| 20.0 | The entire upper Napa Valley will have disastrous flooding with travel all but impossible. | | 19.0 | The upper Napa Valley will have major flooding making travel nearly impossible. All towns within the reach will have major to disastrous flooding. | | 18.0 | The lower areas of towns along the reach will have moderate flooding. The moderate flooding will cause widespread crop losses and erosion of land. Many primary roads and most secondary roads will flood making travel very difficult to impossible in some areas. | | 16.5 | Minor flooding will occur along the entire reach including the lowest areas of towns along the reach. Many rural areas including some primary roads and many secondary roads will have minor flooding. |
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Historical crests are unavailable.
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Low water records are unavailable.
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