Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

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The Bonneville Dam on the Columbia River near Cascade Locks, Oregon. The Bonneville Power Administration has ordered Pacific Northwest wind farms to cut production twice in recent days because it has a surplus of power from hydroelectric dams. The action renews a dispute from last spring, when the BPA curtailed wind turbines because the water from a large mountain snowpack left the region with more hydropower than the electrical grid could handle.


Date: June 3, 2011
Location: Cascade Locks, Oregon
Photographer: Rick Bowmer
Source: AP Photo


Photos downloaded from the Essential Lens site are cleared for educational use only.

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