
Photo credit
The Blackfoot River, Montana (BLM). Photo: Bureau of Land Management, public domain, via Wikimedia Commons
Follow Back Creek.
One email when the flow at the gauge you pick crosses what you choose. We check the public USGS reading every 2 hours and email at most once every 6 hours, several waters in one message. Flow alone is not a fishing forecast or a safety call.
How it works
The first reading after you follow is the starting point, so nothing is sent for it. After that we email only when a reading crosses what you chose, not every time we look; if several waters change, they come in one email. Every email names the gauge, the reading and its time, links the USGS gauge page, and has one-click links to stop alerts for this water or all flow alerts.
USGS marks recent readings provisional; they can be revised. A gauge that stops reporting sends nothing until it reports again.
