Most of Icelands´s rivers spring from glaciers. Their flow is much greater in the summer than in the winter, and the water usually has a milky grey or brown color, depending on the nature of the silt that it carries. The rivers erode the bedrock, and alluvial material is deposited on the lowlands. Except at the feed of a glacier, most rivers are filled with brown trout, arctic char, and salmon.
However different angles of sunrays let the rivers shine in endless color variations.
