Statistics for occurrence #1 of “Mad River” in chapter 3 of Frederick H. Dyer, Compendium of the War of the Rebellion: Regimental Histories:

... 9. Ordered to San Francisco December, 1864, and duty at the Presidio till muster out. Company E --At Fort Vancouver till May, 1862. At Fort Humboldt till December, 1862. Skirmish at Mad River May 14, 1862. Daly's Farm, Mad River, near Arcate, June 6-7, 1862. Mattole Valley June 7, 1862. Fawn Prairie, near Liscombe Hill, June 8, 1862. At Camp Curtis December, 1862, to June,...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Mad River (California, United States) 27 8 1 0 0 user votes
Mad River (Connecticut, United States) 0 0 0 0 0 user votes
Mad River (Connecticut, United States) 0 0 0 0 0 user votes
Mad River (Illinois, United States) 0 0 0 0 0 user votes
Mad River (Massachusetts, United States) 0 0 0 0 0 user votes
Mad River (New Hampshire, United States) 0 0 0 0 0 user votes
Mad River (New Hampshire, United States) 0 0 0 0 0 user votes
Mad River (Ohio, United States) 0 0 0 0 0 user votes
Mad River (Washington, United States) 0 0 0 0 0 user votes
Mad River (Wisconsin, 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.