I am from northern Utah and fish an area known as cutler d**n.  This is a river system that is 90% shallow 1-3ft with a channel being upwards of 18ft.  There are at least two different rivers that feed into this "swamp" .  Water clarity is usually  very muddy with no visability, there are a few bridges and many little islands and mainly catails for shoreline and muddy silty bottom.  I was wondering where some good places would be to try and catch some bass in this type of river system.  I know there are large mouth and small mouth in this river.  This time of year water temps are around 39-43 degrees.  This river is very slow moving with not much current except for in the channel itself.  I love to bass fish and I am trying to pattern this place out.  Most people fish for carp and catfish in these waters but i know there are big fish in there and just trying to locate them.  Trying to broaden my river fishing skills and would appreciate any input on where is should target.  If you would like a better layout of where i am fishing go to google earth and type in Cuttler d**n cache county, Utah.

Looked up Cutler Marsh outside of Logan, didn't find a contour map however. 

This lake gets very little fishing pressure from what I could determine which means any bass should be in classic ambush locations. If you have a map showing the channel target bends that come close to reed points using a spinning bait, hollow body frog into the reeds and GYCB Ika or T-rigged worms along the channel breaks.

Keep it simple and cover lots of water until you find active feeders.

Good luck.

Tom

Just to add to what Tom said, I wold be looking for any sort of hard bottom. That and with the dirty water  I might try a chatterbait, lipless crank while it's still real cold. Once it warmed up I'd throw a lot of top water, a popper or whopper plopper around any cover. Good luck be nice to see how you do.