Water in Bottom Bracket

If you Google bottom bracket drainage holes, you will find lots of advice and pics of various shapes and sizes - Campag insist on a drainage hole for an ultra torque set up.

I found the same when replacing bottom bracket on my winter bike last year. I guessed water was entering around the seat post, so I removed and thoroughly greased all around the seat post. I'm also careful now when cleaning my bikes not to be too generous splashing water around the seat post. I must admit I've not checked since to see if this has eliminated the problem. I guess time will tell.

Pretty common that.....although yours is much better than 90% of what I see in the workshop..... corrosion and water wise...  C*nn0nd@le always seem to be the worse for flooded BB shells from experience.... BBR60 and the like tend to allow water past the plastic bearing sleeve as it wears through use and age.....caveat being the ones I have fitted the past 18 months or so are no where near as good quality as 2-3 years ago....

Drill a small hole in the lowest point of the bottom bracket shell to drain it, a small hole about 2.5mm won't weaken the frame  enough to notice, there is plenty of metal at that point.  If you are worried about doing that there is probably a bolt holding a cable guide under the bottom bracket,  drill a hole in the bolt instead 

Looks about the same as I had earlier in the year. I always understood water ingress to be a BB potential and something to check in normal maintenance.