California Nevada RFC (CNRFC)
American River Basin (ARB)
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The inherent quality of the verification statistics is impacted by seasonal and
geographical variations. Specifically, the scores contain degradation in
(1) northern latitudes during winter due to poor ground truth data when precipitation is frozen, (2) for the three RFC areas west of the Continental Divide (CNRFC, CBRFC, and NWRFC) due to an inconsistency in the scoring, and (3) the three RFC areas just east of the Continental Divide (MBRFC, ABRFC, and WGRFC) because of poor ground truth data in the Rocky Mountain foothills areas. Scoring upgrades for the latter two problems are being addressed.