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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Room 1000, Portland, OR 97204

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Fall at Mason Flats Wetland


Has this been a beautiful Portland fall, or what?!

bird on tree snag in wetland areawaterfowl at wetland  

Workers checking up on the Mason Flats wetland and water quality facility snapped these shots to share.  Environmental Services completed this project along the Columbia Slough this spring.  The native vegetation is already thriving and ready to help filter this winter's stormwater runoff. 

Here's our green-- and gold and red-- infrastructure at work!

fall colors at Mason Flats wetland 

Read more about the Mason Flats project here.


Multnomah Village Goes Green

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New green streets planted on Capitol Highway will soak up street runoff

Capitol Highway in Multnomah Village is an important parking area for the Village and a major thoroughfare for the neighborhood.  When it rains, oils, metals, brake dust and other pollutants from this high use area wash into nearby Vermont Creek, a tributary of Fanno Creek where water quality and habitat resources have been significantly impacted by development. 

Back in March, Environmental Services started construction on a series of green streets in the Village Core to treat pollutants running off the roadway and absorb rainwater with street trees. They've also been designed to encourage walking through widened sidewalks and bicycling through a reconfigured parking layout. Facilities were planted last month and are looking great. 


Learn more about the Multnomah Village Stormwater and Streetscape Project here. Also, check out more examples of green street projects here

REMINDER! Free Ecoroof Seminars

The City is again offering FREE Ecoroof Seminars on Friday, November 15th

The City of Portland Environmental Services is again offering FREE technical workshops for practicing or aspiring professionals interested in learning more about ecoroofs in Portland.


Ecoroof Seminars

Friday, November 15th  


Ecotrust - Billy Frank Jr. Conference Room (2nd Floor)

721 NW 9th Avenue



Material in this seminar will be specific to Portland, Oregon, and will cover technical information on the following topics:

  • Ecoroof fundamentals
  • Ecoroof design, construction, and permitting 
  • Ecoroof structure and materials
  • Vegetation and soil
  • Operations and maintenance
  • Monitoring and research

Continuing education credits will be available through ASLA and Oregon Landscape Contractor's Board. To register, please send an email to or call 503-823-7863. You'll receive a confirmation email with further details as we approach the event dates.  

More Spots for Salmon: A New Culvert on Stephens Creek!


Here's more news about in-water restoration projects constructed summer and fall. 

Today we’re excited to share pictures of a project near the confluence of Stephens Creek and the Willamette River (just south of this spot).  Perhaps you saw some of the action in person if you regularly travel SW Macadam Avenue (Highway 43).

Previously, Stephens Creek flowed through two corrugated metal culverts under the Lake Oswego trolley track and the regional pedestrian and bike trail. By state law, culverts must provide for fish passage, and these did not. 

old metal culverts on Stephens Creek

Multnomah County's Sellwood Bridge replacement project triggered the opportunity to replace the old metal culverts with a 16 foot wide, 90 foot long arched cement culvert.  This essentially creates a bridge over the stream instead of trying to fit the stream through a metal pipe.  

new cement culvert

The new cement culvert and restored stream improves off-channel fish habitat, so migrating salmon and other fish have a place to get out of the current to rest and feed.  The large size allows the stream to be more naturally connected to the tidal flows of the Willamette River and improves the ecosystem of the area.

Stephens Confluence natural area


This culvert project is right next to a project Environmental Services and partners completed in 2008 to restore the confluence of Stephens Creek.  Together, the two projects and other efforts in the larger South Portland Riverbank natural area are protecting and improving water quality and habitat for Portland’s people, fish and wildlife. 


The Sellwood Bridge area is still under construction, but you can visit Stephens Creek upstream, in the Stephens Creek Nature Park


Top: Old metal culverts under the rail line and trail, looking up stream.

Middle: New cement culvert that allows the stream to flow freely.

Bottom: Standing on the trail over the old culverts, looking at the restored confluence with the river.

Catch up on other news about in-water projects here and here

Stay tuned for another big culvert story from up north in the Columbia Slough!

Stormwater 101 Workshop This Saturday


Learn where the rain goes when it hits the ground in Portland

stormwater flowing to storm drainHave you ever wondered what happens after the water flows from the street into the storm drain and disappears? Curious about Portland's levee system?  Interested in the impacts of stormwater on our local rivers and streams?

Join our partners at the Columbia Slough Watershed Council for this interactive workshop about stormwater management in Portland.  Focus will be on the unique nature of stormwater management in the Columbia Slough Watershed, as well as an overview of stormwater systems and tools used citywide.  A few spots in the workshop remain, so register now!

Stormwater 101

A Workshop Focusing on Urban Stormwater Management

Presented by: Columbia Slough Watershed Council

Saturday, November 23

9:00 am-1:00 pm

Free. Modest donation requested.

Ages 14+

Location: Multnomah Country Drainage District

1880 NE Elrod Rd

Directions: (From Columbia Blvd) drive north on NE 21 Avenue. Turn left at T to entrance

(From Marine Drive) Drive south to Elrod Rd. Drive west about 1 mile to entrance

Sponsors: Multnomah County Drainage District and City of Portland Bureau of Environmental Services

Click Here For Registration and More Information, or call 503.281.1132

Sponsors: Multnomah County Drainage District #1

City of Portland Bureau of Environmental Services