• Olympic: Three Parks in One

    Olympic

    National Park Washington

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  • Spruce Railroad Trail Closed from Lyre River Trailhead to Devil’s Punchbowl

    The trail will be closed for improvements from the Lyre River TH to approximately 0.25 miles east of Devil’s Punchbowl. Work is expected to be completed by the end of October. The remainder of the trail will be accessible from the Camp David Jr. Road TH. More »

  • Safety Advisory: Mountain Goats

    NPS has received reports of aggressive mountain goats near trails at Hurricane Ridge, Royal Basin, Seven Lakes Basin, Lake of the Angeles, & Grand Pass. Visitors are required to maintain a distance of at least 50 yards from all wildlife. More »

Port Angeles Water Treatment Plant

Purpose:
The City of Port Angeles has historically obtained its potable water supply from a Ranney collector along the Elwha River, located about three miles upstream of the mouth of the river.

Because the Ranney collector draws both groundwater and surface water, the city’s water system has not been in compliance with drinking water standards. Water quality would be further affected by dam removal and the subsequent release of accumulated sediment.

The new Port Angeles Water Treatment Plant (PAWTP), which became operational in February 2010, allows the city to comply with water quality standards during the dam removal process and into the future.

Design:
The PAWTP is designed to provide up to 10.6 million gallons of treated water daily to the City’s water distribution system. The majority of water during dam removal will come from the Ranney collector, or the Elwha Water Treatment Plant when necessary.

Primary elements of the facility include an Actiflo/filter/clearwell/administrative building, a concrete backwash holding and recycle storage basin, and a concrete sludge drying bed with a sand layer for drying.

Useful Links:
Learn more about the PAWTP construction contract.

Read more about the PAWTP in the Elwha River Ecosystem Restoration Implementation Final SEIS (PDF).

 
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This webpage was made possible in part by a grant from Washington’s National Park Fund.

Did You Know?

star-shaped purple flowers growing in a crack of a rock

That the Piper's bellflower is unique to the Olympic Mountains? Named after an early Olympic peninsula botanist, the Piper's bellflower grows in cracks and crevices of high elevation rock outcrops.