Study on stream water quality of snow melting period in the Uono river basin

Considering water and Mass Balance

Abstract

The Shinano River branch Uono River is a class A river and flow to he north. A basin is a heavy snowfall area,in spring, strewm water quantity increases by snowmelted water.In such an area,It is necessary to consider quantity of snowmelting water,based on water and Mass balance.The snow repeats freeze thawing it in the mild winter ariae. In comparison with a cold winter area.Therefore the water behaves complicated ways,in the snow layer and the meltingsnow diverges into many branches, too. In this study,about the stream water quality,clarified a snow quality composition and examined the river quality of the water formation of the snowmelting period.