Good chance of a salmon from the Owenglen, (River in Clifden) if you have a good flow of water. Its a spate river. I'm from Clifden so know the river fairly well. There are days you are almost guaranteed a fish.. I remember us taking 3, 4 or 5 in a day as a youngster.
In roundstone there are a couple of very interesting bog lakes. Most lakes have very small fish, but there are a couple of lakes where the fish size is decent. One is called Scannive and the other is called Naweelaun (i think). They are out the galway road a few miles from Roundstone...
Very interesting lakes and some good fish. They may average 1lb and always a chance of a better fish... They are about a 1.5 mile treck through the bog. Maybe take a compass
Send me a PM and i'l give you more details.
Cheers
JJ