Idaho Fish Report

The Metolius is fishing well, especially on nymphs. Dry fly action is spotty, but being in the right place at the right time you should see Blue Wing Olives #18-20 and Cinygmula #14-16 mayflies during the afternoon between noon and 4. There are also quite a few caddis hatching including October Caddis #8 and what I believe to be Brachycentrus #14-16 (Mothers Day Caddis) along with minor hatches of several other types of caddis. 
Walts Worm and Perdigons are picking up a lot of trout and whitefish. Stonefly nymphs, caddis pupa, 2 bits, micro mayflies, zebra midges, olive scuds, leeches and rainbow warriors are all patterns to play with on the river this week. 

Stripping small sculpins and pine squirrel minnows is a fun approach to the river for trout. A larger streamer swung or stripped is always good for Bull Trout. 
The Headwaters to Allingham Bridge remain closed until May 22nd.