Yup, I was there a few weeks ago. We got 100 mm of rain.Have none of you been to the Yukon ?
Glaciers can shed a hell of a lot of water during the hot summer months depending of course on where the glacier is located. Due to the pressure at the bottom of a glacier there can be a huge melt just for the fact pressure lowers the melting temperature.
Yup, and then they build up again over winter. Again, the glaciers don't add water to the system; they store water in winter and release it in the summer.