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Twin Branch Dam is the tallest dam with a hydroelectric power station on the St. Joseph River in Indiana. When it was first commissioned, it was called the Hen Island Dam. The name Twin Branch Dame comes the Twin Branch Creek which empties into the St. Joseph River just above the dam. The prior name for the dam, "Hen Island Dam," came from an island that used to be just below the dame where a riverboat resident used the island to raise geese and chickens. There were two islands, one named "Hen Island" and the other "Goose Island". Both islands were taken by the river by the 1950s.

Prior dam attempt

In 1835 was the first attempt to build a dam on the St. Joseph River near the Twin Branch Dam it was commissioned by the St. Joseph Iron Works. The attempt was abandoned in 1837.

Planning and legal battle

The dam was built by the Sanderson & Porter, company of New York City. The dam was commissioned on February 26, 1900. The company that commissioned the dam was the St. Joseph and Elkhart Power Company. It was incorporated on February 28, 1900, with a first issue of capital stock for $50,000. The company took over the Home Electric Light and Power Company.

They acquired the rights to over a thousand acres of land that would be flooded. Because of the size of the dam and the view it would impact the planned project upstream by the Indiana Power Company, litigation between the two companies was filed. The case was Indiana Power Company vs. St. Joseph and Elkhart Power Company St. Joseph C.C. The planed project for the Hen Island Dam was successful at the Circuit Court, the Indiana Supreme Court, and the United State Supreme Court refused to hear the case. The legal battle took over two years and was settled between the two companies.

The St. Joseph and Elkhart Power company was also sued by the St. Joseph Navigation Company in Federal Court, seeking an injunction to stop the dam. The case was filed because the dame would block navigation up the river.

The original plan was for the plant to have six alternating three-phase generators of 800 kilowatts each, with thirty large turbine wheels connected in tandem.

Construction

There were 30 arc lights that had been installed to allow construction to take place at night on the project. Over 2.5 million feet of lumber was used to construct the dam. The lumber was used to build cribbing and drive piles 20 feet into the river. There were over 2,000 piles driven into the river bed. They were filled with gravel and stone. The dam when it was built housed four horizontal turbine wheels that measured 51-inch.

In 1922 the dam was in need of repair Indiana & Michigan constructed a concert cover a steel frame. In the 1922 upgrades the power plant finial got the two new generators to bring the dams generators to the planed six. In 1957, the dam only generated 7,200 kilowatts of power.

History

When the Hen Island Dam was in the process of being built it was build as "The Great Dam Now Under Construction at Hen Island is a Stupendous Feat of Engineering. Interesting Legal Battle." Power was first produced in December 1903, while the dam was still under the control of Sanderson & Porter to the city of Elkhart.

In 1904, Charles A Chapin, purchased the interest that South Bend Electric Co had in the dam for over a $1,000,000. St. Joseph and Elkhart Power company merged with the Indiana & Michigan company in 1907.

A $3.4 million dollar upgrade was done to the power plant in 1989. Two generators were replaced as part of the upgraded in April of 1989. The generators that were replaced after a nine year being out of service, one was out of service because of shaft failure, the other was broken down in 1979, but was preforming only at 60% operation.

Operation

This hydro-electric dam is capable of producing 2,600 kilowatts. The dam has been owned and operated by American Electric Power/Indiana Michigan Power since 1922.

See also

• List of dams and reservoirs in Indiana

References

1. ^ "Harnessing the Broad St. Joseph River". The Indianapolis Journal. August 23, 1903. Retrieved June 29, 2024.
2. Dolley, John (May 1, 1933). "Preliminary Notes on the Biology of the St. Joseph River". The American Midland Naturalist. 14 (3): 193–227.
3. ^ "Nov 03, 1957, page 46 - The South Bend Tribune at Newspapers.com". Newspapers.com. Retrieved June 29, 2024.
4. "Power Plans". Richmond daily palladium. February 28, 1900. Retrieved June 29, 2024.
5. "Indiana Notes". The Indianapolis journal. February 1, 1901. Retrieved June 29, 2024.
6. "Higher Courts' Record Supreme Court". April 24, 1902. Retrieved June 29, 2024.
7. ^ "Million Dollars for a Dam: Argument in the case of the St. Joseph Navigation Company". The Indianapolis journal. January 7, 1903. Retrieved June 29, 2024.
8. "The St. Joseph Valley To Have a Mammoth Power Plant-Detail of Scheme" (PDF). Kalamazoo Telegraph. October 8, 1901. Retrieved June 29, 2024.
9. ^ "Turbine Pits and Foundation For Power House at Twin Branch Dam near Completion". The South Bend Tribune. October 11, 1902. p. 8.
10. "Power is Delivered from hen Island". The Indianapolis journal. December 18, 1903. Retrieved June 29, 2024.
11. "Charles A. Chapin: Reported to have Purchased a Big Power Plant at Mishawaka" (PDF). Kalamazoo Saturday Telegraph. February 27, 1904. Retrieved June 29, 2024.
12. ^ Dodson, Paul (August 13, 1989) . "Twin Branch hydro dam given a boost". Newspapers.com. The South Bend Tribune. p. 41. Retrieved June 30, 2024.
13. "CELEBRATING NATIONAL HYDROPOWER DAY". Indiana Michigan Power. August 24, 2022. Retrieved June 29, 2024.

• Indiana
• Water
• Renewable energy

• Buildings and structures in St. Joseph County, Indiana
• Dams completed in 1903
• Dams in Indiana
• Energy infrastructure completed in 1903
• Hydroelectric power plants in Indiana