Lokka reservoir, Lapland, Mainland Finland, Finland
The Lokka Reservoir, also known as Lokan tekojärvi or Lokan allas, is a significant man-made reservoir situated upstream of the Luiro River in Sodankylä, northern Finland. It holds a unique position due to its variable size and role in regional water management.
Geographical Characteristics
Located at coordinates 67°49′12″N 27°45′00″E, the Lokka Reservoir exhibits a fluctuating surface area ranging from 216 to 418 square kilometers. This change is attributed to its water level variations, which can range from 240 to 245 meters above mean sea level.
Construction and Purpose
The reservoir’s construction began in 1967, marking a significant development in the control and regulation of water flow to the power plants located along the Kemijoki River. The Lokka Reservoir plays a critical role in hydroelectric power generation, contributing to the region’s energy infrastructure.
Ecological Aspects
Lokka Reservoir is renowned for its rich fish population, making it a vital ecological habitat and a popular spot for fishing enthusiasts. Additionally, it supports a population of white-tailed eagles. Unlike their counterparts in other regions, these eagles do not migrate south during the winter; instead, they remain near the reservoir, thriving on the fish provided by local fishermen.
Connection to Surrounding Water Bodies
The reservoir is connected to the nearby Porttipahta Reservoir via the Vuotso Canal, demonstrating a well-integrated system of water management in the region. This connection enhances the reservoir’s capacity to manage water levels effectively and supports the local ecosystem.