The otter: out by 1942, back by spread

1880 to the delisting, 2005

The going: The otter stands in Chapman's 1880 chapter in the rare-and-going company, and the state's scientific record fixes its Indiana ending: protected by law in 1921, the river otter nevertheless declined through the early 1900s under unregulated harvest and habitat loss and "was believed extirpated from the state by 1942." For half a century no otter swam the St. Joseph, the Elkhart, or any other Indiana river as a resident animal.

The return, with the county's exact part in it: The restoration is documented otter by otter. Between December 1995 and 1999, Indiana released 303 river otters obtained from Louisiana at twelve sites in six watersheds — the Muscatatuck, Patoka, Ohio, St. Joseph, Tippecanoe, and upper Wabash. The St. Joseph watershed releases, on the program's own published table, were two: Mallard Roost on the South Branch of the Elkhart River in Noble County, twenty-seven otters in January–February 1997 and January 1998; and the Pigeon River Fish and Wildlife Area in LaGrange County, twenty-five otters in January 1998. Both sites drain to this river — the Elkhart is the St. Joseph's great tributary — but neither stands in St. Joseph County, and the file prints that plainly: this county received no release. What it received was the spread. By 2005, the program's post-release accounting found otters reported in sixty-five Indiana counties, northcentral Indiana among the regions of widest distribution, with reproduction confirmed and family groups averaging better than four animals; the state removed the otter from its endangered list in 2005 and opened a regulated trapping season in 2015. The county's otters are the grandchildren of the Elkhart River and Pigeon River releases, arrived down the same water the fur trade once emptied — a return by colonization from a documented point of origin, printed at exactly that strength.

Sources:

1. Chapman, History of St. Joseph County (1880), Chapter II, p. 340.
2. Scott A. Johnson et al., "Prospects for Restoring River Otters in Indiana," Proceedings of the Indiana Academy of Science 116(1) (2007), pp. 71–83 — protection 1921; extirpation by 1942; 303 otters, twelve sites, six watersheds, 1995–1999; Table 1 (the Mallard Roost and Pigeon River sites, counts, and dates); the 1995–2005 distribution and reproduction record.
3. Indiana Department of Natural Resources releases, via Michiana Outdoors News (2012) and the Indianapolis Star (2026) — delisting 2005; otters in more than 80 percent of Indiana counties; the 2015 trapping season.