There are still super fish in the river.
If you can find nice pools of water below rapids you will find the smallmouths. Plenty of largemouth too.
If you can find some open water and are struggling for bites than throw an inline spinner/ Mepps to cover some water.
In those open pools try small cranks ( my favourite are the silicon Wild Eye Bluegill).
If you are fishing in the weed, bushes, reeds etc then use small spinnerbaits, worms, grubs and poppers to avoid getting hung up.
Often pays to have a small black lead head or Zulu rigged up as big carp and barbel often come cruising past.
Early morning and evenings are magic and the topwater bite is often an option.
Enjoy it!