Hi Matt,
there is valuable information on
www.eauxvives.org. There website is still a bit under construction I suppose because I still cannot find my way to the river-area. But when you put crreze in the search box (Rechercher) at the bottom you get several hits. But looking through some old guidebook info, I did not find a lot on the Correze. It's in the neighborhood of the Dordogne and the Vezere. That's not a known as a solid class III-IV paddling area. UppderDordogne between St Sauves and Chalameyroux should have 10+ km III+ water. On the Vezere above Treignac there is also 10+ km of III+ water where they also hold downriver runs.
That's about what I cold find. Searhc the net and prey for water

Menno