Hi Glyth From a fellow cornhusker !!
I was born In Grand Island but have not lived in NE for many years now,, I do however have relation all over the state !!
If I lived in Omaha,, and wanted to get in the learning curve of my detector,, while I reseached the area for better places meaning older coins !! I would probly try and get on the University football field, city parks, and some of the swimming holes along the river .
about 40 miles north of you is a little town called Herman,, I had some relation that lived there, He found V nickels
, walkers and Indian Head cents
in his yard after the rains,, so I know that there is good hunting there .
Take a look at some local historical maps,, seewhat you can come up with, If you need help just holler !!