Through Lubāna flows the River Aiviekste. This is the only river that flows out of the biggest lake of Latvia – Lake Lubāns. The Aiviekste is the longest tributary of the River Daugava in the territory of Latvia. In the Lubāna municipality, there are two restricted areas: “Lubāna mitrājs” (“Lubāns Wetland”) and “Kapu ezers” (“Lake Kapu”). “Lubāna mitrājs” consists of three former restricted areas: “Pārabaine”, “Seldžu ozolu audze” (“Seldži Oak-wood”) and “Pededzes lejtece (“Lower Pededze”).
River Aiviekste, 2015. Photo: Zane Butlere
The restricted area “Lubānas mitrājs” is a unique natural complex of European and worldwide significance, which is very important in the preservation of specially protected species and biotopes.
In Lubāna municipality, there are numerous secular trees and other trees that are related to notable people and historical events. Among them, the most noteworthy are: the Money Oak, the Oak of Jānis Zābers, the Moroza Oak, the Dzērvenīte Oaks, the Oak-group near “Lettes” and the Lime-trees of Karātavu kalns (Gallows Hill).
The terrain is very flat. The territory of the municipality is occupied by great areas of marsh, which are separated by valleys of the Aiviekste and its tributaries. Within the territory lie the Olgas bog, which is being industrially manufactured, and several fens: Baltie klāni marshy meadows (4029 ha), Dzedziekstes bog (1862 ha), and Drikšņu peisa bog (1560 ha). Lake Salas (8.3 ha) and Lake Kapu (5.4 ha) – also called the Visagals Lakes – are situated in the municipality, too. Out of mineral deposits, sand, peat and sapropel can 3 be found in the territory of the municipality.