Blackwater

Definition and stakes

W. Blacker Blacker's Art of Fly Making, &c

The angler, when he gets tired here, may return to Killarney, and make head for the west and north, "and sure enough he may have another throw on the lakes, if he pleases, by way of bidding them good bye."
He might take a start before he goes across the hills to Kenmare, by car, and have a day or two on the river Blackwater, usually called "Kerry Blackwater;" it is about eight miles from Kenmare, on the south-west side of the estuary of that name, on the road to "Derrynane Beg," or Derrynane Abbey. There is an inn on the river as you cross the road, but no town.
Source: Gutenberg

Sinclair Lewis Arrowsmith (1925)

Blackwater, flat and breathless town of tin-roofed plaster houses and incandescent bone-white roads, of salmon-red hibiscus and balconied stores whose dark depths open without barrier from the stifling streets, has the harbor to one side and a swamp to the other.
Source: Gutenberg

Amy Bell Marlowe Frances of the Ranges; Or, The Old Ranchman's Treasure

Blackwater, as the Bar-T boys called him, was a notorious rebel. He was originally a maverick–a stray from some passing herd–and had joined the Bar-T cattle unasked. That was more than two years before. He had remained on the Bar-T ranges, but was evidently determined in his dogged 123 mind not to submit to the humiliation of the branding-iron.
He had been rounded up with a bunch of yearlings and calves a dozen times; but on each occasion had escaped before they got him into the corral. It was better to let the black rebel go than to lose a dozen or more of the others while chasing him.
Source: Gutenberg

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