Haukivesi, South Savo, Regional State Administrative Agency for Eastern Finland, Mainland Finland, Finland
Lake Haukivesi, nestled in the serene landscapes of southeastern Finland, is not just a lake; it’s a pivotal part of the expansive Saimaa lake system. As the central basin of this intricate network, Haukivesi covers an impressive area of 562.31 square kilometers, ranking it as the 8th largest in Finland. Its unique geographical formation creates a convoluted shoreline adorned with a multitude of islands, each contributing to the lake’s majestic beauty.
Geographical Diversity and Rich Waters
This Finnish lake stretches from Varkaus to Savonlinna, displaying varied depths across its expanse. The northern part of the lake is relatively shallow, less than 20 meters deep. However, as one travels southeast, the depths increase dramatically, reaching up to 60 meters in areas like Kuivaselkä. The lake’s several regions, such as Siitinselkä, Tahkoselkä, and Iso-Haukivesi, each offer unique landscapes and ecosystems.
Vital Water Inflows and Outflows
Haukivesi’s lifeblood comes primarily from the east, with significant inflows through Tappuvirta, Oravikoski, and Haponlahti locks. There’s also a notable inflow from the north via Pirtinvirta in Varkaus. Remarkably, 80% of the water in the Saimaa system eventually finds its way into Lake Ladoga through the Vuoksi River, with Haukivesi playing a crucial role in this water journey.
Environmental Recovery and Preservation
Once burdened by pollution from local industries, notably pulp mills, Haukivesi has seen a remarkable recovery since the 1970s. Stricter environmental regulations led to improved wastewater treatment, revitalizing the lake’s ecosystem. Today, the lake’s water quality varies, reflecting the different characteristics of its inflows, mixing nutrient-rich waters from the north with purer eastern waters.
A Haven for Nature and Recreation
The southern end of Lake Haukivesi, known as Haapavesi, borders the city of Savonlinna, leading through Matarinsalmi sound into the Pihlajavesi region. Amidst its waters lies the Linnansaari National Park, a haven for nature enthusiasts and a testament to Finland’s commitment to preserving its natural beauty.
The lake’s name, translating to “pike water,” hints at its rich fish population. Anglers find an abundance of pike, bream, perch, and zander. However, fishing is regulated to protect the environment, including the endangered Saimaa ringed seal.