This is not a lake for swimming in.
It’s too shallow: At it’s deepest, the lake is 33’ (10m) deep, with an average of 14’ (4m). Considering how big it is (28 by 75 miles, 45 by 121 km), it’s a long walk before I would be unable to stand up in it.
It’s too salty: The salinity ranges from 10% to almost 30%, depending on where you are on the lake and the current lake level. (Oceans average 3.5%). Once you do get out far enough to swim, you have to fight to stay under water.
But it is great for diaper rash. Before I was born, my parents drove through Salt Lake on their way to Berkeley, Ca. They stopped off at the Great Salt Lake to go swimming, with their 1 year old baby. Unaware of exactly how salty the water would be, they put my brother into the water and he immediately started screaming bloody murder. When they got up the next morning, his diaper rash was completely gone.
I do like going out the Great Salt Lake. It’s a nice, quiet place, wonderful for just sitting, thinking and relaxing. The smell of the lake reminds me of the smell of the Atlantic Ocean, where I grew up. The smell is a lot stronger, the water a lot calmer, but it’s still a good place to go when I miss the Atlantic.