callibaetis dries (late morning through afternoon): parachute adams; grey sparkle dun; grey comparadun, sizes 16-18
callibaetis emergers(late morning through afternoon): quigly cripples; cdc emergers; etc, sizes 16-18
callibaetis nymphs (all day): PTs; birds nests; poxy-back callibatis, sizes 14-18
caenis mayflies (dusk to dark, and first light): tiny white comparaduns and sparkle duns, sizes 20-24; cluster midges (griffiths gnat in whitedubbing instead of peacock, renegades), sizes 18-20
chironomids (late evening and early morning): every kind of midge pupa and emerger you can find (the evening midge rise can be incredibly complex and challenging), sizes 16-24
caddis (late evening): x-caddis; cdc emergers; headlite caddis; parachute caddis; quigly cripples; soft hackles (for emergent pupae), sizes 16-20
Travelling sedge (dusk to dark): Tom Thumb; green stimulator; green madam-x; green chernobyl ant, size 8-10 (skate/wake on surface with short strips, ALWAYS toward shore)
adult damsel (all day, particularly afternoon): borger damsel; bucktail damsel; stalcup damsel, size 10 (mostly in blue, but have a few in green and tan)
AFTER DARK (10pm - 3am): largish, dark wooly buggers towed on floating, sink-tip, or intermediate line.
Fishing will be very good, especially in evening, but no pushover (note complexity of evening activity). Fish will not be in best shape with warmer water temps. You WILL kill fish; I'd figure AT LEAST a 10% - 20% mortality rate. If you get a really hot hand, consider packing it in for the day, and enjoy the equally excellent birding (several types of woodpecker [I saw a yellow-bellied sapsucker one year!], cedar waxwings, orioles, western tanangers, warblers, etc).
Take plenty of DEET, and stay out of the bushes during the day. The mosquitos can be incredibly bad this time of year (is the big "mosquito is just anotrher part of nature" sign still there?). They'll carry you away out there.
Only the very first part of the road is scary (though I'll bet REALLY scary in the dark), but if you've never been there, finding the way in can be a little tough, even in the day light. I don't know if I'd try it at night.