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Monroe Street Hydroelectric Development

Monroe Street Logo

Monroe Street DevelopmentAvista's first hydroelectric development, Monroe Street has been producing power since 1890! In fact, the plant has been generating electricity longer than any other hydroelectric development currently operating in the state of Washington! The dam, rebuilt in 1974, was constructed at a natural waterfall (Spokane's "Lower Falls"). A new underground powerhouse was completed in 1992.

Adjacent to Riverfront Park, the scenic falls below Monroe Street spillway can be seen from five viewing areas:

  • Powerhouse viewpoint in Huntington Park 

  • Veteran's Park on the north bank

  • Monroe Street Bridge west of the dam

  • Viewing rooms at the Spokane Public Library on the south bank

  • Seasonal Riverfront Park gondola ride which passes over the falls.

The nearby Huntington Park Natural Area, owned and maintained by Avista for public use, offers opportunities for viewing urban wildlife, and contains a fenced promenade near the falls.

Development Information

  • Location: On Spokane River in downtown Spokane, just west of Riverfront Park

  • Initial Operation: 1890

  • Generating Units: 1 vertical Kaplan style turbineFishing from Boat Icon

  • Generating Capacity: 14.82 megawatts

  • Crest Length of Dam: 240 feet

  • Height Of Dam: 24 feet

  • Normal Reservoir Elevation: 1,806.0 feet (1,806.3 during viewing hours)

  • Storage: 30 acre feet

  • Minimum Flow: 200 cfs during normal viewing hours

 

 
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