Hey man, I live in Alb and fished that lake tons growing up and a few times a year since.
Species- Rainbows- not many big ones but they are there, it's more of a numbers game for the bows. Fishing with roe is smashing this time of year, DONT SET DOWN YOUR ROD! they hit quick!jerkbaits and other trout tactics work well too.)
Lakers- This time of year people start catching those things right off the ramp it's crazy. I dont hear of alot of people catching 4 or 5 lakers a day but 1 maybe 2 is always a possibility. Once again they love eating up that roe right now... you might ask for some from a snagger or nail a female or two to stock up. jiggin cutbait might pull one also but they will be moving and taking advantage of the Salmon spawning.
There are Browns in that lake but not many at all, I rarely ever hear of people catching them.
Obviously there are Kokanee, there used to be Coho in that lake a long time ago but not anymore. Oh and there is Carp too, commons.
There is gonna be a million people there by the dam all the way lined up to the ramp so if you're taking your boat get a map of the lake and head towards willow creek and get back along the rocky shorelin and ridges and there wont be a nearly as many people if any at all. We killed it there last year it was nuts back to back to back fish whatever you wanted Bows and Kokes I'm really suprised we didn't land any Lakers. My buddy busted off one.
El-Vado this is the spot to hit for Brownies, some Bows to but the Browns are making way to the headwaters and readying for spawn. Toss big coutdowns jsut below Stone house lodge, it's the top end of the lake and the closest you can get to the river. You don't even have to fish the river just hit that big bending arm of the canyon that the river comes through. Big Browns, you've got good shot at one around 5-8# or more. When the lakes up all the way like it was earlier this year it's deep as hell itself right there but right now it should be a huge rig wall that drops straight down, then the water starts and it should be around 20-25 feet deep if it's as low as I hear it is.
Anyhow hope that helps, should about cover it.
Here's the view of the Brazos from Heron.