It is definitely saveable. Leave the battery out for several days. If you can disassemble it to dry it out that's even better. Use this thread for disassembly: 8100 Disassembly - BlackBerryFAQ
If you are not into disassembly then plan on leaving the battery out for 4-5 days in a nice warm spot. A hair dryer might speed up the process but can get a little tiring. You must get ALL the water out of it.
Once it's dry then you can put the battery back in it'll probably be fine. The biggest error people make is to get in a hurry and put the battery back in too soon. Water doesn't hurt the BB, but water and electricity does.
If you have an old phone put your sim card in it and use that for a few days while it's drying. If you don't have insurance on the phone a few days will save you several hundred dollars.
I did this with a 7100t that went to the bottom of a hot tub. I disassembled it, dried it out, and put it back together. It had water marks on the screen and a white screen with some error. I used JL_CMDER to wipe the device and reload the OS. Worked great. Water marks I thought were there to stay so I threw it in a drawer. I pulled it out a week later and, low and behold, the water marks were gone and the device had a beautiful bright display again. It still works to this day.
Good luck. Post back if you need some more help.