NPVU
For QPF verification, the National Precipitation Verification Unit (NPVU) provides verification information for the RFC area. These graphics show two one-year periods covering the 2-year period from October 2007 through September 2009. This is offset by just a couple months from the OHRFC study. The NPVU and IVP data are not directly comparable. NPVU considers the entire RFC area, but the IVP study of stage forecasts looks at 18 test basins within the OHRFC's service area. Also, the OHRFC study looks at "no QPF" versus QPF input and does not stratify QPF impact by QPF magnitude as NPVU does. The NPVU data is still useful information in that it provides an idea about the range of errors associated with QPF for the OHRFC area. It also suggests that future work at the OHRFC may want to include categorizing QPF by amounts.
