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Cleveland Dam

Coordinates : 49°21′37″N 123°06′39″W / 49.36041°N 123.11075°W / 49.36041; -123.11075 The Cleveland Dam is a 91-metre-high (299 ft) [ 1 ] concrete dam at the head of the Capilano...

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Coordinates: 49°21′37″N123°06′39″W / 49.36041°N 123.11075°W / 49.36041; -123.11075

The Cleveland Dam is a 91-metre-high (299 ft)[1] concrete dam at the head of the Capilano River in Upper Capilano,[2]North Vancouver, British Columbia, Canada that holds back Capilano Lake, also known as Capilano reservoir. Part of the Capilano River Regional Park, it stores a portion of the Lower Mainland's drinking water.[3] It captures water from one of the three Metro Vancouver watersheds. Construction was started in 1951 and completed in 1954.[4]

The dam is named after engineer Ernest Albert Cleveland who envisioned the need for the proper maintenance of a pristine and efficient water supply as well as sustainable use of water resources. He served as the first chief commissioner of the Greater Vancouver Water District from 1926 until his death in 1952.

Accidents

The Cleveland Dam had several failures of the drum gate, causing water to be uncontrollably released into the Capilano River running through Capilano River Regional Park. Warning sirens were not installed until after the death of two men in 2020.[5]

In 1975, a nine-year-old girl was killed by a surge of water released from the dam.[6] The area had no warning signs or alarm at the time. Signs were later added to warn visitors of the potential hazards of the dam.[6]

In 2001, four fishermen were trapped in the river when the water level surged without a warning after the spillway's drum gate inadvertently dropped open.[6]WorkSafeBC issued several orders to reduce the risk to workers and the public, including but not limited to: "spillway gate lockout, access to the riverway by workers where lockout is not required, mancheck systems, emergency rescue and evacuation, public warning signage, and warning alarms".[6] However, some of the orders were ignored and public-facing warning alarms were never installed.[6]

El 1 de octubre de 2020, la compuerta de tambor de la presa se abrió inesperadamente durante el mantenimiento, provocando que el agua se desbordara hacia el río Capilano. El torrente de agua mató a una persona y otra desapareció y se presume muerta. [ 4 ] Varios visitantes del parque quedaron atrapados dentro del Parque Regional del Río Capilano. [ 7 ] Si bien muchos lograron escapar por sí mismos, cuatro personas tuvieron que ser rescatadas. [ 8 ] El nivel del agua del río Capilano aumentó rápidamente 3,58 metros (11,7 pies), impulsando 413 metros cúbicos (14.600 pies cúbicos) de agua por segundo en su pico registrado. [ 7 ] Estas tasas de flujo normalmente solo ocurren en la temporada de lluvias. Los pescadores en la orilla del río no tuvieron ninguna advertencia excepto el sonido del agua corriendo, ya que la presa no tiene un sistema de alarma pública para advertir sobre una crecida del agua. El popular sitio recreativo vio a muchas personas apresurarse a ponerse a salvo mientras que otras en áreas seguras presenciaron su huida. [ 9 ] Después de este accidente, se instalaron sirenas de advertencia en tres lugares a lo largo del río. [ 5 ]

La presa aparece de forma destacada en el episodio " Leech " de Smallville , donde Clark Kent pierde sus poderes por un rayo mientras intenta salvar a un compañero de clase de saltar desde la presa, así como en el episodio " Dicótico " de la segunda temporada. La presa se muestra en dos episodios de la serie de televisión de 1996, The Sentinel . También aparece en el episodio de la segunda temporada de la serie Supernatural , titulado "Simon Said". Un Cadillac cae por la presa al río Capilano en la película El sexto día . La presa también es un lugar central en la película Chicas malas de Valley High . La presa y el embalse también se utilizaron en El amanecer del planeta de los simios . La serie de televisión de Amazon , El hombre en el castillo, muestra la presa en varias escenas durante la primera temporada como un lugar de encuentro cerca de Canon City, dentro de la zona neutral. [ 10 ]

  • Commemorative plaque affixed to the Cleveland Dam along the walkway.
    Placa conmemorativa colocada en la presa de Cleveland, junto al paseo peatonal.
  • View of the spillway area from the Cleveland Dam walkway on a low water day.
    Vista de la zona del aliviadero desde la pasarela de la presa de Cleveland en un día de bajo nivel de agua.
  • The spillway area from the Cleveland Dam on a high water day (resulting from snowmelt in the mountains).
    La zona del aliviadero de la presa de Cleveland en un día de crecida (debido al deshielo en las montañas).
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Referencias

  1. ^Singh, Neil; Douglas, Ryan; Ahlfield, Steve (8 December 2005). "The case of Cleveland Dam". Water Power & Dam Construction.
  2. ^"Upper Capilano". District of North Vancouver.
  3. ^"Water Quality Report 2012"(PDF). Archived from the original(PDF) on 2014-03-27. Retrieved 2014-03-27.
  4. ^ abDunphy, Martin (2020-10-30). "Three workers fired in aftermath of Cleveland Dam incident that resulted in one dead, one missing". The Georgia Straight. Retrieved 2021-02-03.
  5. ^ abVancouver, Metro. "Cleveland Dam Safety Enhancements Program | Metro Vancouver". metrovancouver.org. Retrieved 2024-02-13.
  6. ^ abcdeWoodward, Jon (2020-10-06). "Order to improve safety at Cleveland Dam apparently ignored, despite several other failures". CTV News. Retrieved 2020-10-08.
  7. ^ ab"Witness to fatal torrent released from B.C. dam recounts moment 'all hell broke loose'". CBC News. 2020-10-01. Retrieved 2020-10-02.
  8. ^Little, Simon (2020-10-01). "Crews search for missing person after dam opened during maintenance, flooding Capilano River". Global News. Retrieved 2020-10-02.
  9. ^Luymes, Glenda (3 October 2020). "Search continues Saturday; one man still unaccounted for after Capilano dam releases surge of water". Vancouver Sun. Retrieved 2020-10-04.
  10. ^"Shoot: The Man in the High Castle Films Luke Kleintank & Alexa Davalos at North Vancouver's Cleveland Dam". Archived from the original on 16 January 2021. Retrieved 31 July 2016.
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