flies to invest in for the first day of trout

I'd use anything bright.  San Jauns are a good way to go.  Green Weenies will get some interest too.  I have done pretty well on maggot immitations and egg patterns.  For some reason, the freshly stocked trout love what the bait shops sell.  So immitating regular bait, seems to do it.  Once they get imprinted into the stream, and see what a stonefly nymph or a helgremite is, then start throwing them.  You are fishing some spots that seem to have fishing pressure almost year round.  Tossing something "natural" would probably be your best bet for a hold over, but they stock them pretty big there, so no real reason to target holdovers.  Keep an eye on some of the local fly hatch charts.  If you get a nice sunny day, chances are, you'll hit some type of hatch.  Two years ago, the top water action was really fun where I was at.  I'm pretty sure they were some type of mayfly.  Just about anything their size was working.  #10 & 12 Bluewing olives, elk hair caddis, and some type of mayfly immitation that I was throwing was all getting hits.  Probably only hooking 1 out of every 4-5 strikes though.  I'm sure, those that knew what the bugs were, would have had a better fly to throw and better action.
 
IMO- You are most likely going to be more challanged with the fly gear, early in the season.  Once the fish get settled in, I think that challange turns into advantage.  I'd imagine since below the dam holds many more fish that have been there for a while, you should do just fine. 

ORIGINAL: anadromous

Kyler,
Pheasant tails, gold ribbed hares ear, prince nymphs and bead heads odf any kind will catch anything that swims stocked or wild. I like to use maggot fly patterns. Fish a tandem rig with an egg pattern first then a nymph trailer...Fish On!!!!

 
What anadromous said.  And I'll add san juan worms to that.
 
IF you want to fish dry flies in that area all you'll need is a tan elk hair caddis, #14 or 16 and a #16 parahute Adams.

ORIGINAL: kyler16

ORIGINAL: anadromous

Kyler,
Pheasant tails, gold ribbed hares ear, prince nymphs and bead heads odf any kind will catch anything that swims stocked or wild. I like to use maggot fly patterns. Fish a tandem rig with an egg pattern first then a nymph trailer...Fish On!!!!

now heres where I get confused, should I weight any of those tandoms?

 
When you nymph, always use enough shot to keep your flies bouncing on the bottom of the stream. If you arent periodically getting hung up on the bottom, use more weight. Also, place an indicator, roughly1.5 - 2 times the depth of the water, above your shot.

I cannot believe that Im the only one to mention wet flies, you guys are really missing the boat if your not fishing them... hell last time me and drake fished SC, I had a fish take a wet so hard it took the fly line upstream!

I wasnt trying to overwhelm him eaither, I was saying by far, wets to me seem the most productive out of anything  especially leadwings! Now for natives, the leadwing doesnt seem to be enough, you gotta match it a little more closely.

How about a McIce and a vailed spawn!

I know the feel of the fly rod pretty well and the casting parts.....its just understanding the flies. Which wet flies should I look for at gander or the local bait shop.  another guy told me to buy a couple Green wennies or what ever so I got 2 of them and I have some stone flies. yea alot of this info you guys are giving me is going in my tiny note book I take with me and mark down what flies do what and what I catch with them....refrences I can use for later dates. I appreciate all the info.... I know I should learn most of it on my own but I dont want to be throwing flies that make no sense., what about Clousers? i have 3 of them and I had good strikes up at spring creek on them but always missed the hook set. 

Leadwing Coachmans
Royal Coachmans

All you need for stockies in the wets, I cant really tell you what to put in your box, you gotta learn the hatches of the streams you fish.

Whats a McIce? Streamer, nymph ?

The way I fish wets (and believe me I'm no expert) is like I would if I were fishing nymphs...I'll cast up and across, mend line or even high stick to get a natural drift and then let it swing and hang in the current at the end.

The most popular way, or easiest anyway, is to cast directly across, let it swing and hang in the current, adding action from strips of the line or twitches from the rod if you wish.

CAn't wait...april 14th will be here b4 we know it

I do about the same as ronney, except I also just full out swing them.

kyler
I got a Pellet-Head Fly / Tubbie Fly,and its the real McCoy
 
If you need help with selection,or product,I may be able to help,you........
 
 

 
I've been reading along here with interest, since I just picked up a fly rod for the first time early last summer.  Been doing OK now and then on a delayed harvest section in southwest PA the past few weeks with single egg patterns and sucker spawn, but have yet to hook up on any of the nymphs I bought from the local fly shop: hare's ear, bead head, and black stonefly.
 
I've been fishing the nymphs mainly under an indicator in the slower, deeper pools with no results.  Switch to the egg or spawn, and my luck changes.  Couple of questions come to mind. 
Should I be fishing nymphs without an indicator?  Are nymphs more productive in faster water?
Is there kind of conditioning period that pelletheads undergo when they begin to prefer nymphs and more natural flies over the eggs and spawn patterns? 
When you guys talk about wet flies, which patterns should I look into getting? 
When do hatches start showing up and what dry flies should I be looking to use then?

Thanks Dano.  The stream I've been fishing was stocked with plenty of browns and rainbows, but most of the fish I've caught have been rainbows.  Except the day a buddy and I were throwing spinners.  Caught more browns that day, which I usually do when I'm chucking hardware on a stream.  So your guess is a pretty good one, I'd say. 
 
Was talking to a guy there the other day who said that later in the spring on that stream it seems like a switch is turned on and stonefly nymphs are the only thing he catches them on.  Like you said, I'm still learning and loving it.  My wife on the other hand is not so thrilled that I have a new addiction.  Haven't told her I wanna get a vise and start tying my own yet.  Gotta figure out which old addiction to drop now, cause I'm loving the challenge of learning to fly fish.  In fact I'll probably save the spinning rod for the farm pond bass this spring.  Or buy some poppers!!