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

Fig. 56. Си (liver), Ni (kidneys), Pb and Hg (muscle) concen­ trations in fish from Lake Stuorajavre (цд/д dry weight). Pb in muscle Hg in muscle sг- s£• ■О . о т I от X о 2.14. LAKE SUOPATJAVRE Lake Suopatjavre (watershed of the Riv­ er Kautokeinoelva) is located 306 km to the west of the townofNickel. The oval­ shaped lake is not large (area of the lake 1.88 km2), nor deep (maximum depth 12 m), and is of glacial origin. The maxi­ mum length is 4.0 km and maximum width 0.8 km. The points of maximum depth are located in the central part of the lake. According to the landscape type, the watershed area belongs to the forest- tundra zone, with heights of up to 523 m. The eastern shore is high and marshes are widespread in the south. The lake shores are covered by shrubs and birch woodland. The water in the lake is colourless but, during periods of high water and high precipitation epi­ sodes, the colour of the water increases to 69 deg. and becomes slightly yellow­ ish. The lake is used as a landing area for small aircraft. 2.14.1. Hydrochemistry The pH of the water in the lake is close to neutral, and the water has a low total mineralization (average 25.4 mg/l) and alkalinity (average 260 |ieq/l). The lake has low concentrations of base cations Physico-geographical characteristics Watershed River Kautokeinoelva— River Altaelva Latitude 68°56.246' Longitude 23°05.448' Height above sea level, m 323.0 Maximum length, km 4.0 Maximum width, km 0.8 Maximum depth, m 12 Area, km2 1.88 Watershed area, km2 124.0 Study period 2005-2007 Hydrochemical properties pH 6.89 6.56-7.23 Electrical conductivity, 34 mS/cm 25-45 Ca, mg/l 3.69 2.48-5.57 Mg, mg/l 1.08 0.70-1.62 Na, mg/l 1.12 0.88-1.57 K, mg/l 0.51 0.46-0.62 HC03, mg/l 15.9 10.3-23.8 S04, mg/l 2A 1.9-3.6 Cl, mg/l 0.47 0.39-0.65 Total mineralization, mg/l 25.4 17.1-37.4 Alkalinity, neq/l 260 168-390 108 Catalogue o f Lakes in the Russian, Finnish and Norwegian BorderArea