The phrase "a reportage on" is correct and usable in written English.
It can be used when referring to a detailed account or report on a specific topic, event, or issue, often in a journalistic context.
Example: "The magazine published a reportage on the effects of climate change in coastal cities."
Alternatives: "a report about" or "an article on".
A story I hadn't read any reportage on.
Recently, Bloomberg's Charlie Devreux and Pablo Gonzales penned some most edifying reportage on one thing that's booming in Argentina: criminality.
The journalist Michelle Goldberg conceived her first book, "Kingdom Coming: The Rise of Christian Nationalism" (2006), as a work of reportage on a subculture of growing political influence.
His first big book, The Studio (1969), was a work of reportage on a year he spent at the 20th-Century Fox studio.
Jobs' reaction to a tech blog's reportage on a new Apple product, meanwhile, is depicted as a fierce overreaction.
LeoToadstool is halfway through Voices from Chernobyl by recent Nobel winner Svetlana Alexievich (translated from the Russian by Keith Gessen): [It] is a collection of reportage on the famous nuclear catastrophe and its aftermath, published about a decade after the event.
Even then it is a matter of reportage on the side controlling the media -- and then for the side not being covered, the divide is as salient as a wall blocking a walkway.
This documentary is the result of a year-long reportage on the struggle by Aya and her three sons to overcome the cycle of child abuse.
(For a full and a depressingly eye-opening reportage on this issue please read Roger Kimball's "Villain or Fall Guy? Yale and the case of the Missing Cartoons").
His briefs insinuate that Ms. Mayer is an Administration "agent" and that there's a pattern linking her reportage on Ms. Tripp with the White House's abhorrent rifling of F.B.I. files of former employees in 1993.
