Sandimirov S.S. Catalogue of lakes in the Russian, Finnish and Norwegian Border Area. Finland, Jyvaskyla: Kopijyva Oy, 2008.

RUSSIAN LAKES 1.1. LAKE HAUKILAMPI Lake Haukilampi is located in the immediate vicinity of the town of Zalolyarny and runs along the main road to Nikel. The lake is not large (area of the lake is 0.25 km2) and is a shallow-water (maximum depth 2 m) lake of elongated form and of glacial origin. Its maximum length is 1.6 km, and maximum width 0.4 km. The points of maximum depth (2 m) are scattered throughout the whole water body. River Pilgujoki flows through the lake and then into River Namajoki. According to the landscape type, the watershed area consists of a combination of flat, low-lying areas of glaciolacustrine flatland and tectonic massifs with scattered outcrops of quaternary deposits reaching a height of 275.8 m (Pilgujoenvara hill). As a result of mining and excavation over a huge area, the natural landscape has been seriously damaged, the hill tops destroyed and the orography changed. The shores of the lake are not high, and are covered by birch stands. The water of the lake is colourless but, during flood periods, the colour of the water increases to 21 deg. The shores of the lake consist of silty deposits. Physico-geographical characteristics Watershed River Namajoki — River Pechenga Latitude 69°26.649' Longitude 30°45.749' Height above sea level, m 150.0 Maximum length, km 1.6 Maximum width, km 0.4 Maximum depth, m 2 Area, m2 0.25 Watershed area, km2 43.3 Study period 1989-2004 1.1.1. Hydrochemistry Owing to its close proximity to the Pechenganikel smelter complex, the lake is one of the most polluted in the Pechenga area. Airborne pollution emis­ sions have a considerable influ­ ence on the water quality. The water of the lake is neutral and its mean total mineralization is 178 mg/1, and mean alkalinity 228 peq/1. During flood periods the pH of the water falls to 6.59 and then returns to 7.12. The lake is characterized by high con­ centrations of base cations and anions, calcium (average 25.1 Hydrochemical properties pH 6.86 6.56-7.12 Electrical conductivity, mS/ cm 296 62-641 Ca, mg/l 25.1 3.18-66.4 Mg, mg/l 13.5 1.26-36.8 Na, mg/l 7.59 2.85-17.4 K, mg/l 0.74 0.38-1.36 НСОЗ, mg/l 13.9 9.5-22.5 S04, mg/l 113 8.2-320 Cl, mg/l 4.14 3.15-5.67 Total mineralization, mg/l 178 29.1-467 Alkalinity, peq/l 228 156-368 Catalogue o f Lakes in the Russian, Finnish and Norwegian BorderArea