Learn · Field notes

Get a feel for the window

Short explainers behind TroutWindow: why place and time matter, how bugs and trout behave, and how to read a USGS gage without fooling yourself.

The idea

Hatch × feeding × fishable and ethical. Warm-water rules, gage grades, and what this version ships versus what’s next.

Bugs

Mayflies, caddis, stoneflies, midges — the stages that matter on the water, and what actually kicks off a hatch.

Fish

Temp bands, time of day, weather that helps or hurts, and why water temperature is the biggest realtime lever.

Data

Temp, flow, and stage (00010 / 00060 / 00065), how we bind gages, grades A–D, and the modern water API.