The Rocky River Basin Project
Below is CL&P's map of Candlewood Lake showing the properties bordering what would become the Rocky River Basin. The map below was used by CL&P in the late 1920s and a copy was likely given to Lynn Taborsak by CL&P staff to be used for her paper. Click this link to view a large version of the map.
Candlewood Lake's Beginnings
Connecticut Light and Power Co. first hydroelectric project was the Stevenson Dam built on the Housatonic River right above the town of Derby. Completed in 1919, it impounded what came to be called Lake Zoar.
The combined capacity of the Stevenson and Bulls Bridge stations was only ten thousand kilowatts, and the basic problem of regulating the flow of the Housatonic River was unresolved by the construction. The Stevenson Dam also doubled the water load of the Housatonic. In 1922, plans were made to provide more electricity to the area and to better control the flow of the Housatonic. The solution involved a proposed reservoir that would connect the various creeks flowing between the steep hills coming south from Candlewood Mountain, and also subsume the natural ponds in the area: Neversink, Barses, Creek (or Crick), and Squantz.
For the most part, the area of this basin was a swamp. CL&P proposed to fill the basin partially by natural drainage and part from a pump on the Housatonic. In 1919, CL&P had already convinced the Connecticut legislature to give them the right to divert water from the Housatonic back into the Rocky River, where it could be dammed and stored for release in periods of low water flow. For the basin to be complete, they would also need to excavate land to connect two "fingers" in the northeast of the valleys going up through Brookfield, New Milford, and Sherman. The proposed Rocky River Basin project was unique at the time, not only for its overall size and scope but for the fact that a massive pump would be required to bring water up from and down to the Housatonic.
Elevation Criteria and Purchasing:
In 1926, at the southeast end of the lake in Danbury, Jeffery Lewis and a small crew set out surveying where the water line of the basin would be, and therefore, what land would need to be acquired. The water line was planned to be at a 440-foot elevation. Elevation contours were given a classification system: the land at the 440-elevation line, the land above the 440-line; and the land would be isolated by the rising water level. This classification was important for the CL&P agents as they set about purchasing land in the five towns touched by the basin.
CL&P's agents, Edmund Bly, J.T. Rogers, and Mr. Beach, set out to contact land owners. A local Danbury lawyer, Thomas Keating, was hired as their legal advisor for title searches. From the Grantee and Grantor lists at the City of Danbury's Clerk's office, one can see purchase transactions that took place between 1926 and 1927. Much of the land purchases were credited to CL&P's secretary-treasurer, C.L Campbell. Campbell is the named grantor for CL&P's final acquisition of the land in 1929 and 1930.
In preparing the basin, CL&P cleared 31 roadways, exhumed two cemeteries, and acquired over 5,000 acres of property. All of the purchasing excavation and flooding was completed within a two-year span, 1927-1928.
Ironically, in the early 1900s, a large Native-American canoe had been uncovered in the mud of Squantz Pond (New Fairfield) which suggested that the area of the basin had been a large waterway centuries before. The area was also widely held to have been frequented by Native-Americans. Evidence for much of that activity is now under water.
To learn more about the colonial settlement and Native Americans that occupied Candlewood Lake click the News-Times article below written by Dr. Weinstein (Archeologist and WCSU History & Non-Western Cultures Professor)
http://www.newstimes.com/opinion/article/Who-were-Danbury-s-first-peoples-The-Pahquioque-1043928.php
Colonial settlement of Jerusalem in New Milford sits about 4 miles back from the mouth of Rocky River tributary. Hine’s mills and the Ferris family land depicted on the interactive map are essential to the creation of the Rocky River Power Plant.
The passage below is from: Rocky River Hydroelectric Station- A National Historic Mechanical Engineering Landmark" from 1980. It summarizes nicely the engineering aspects behind Candlewood.
The first known pumped-storage development was in Zurich, Switzerland, in 1882....At that time, the Rocky River traveled north through the hills, passed through the village of Jerusalem, and ran into the Housatonic north of the center of New Milford. To flood the Rocky River basin, 5,420 acres had to be prepared. There were four ponds, Squantz, Barse, Crick and Neversink. The valley was occupied by farms, homes, schools, churches, and two cemeteries. It was necessary to abandon homes, relocate highways and cemeteries and clear timber and brush from 4,500 acres below to 440 contour line. Construction of the main dam and power plant, along with four smaller dikes to take care of the low points in the basin, began in 1926.
The main dam is located on Rocky River about one mile above its confluence with the Housatonic River. An earth-filled dam with a concrete and timber core wall, it is 952 feet long and has a maximum height of 100 feet. The dam site housed 600 men, and four smaller camps were located throughout the basin. Known as UGI-ville, the community consisted of houses, shops, a mess hall, offices and other buildings. As many as 1,000 men worked on construction which was completed in 1928. Near the main dam is a 3,190-foot canal leading from the reservoir to the intake. The canal dike is practically an extension of the main dam. In 1926, Connecticut Light and Power engineers created plans to pump water from the Housatonic River uphill into the reservoir, then letting the water run back downhill into large turbines, which turned to create electricity during the day. The Rocky River plant's pair of 8,100-horsepower pumps together are capable of lifting a million gallons every four minutes. At the time of their installation, they were largest of their kind in the world.
Further readings and newspaper articles on Bulls Bridge Station, the Stevenson Dam project or Rocky River:
- Danbury News Times article: "Flooding of the Biggest Connecticut Lake Begins December First," October 27, 1927. (Page 1)
- The Hartford Courant article: "Governor Holcomb Urges Harnessing of all Connecticut Rivers: Believes Stevenson Dam Reflects Credit upon Entire State," Oct 19, 1919. (Includes illustration of Stevenson Dam)
- http://www.bullsbridge.com/Hydroelectric_Plant_Story
- http://csengineermag.com/article/pumped-storage-power-plant-upgrades-penstock/
- www.ct.gov/deep/lib/deep/fishing/stockingmaps/housatonicriverbullsbridgetma.pdf
- http://www.candlewoodlakeauthority.org/lakehistory