Holyoke Testing Flume

Holyoke Testing Flume

Company type	Research facility
Industry	Hydraulic engineering
Founded	1870
Defunct	1932
Fate	Closed
Headquarters	Holyoke, Massachusetts , United States
Owner	Holyoke Water Power Company

The Holyoke Testing Flume was a pioneering hydraulic research facility located in Holyoke, Massachusetts, managed by the Holyoke Water Power Company from 1870 until 1932. Over its operational years, it conducted 3,176 efficiency assessments on various water turbine models, establishing itself as a key player in the advancement of hydraulic engineering. Recognized by Robert E. Horton as the sole institution of its kind throughout the late 19th and early 20th centuries, the flume played a crucial role in standardizing American water turbine technology. Under the guidance of Clemens Herschel, who took charge and revamped the facility during the 1880s, it earned the distinction of being the "first modern hydraulic laboratory" both nationally and internationally. Herschel’s tenure at the flume also led to the creation of the Venturi meter, an innovative instrument for precise measurement of large water flows that continues to be widely utilized in industrial applications.

Research programs

A report from 1906 detailed three primary objectives for the flume’s research activities:

1. To evaluate all turbine wheels operating with Holyoke water power to determine their discharge rates and estimate water consumption by mills.

2. To conduct experimental testing on new wheel designs aimed at performance enhancement.

3. To assess standard American turbine models intended for installation in new plants.

Emerson's predecessors

The origins of the Holyoke Water Power Company's testing flume are linked to industrial developments in Lowell, Massachusetts. In 1868, Asa M. Swain constructed a flume designed according to specifications from turbine engineer James B. Francis to test turbines produced by Swain Turbine Company. James B. Emerson, who transitioned from ship captain to self-taught civil engineer, developed a Prony brake dynamometer and oversaw efficiency trials. Following early achievements, Emerson opened his flume for public use, financing tests utilizing Lowell’s water supply. Initial competitive evaluations identified Swain and Leffel turbines as leading in efficiency. Although Emerson later expressed doubts about these findings, their success drew the attention of Stewart Chase, representing Holyoke Water Power Company, who invited Emerson to move his operations to Holyoke with access to unlimited water free of charge:

Testing turbines is essential for achieving excellence... Relocate your work to Holyoke and utilize all necessary water free of cost.

Legacy

From the 1880s through the 1920s, the Holyoke Testing Flume transformed water turbine innovation across the United States by serving as a benchmark testing site for domestic manufacturers. Its efficiency evaluations were commonly referenced in U.S. legal proceedings as authoritative standards for turbine performance. During James B. Emerson’s era, the flume contributed significantly to enhancing both efficiency and cost-effectiveness of Francis turbines. Additionally, John B. McCormick developed and tested the first modern mixed-flow turbine—the Hercules—at this site. The facility was also where James B. Francis derived his weir formula for assessing turbine efficiency; despite some debate with European engineers over differing results, this formula became widely adopted throughout America.

This harmonization of flow efficiency measurements assisted industries and government bodies in estimating leakage across flumes and dams nationwide. However, as electrical power generation advanced toward higher horsepower levels, the flume’s equipment became outdated due to its sensitivity to output variations. Nonetheless, it was instrumental in inventing the Venturi meter—the inaugural accurate device for measuring large-scale flow—and indirectly influenced later technologies such as combustion turbines and jet engines.

In recent decades, Holyoke Gas & Electric has embraced this historical legacy. In 2018, PDI, Inc., a turbine design company based in Framingham, secured funding to develop a new turbine wheel prototype alongside Cofab Engineering. This prototype was tested within one of Holyoke’s canal locks under HG&E’s Clean Energy Test Bed Initiative, which aims to advance hydrokinetic technologies for commercial hydropower applications.

Although operations at the original flume concluded by 1932, since the 1950s Holyoke Gas & Electric has preserved its building as an electrical substation, continuing to supply hydropower and renewable energy to local consumers.

Successors

By 1910, this laboratory stood alone in its specialization for assessing water turbine performance. However, by 1930, it had become one among more than 60 hydraulic research facilities across the United States, many equipped with state-of-the-art technology. While its methods eventually became obsolete, the laboratory's design served as a model for future institutions and sparked congressional debates concerning the establishment of a national hydraulic research center.

The Alden Research Laboratory in Holden, Massachusetts, recognized as the oldest hydraulic testing facility in the U.S., remains operational today. Established by George I. Alden, the founder of the company who created the Alden dynamometer—an instrument tested at the Flume—the laboratory also features early Venturi meters that were displayed at the World's Columbian Exposition.

See also

• Holyoke Heritage State Park

External links

• #129 Holyoke Water Power System, Engineering History Landmarks, American Society of Mechanical Engineers
• No. 1041: James B. Emerson, Engines of Our Ingenuity, University of Houston's College of Engineering