Дип-Ривер: История атомного города и его жизнь.

At the same time, its economy and development was further boosted by the construction of the Des Joachim Hydroelectric Generating Station and dam on the Ottawa River at Rolphton, which opened on June 28, 1950. The town was the subject of a Maclean's Magazine article in 1958 by the noted Canadian journalist, editor, and author Peter C. Newman. Entitled, "Deep River: Almost the Perfect Place to Live," the article took a sardonic take on the town as a very odd and isolated place populated by mostly young, male, highly educated and bored scientists and technicians struggling to find things to do with their time: "The Utopian town where our atomic scientists live and play has no crime, no slums, no unemployment and few mothers in law." In 1962, the experimental Nuclear Power Demonstration or NPD power reactor started up as a prototype for later CANDU reactors. This was operated by Ontario Hydro, which later used it as a training facility for new employees in their Nuclear division. This brought many more temporary residents to the town. The NPD was shutdown in 1987; the nuclear fuel was removed from the site, along with non radioactive equipment, leaving only the building shell and the nuclear components (reactor, tanks, pipes etc.) that had become radioactive in place to wait for further decommissioning. The facility has been waiting for final demolition and permanent disposal of the radioactive nuclear components for over 30 years.

Deep River is located at a latitude of 46°06' north and longitude 77°30' west, in the Boreal Forest biozone, and has an area of 50.87 square kilometres. The town sits on the section of the Ottawa River referred to as "La Rivière Creuse" (the "Deep River") by 17th century French explorers, and which later was at the heart of Canada's 19th century timber trade.

Deep River boasts many active clubs. Among the numerous community accomplishments is the creation of the Deep River Symphony Orchestra, formed in 1951, making Deep River one of the smallest towns to have a symphony orchestra. The Deep River Choral Group, and Deep River Community Band also host multiple concerts every year. Cross country skiing is a popular winter recreation. Avid skiers of the Deep River Cross Country Ski Club created the Silver Spoon trails and an annual race that brings contestants from across Ontario. Another popular event is Summerfest, a festival held once every two years, hosting many local and famous artists including Sloan, Wide Mouth Mason, Amanda Wilkinson, Daniel Lanois, Mobile, and K'naan. The festival also organizes many recreational events, including the Cross River Swim. Deep River is generally known to have picturesque scenery, excellent boating along the broad river, and good hiking in the hills across the Ottawa River. Deep River also has a community pool, fire department, police department, ski hill, golf course, curling rink, yacht and tennis club, and a library. Deep River is home to two museums: The Canadian Clock Museum, home to an extensive collection of clocks from The Arthur Pequegnat Clock Company, and the Society for the Preservation of Canada's Nuclear Heritage, founded in 2017, which collects, safeguards, and promotes documents, artifacts, memorabilia, and knowledge associated with the history of the Canadian nuclear industry.

In the 2021 Census of Population conducted by Statistics Canada, Deep River had a population of 4175 living in 1866 of its 1981 total private dwellings, a change of from its 2016 population of 4109. With a land area of , it had a population density of in 2021.

Deep River's weekly, The North Renfrew Times, has been published by the Deep River Community Association since the Town's earliest days.

Deep River has achieved a degree of notoriety in the films of David Lynch. As well as being referenced in Blue Velvet, the town is specifically mentioned in Mulholland Drive, Lynch's surreal film about a young actress struggling to cope in Hollywood. Naomi Watts plays a character named Betty at the beginning of the film.