Power changes state: water, steam, current

1837–1978 AND THE HYDRO SURVIVAL

The power did not fail; it changed form twice, and the second change built a second dam: The race system's successor was not steam in the abstract but steam in the same plants, laid over water as boilers and engines freed the great works from the river's seasons — though the plant-level record of that layering at Mishawaka is thinner than its South Bend counterpart's, and the gap is named: no Mishawaka works' boiler-and-engine census of the kind the county histories give the bend's plants was reached first-hand, and the transition here is carried at the strength of its outcomes rather than its machinery. The outcomes are dated. In July 1909, at the Historical Pageant that closed the city's founding celebration, the switch was turned that lit Mishawaka's first electric streetlights — the Princess Mishawaka of the pageant performing the act, Mayor Charles Frank presiding, on the Story of Mishawaka section's record — electricity arriving in the city's life as ceremony before it arrived as utility. The current had a source upriver, and the source was the system's second act. Between July 1901 and October 1903 the St. Joseph & Elkhart Power Company built the Twin Branch dam east of the city, and on 16 December 1903 its current lit Elkhart — "Mishawaka Electricity Lights Elkhart," the papers said, in the Story of Mishawaka section's quotation. The dam's dimensions stand in the record in two tellings that are not reconciled here: the Story of Mishawaka section, on the city's history, gives a dam 400 feet long on a 21-foot fall; the National Inventory of Dams gives a gravity dam of timber-crib and earth construction, 41 feet high and 946 feet long, holding 10,000 acre-feet — and the Inventory's spillway, 402 feet wide, sits in the record beside the shorter figure without either carrier explaining the other. The generating figures conflict likewise and are printed whole in the Businesses section: one carried figure gives the dam as "capable of producing 2,600 kilowatts," while another records that "in 1957, the dam only generated 7,200 kilowatts"; neither is an I&M-published rating reached. The dam was only half the works. On the north bank stood the steam generating station — a huge complex, in the city historian Peter De Kever's Lost Mishawaka, whose chapter on the works is titled "When Mishawaka was the Power City" — that "once powered the entire city of Mishawaka and beyond" and is now gone. The station was in service by 1927, when the Twin Branch Railroad was organized to feed it: a line of under two miles hauling coal from a connection with the New York Central's Elkhart & Western, worked first by steam locomotives, then in the 1930s by storage-battery locomotives, with pantographs and catenary added during the Second World War to cut battery-charging time. The steam station's capacity in its working years was not reached in the record — the utility's regulatory filings and De Kever's full chapter are its settling sources — and the gap is printed rather than estimated. The succession's dates are firm: the dam passed to the Indiana & Michigan Electric Company in the merger of 1907; the steam station shut down in June 1978, and the little railroad was abandoned with it. But the hydro plant never stopped, and the succession has a living end: Indiana Michigan Power's own account of 2024 counts six hydroelectric plants on the St. Joseph River generating more than 22 megawatts together, and names Twin Branch, commissioned 1903 at Mishawaka, the oldest hydro facility in the American Electric Power fleet. The power that began as a two-foot-nine-inch fall, let by the foot through races, is sold by the wire a century later from the same river — and the question of its next license was an open public question as this section was written, with I&M's open house on the future of its hydro facilities set for 12 November 2026 at the Ironworks Event Center in Mishawaka. Steam was the middle state, and it is the one that vanished entire; the water outlasted it on both ends.

Sources:

1. This build's Spine section — the Twin Branch dam's construction (July 1901–October 1903) at 400 feet long on a 21-foot fall, its first electricity of 16 December 1903 lighting Elkhart, the passage to Indiana & Michigan Electric in 1907; and the pageant of July 1909, at which the switch lit the city's first electric streetlights.
2. National Inventory of Dams, IN03011 (Twin Branch Dam) — gravity timber-crib and earth construction, 41 feet high, 946 feet long, 10,000 acre-feet of storage, built 1903; the 402-foot controlled spillway as the Inventory's record carries it.
3. Monon Society, "Twin Branch Railroad" — the railroad organized in 1927 to haul coal to the generating station; the steam, battery and catenary course; and the June 1978 shutdown of the station and abandonment of the line.
4. Peter J. De Kever, Lost Mishawaka, the Twin Branch chapter, as discussed with the Mishawaka Historical Museum — "When Mishawaka was the Power City"; the north-bank steam complex that powered the entire city and beyond, now gone.
5. Indiana Michigan Power, the company's hydroelectric account (26 March 2024) — six hydro plants on the St. Joseph River at more than 22 megawatts combined; Twin Branch the oldest hydro facility in the AEP fleet, commissioned 1903 at Mishawaka; and Moody on the Market (10 November 2026) — the public-input process and the 12 November 2026 open house.
6. This build's Businesses section — the Twin Branch entry whole, including the two generating figures printed unreconciled; cross-referenced.