"at the surface level" is correct and usable in written English. It can be used when one wishes to refer to the most visible or initial features of something, rather than its underlying complexity. For example, "At the surface level, the two countries appear to be in agreement, but a closer look reveals deeper differences.".
The spies in this story, if one begins at the surface level, aren't so much improbable as improbably typecast.
Two Arab and three Byzantine coins that were discovered at the surface level must have been left by travellers who camped there.
He wrote about it in fiction, essays, journalism, and reviews; it may be his most consistent theme at the surface level.
E-mail address GO SIGN UP Share Tweet The spies in this story, if one begins at the surface level, aren't so much improbable as improbably typecast.
At this stage, the surface level is flat or lower than the epithelial level (concave).
The receiver was placed at 5 m below the surface level of the water.
On the other hand, Swift is -- on the surface level, at least -- the embodiment of traditional femininity.
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MA of Applied Linguistic, Maquarie University, Australia