 This would have flooded land into Canada approximately further, also extending up the Klesilkwa River, a Skagit River tributary, and provided the opportunity to generate about 272 MW of extra power, bringing the generating capacity to 732 MW.It wasn't until the 1970s when the High Ross project was finally ended.On the US side, the North Cascades Conservation Council inventoried the ancient forest of Big Beaver Creek which would have been flooded, and showed that City Light's statements that no unique forest environments would be lost were not true.