Good example of large water feature in an alpine setting done well. Stones and boulders should be of the same rock type/color and weathering, and be planted in such a way as to suggest they are the weathered portion of a massive formation just below.
Blue Fescue non-native - small mounding blue- grey grass. I love heavily mixing grasses with flowering perennials and more structural plants. They add a softness and intrigue. Low water and LOW maintenance.