Unofficial. A directed-network view of public NOAA river forecasts — not an official source, and it does not replace the National Water Prediction Service. In a flood emergency, call 911 and follow local officials.
River Flood Propagation
Rivers are a directed network — water flows one way, and an upstream rise leads downstream flooding by hours to days. This walks the main‑stem gauge chain, identifies elevated upstream gauges and compares downstream forecast peak times — instead of only reacting to wherever the water is loudest right now.
The river corridor
upstream → downstream main stem (NOAA NWPS gauges)
tracing…
Where the leverage is
upstream gauges ranked by the number of elevated downstream gauges in this chain — the directedness signal
How this works
About. An unofficial prototype that reorganizes NOAA's own public gauge observations & forecasts into the directed river network. It does not forecast better than NWS — it surfaces the propagation: upstream/downstream order and independently reported forecast peak times. Always follow the National Weather Service / National Water Prediction Service and local officials; call 911 in an emergency.