise casting are at a premium. As one casts he can contemplate the coming spawning movements of big browns and dream good dreams of October. September is the comfort of a campfire in the backcountry, and if you are mathematically inclined you can listen to katydids and figure out the air temperature. Just count the number of chirps in a minute, subtract 40, divide the result by four, and then add 60. Better still, invest a couple of bucks in a backpacker’s thermometer."

Wonder if Jim has for determining water temperature...?