Ensemble Streamflow Prediction (ESP)

---

The ESP System produces probabilistic forecasts of hydrologic variables.

ESP assumes that historical meteorological data are equally likely to occur in the future.
It accesses files in the Operational Forecast System for an estimate of the current hydrologic state, and uses historical meteorological data to create many equally likely sequences of future hydrologic conditions, each starting with current conditions.
The generated streamflow time series can then be analyzed for peak flows, minimum flows, flow volumes, stages, etcetera, for any period in the future.

A 'spaghetti plot' ...