Spring time they will likely be holding on flats near the areas I circled, which are most likely areas that I think they will hold in winter and summer. Depending on when you are there they could be at any stage of spawn, so I would start around those areas. From pictures I see on Google it looks like fairly clear water so wear some good shades and move slow and keep an eye out, you will likely spot fish roaming around any sort of cover such as a stick, single rock, small patch of grass, heck I have even seen fish hug a beer can because that was the only thing on a sandy bottom. But also remember, if you can see them they have probably already spotted you so they will be harder to catch most times. If you are seeing fish though then you know your in the right area, make long casts with light line and work slow, not necessarily slow baits, but move slow yourself. When it gets closer to spawn they will be on flats near these areas I circled. Look for wind protected little pockets in the bank with a bottom containing sand and small pebbles, this is where they will spawn. Early spawn they will be moving back and forth between the circled areas and the flats, and then again in late spawn as they move back to those summer pockets. I personally think that creek dumps in near Long Island (right most circle) looks especially good. Another thing to keep in mind is current, anywhere a creek flows in there will be a little bit of current, focus on cover that is in that current or on any flat near that current.
Hope this helps!