Carl Linnaeus, The Lapland Journey, translated by Peter Graves (Edinburgh: Lockharton Press, 1995), p. 73.
Lycksele Lappmark, 02/06/1732, ¶319:
The Ume river was beginning to flood. The weather had been very hot for some days and ice and snow were melting, thus causing the water in the river to rise so much that river travel was only possible with difficulty. The fullest spate normally comes at Midsummer.