Put a thermometer in your pack … and use it | Trout Unlimited

It’s up to us to know when the waters we fish might be working against the trout we’re after. Arm yourself with a water temperature thermometer, and by all means use it
— Read on www.tu.org/magazine/put-a-thermometer-in-your-pack-and-use-it/

For those Upper Grand Fly Fishers who regularly stalk the little stocked Brown Trout and the big ones in the Tailwater, the last 2 weeks of above seasonal temperatures have likely raised the water temperatures below the Shand Dam more quickly than usual. Check your temperatures before you fish with a thermometer. You’ll also be able to key in on trout feeding and the insects knowing this information. See the Grand River Conservation river flows and temperature pages to assist.

River Flows: https://apps.grandriver.ca/waterdata/kiwischarts/rf_uppergrand.aspx

Temperatures: https://apps.grandriver.ca/waterdata/kiwischarts/wq_temp.aspx