Supplemental Information, Des Moines Creek Flow Augmentation Facility

Notes

A letter from Water Resources Consulting L.L.C. to the Washington State Department of Ecology presenting data showing that Lake Youngs outlet temperatures exceed 16°C from mid-June through mid-October, making Seattle Public Utilities water unsuitable for temperature amelioration in Des Moines Creek. The letter argues this undermines the Port Of Seattle’s claim of having secured an adequate water supply for flow augmentation, and includes a graph of Lake Youngs outlet temperatures.

V V