Lierelva

Lierelva is a river located in the municipality of Lier in Buskerud county, Norway. The river's name directly translates to "the river of Lier". It originates in the forest areas north of the municipality, flowing generally southward through various landscapes before eventually meeting the Drammensfjord.

The Lierelva is a relatively short river, but it plays a significant role in the local ecosystem and hydrological system of the Lier area. Its course passes through agricultural land and some residential areas, influencing the local environment. Historically, rivers like Lierelva were important for transportation and power generation, though its primary function today is ecological.

The river's water quality has been subject to monitoring and improvement efforts over the years, reflecting a general trend of increased environmental awareness in Norway. Several small tributaries contribute to its flow, and its watershed encompasses a considerable forested and agricultural region. The presence of the Lierelva also supports local flora and fauna, contributing to the biodiversity of the region. Its outflow into the Drammensfjord is a notable feature of the local geography.