- The lake is located across the border between the two cities.
- The lake is located astride the border between the two cities.
I am trying to describe a certain lake that has a portion in one city and the remaining portion in the other city. I first created the first sentence but after googled, I am afraid that "across" in the first sentence may be misinterpreted as "on the opposite side of". According to my dictionaries, it seems that "astride" can be used in this case, but "astride" is unfamiliar to me, so I want to use a simpler word like "across" if possible.