The fishing is Good right now.
Best flies right now: Flu Shot, Hot head Leech, Thin Mint
Best Lures: Rainbow Trout or Copper Spoons
Best Baits: Leeches, Nightcrawlers
To locate Diamond in a “maps app” search for Bosler Reservoir or you will end up in the wrong place on private land.
Take I-80 to exit 279 Cooper Cove and head north.