Nikon doesn't expect the impact of the floods in Thailand to be excessive because the factories in Thailand are covered by insurance - from the latest Nikon Q&A:
At present, facilities are still submerged and we are unable to obtain an accurate damage bill and as a result, extraordinary losses resulting from damage caused by the floods in Thailand have not been included in these forecasts. Thorough survey of the damages will commence once the water has receded. Further, the facilities are covered by insurance therefore we do not expect the impact will be excessive.
Here are some images from Rojana Industrial Park where the Nikon facilities are located - water is being pumped out of the park with generators:
The water levels continued to drop this week but are still above 2 meters in many areas of the industrial park:
For comparison, here are the water levels from the past few weeks: