IVP: Deterministic Approach
Case study one, from the OHRFC, looks at the question: "How well do the river stage forecasts verify based on whether QPF is used as input?" The study also looks at the impact of lead time and the impact of modifications done to hydrologic forecast variables during the forecast process.
The IVP tool is used to examine verification of deterministic forecasts at point locations. The point locations are at the outlets for each of 18 river basins studied. The eighteen river basins used in the study are grouped, or aggregated, based on physical similarity as measured by hydrologic response time.
This case study looks at measures of forecast error, bias, correlation, and skill with respect to lead time. This case study will be detailed in section 2.