Statistics for occurrence #1 of “Duck river” in chapter 15, page 156 of Col. John C. Moore, Confederate Military History, a library of Confederate States Military History: Volume 9.2, Missouri:

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and a squadron of cavalry, moved to the mouth of Duck river to build a fort to obstruct the passage of gunboats to Nashville. But before it had accomplished this, Hood was defeated in front of Nashville, on the 14th day of December, and orders were received...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Duck River (Tennessee, United States) 910 2 0 0 0 user votes
Duck river (Alabama, United States) 0 0 0 0 0 user votes
Duck River (Alaska, United States) 0 0 0 0 0 user votes
Duck river (Arkansas, United States) 0 0 0 0 0 user votes
Duck River (Connecticut, United States) 0 0 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.