The Lewis River Hydroelectric Projects - PacifiCorp

Caption:
Near the Lewis’s mouth, average annual precipitation is 37 inches, while
at higher elevations it can reach 140 inches. Most of this falls between
November and March, which translates at high elevation to massive
amounts of snow (exceeding 200 inches in many places). Snowmelt
sustains the river through the dry summers, providing water for fish
habitat, wetlands and wildlife. Winter warm spells and spring thaws
bring rain-on-snow events that can quickly raise river levels.
Caption:
Images:
The health of our watersheds is critical to our health. But it’s not always
easy to see (or act) from a watershed perspective. To do so, we need to
look beyond our own artificial boundaries to the natural boundaries of
our watersheds. What watershed do you live in What watersheds to you
work or play in How do your actions affect those watersheds How can
you work to keep those watersheds healthy, or to make them healthier
Map of North Fork Lewis watershed. Images from St. Helens eruption.
Scenics of small mountain streams, larger streams. Icons for watershed
stewardship caption.
Appendix 1: panel profiles Lewis River Draft I&E Plan page 53