What is a good bass lure/technique for fishing above/below dams? Will Senkos or roadwarriors work? Any other suggestions? Also certain hotspots to look for near dams?

It is not the dam itself but what is under the water on both sides of the dam.

Rocks, trees, pilings, sand, gravel, flat bottom, clay, grass, etc.

The depth of the water on both sides of the dam. Usually, dams have a deep area on the flooded side and a shallow area on the discharge side.

So what can work?

Lots of things. If the water is running do you think a swimming bait such as a spinnerbait or a crankbait would work? Grub? Fat Ika? 

On the discharge side, are there any calm pockets to the right or left along the bank? Good place for smallies to hide and wait for dinner.

On the deep side, would a shaky head or drop shot be the answer? Or should you consider a wacky Senko?

Back to the shallow side when the water is running. Would allowing a plastic swim from the dam be the ticket?

Just go out and experiment for a week on both sides of the dam, if possible, and make notes as to the depth you found the bass, baits used, the weather, water clarity, water temperature, barometric pressure, baits used, spinning or baitcaster, etc. so you can find where the bass are hiding.

Let us know how you do.

(And you thought all you had to do was rig up and throw something)

It is not the dam itself but what is under the water on both sides of the dam.

Rocks, trees, pilings, sand, gravel, flat bottom, clay, grass, etc.

The depth of the water on both sides of the dam. Usually, dams have a deep area on the flooded side and a shallow area on the discharge side.

So what can work?

Lots of things. If the water is running do you think a swimming bait such as a spinnerbait or a crankbait would work? Grub? Fat Ika? 

On the discharge side, are there any calm pockets to the right or left along the bank? Good place for smallies to hide and wait for dinner.

On the deep side, would a shaky head or drop shot be the answer? Or should you consider a wacky Senko?

Back to the shallow side when the water is running. Would allowing a plastic swim from the dam be the ticket?

Just go out and experiment for a week on both sides of the dam, if possible, and make notes as to the depth you found the bass, baits used, the weather, water clarity, water temperature, barometric pressure, baits used, spinning or baitcaster, etc. so you can find where the bass are hiding.

Let us know how you do.

(And you thought all you had to do was rig up and throw something)

Exactly what Sam said. Over time dams accumulate brush, trees, and other sorts of debris. These pile up under the surface and generally where the dam itself meets the bottom substrate of the actual lake. I find these "gatherings" on my depth finder and tie on a deep diving crank bait and work it as much as possible. Generally if they don't bite the crank bait, I'll throw a jig (usually a 1 oz.) and they usually commit to that.

Good luck!