Join Tryon Creek Watershed Council, Portland Parks & Recreation, and Friends of Marshall Park for a No Ivy Day work party to continue ivy removal in Marshall Park! Help restore this beautiful and important natural area by removing invasive species. …Continue reading →
Natural areas in urban settings, such as Tryon Creek State Park, provide habitat and help preserve native species and wildlife within an area that would otherwise imperil them. As a place for people to see, experience, and appreciate nature often, urban natural areas can help to develop an understanding for the importance of conservation – particularly for water systems such as the Tryon Creek watershed, which runs both through a high habitat quality natural area as well as urbanized neighborhoods.
Cutthroat Trout with beautiful orange maxillary about to receive a PIT tag for monitoring.
The main stem of Tryon Creek attracts fish, a majority of which are native species. During the summer, Tryon Creek has cooler water temperatures than the Willamette River, serving as a cool water refuge for fish and wildlife. In summer 2018, monthly fish surveys (using netting and electrofishing to tag fish) gathered monitoring data on fish growth and travel. A majority of the fish surveyed were Coho salmon (86); others included Chinook salmon (40) and Coastal Cutthroat trout (9). These sensitive fish species are an important part of the ecosystem whose presence contributes to stream health. As fish move through and unsettle sediment, the organic matter in the sediment circulates; also, their intake and exchange of nutrients in the creek balances the water’s chemistry, protecting its quality. These fish are mostly present in the stretch of Tryon Creek between Highway 43 and the Willamette. What affects the creek system’s ability to provide fish habitat?
City of Portland’s Bureau of Environmental Services’ 2015 Watershed report card for Tryon Creek indicates the abundance of fish and wildlife in Tryon Creek should be higher. A principal reason for the lack of fish throughout the stream system is the presence of culverts acting as fish passage barriers, particularly under Highway 43. Culverts are structures built to allow water to flow under a road or trail which can change the stream’s flow and placement of sediments and soil. For fish to be able to pass through culverts, the culvert must be at an angle close to the natural angle of the stream and at a height that fish can jump into to access. These barriers prevent fish from traveling throughout the watershed to find high quality habitat and spawning.
In 2008, the Highway 43 culvert was retrofitted to be more fish-accessible. Fish surveys can help us see the progress -including passage- of resident and anadromous (sea-migrating) fish. Tryon Creek Watershed Council has been working steadily to replace the entire culvert, which will be a large project! Continued monitoring and fish passage projects, driven by the enthusiasm of people moving these projects forward, will help the Tryon Creek watershed to be able to better provide habitat for fish and wildlife!
Authors: Andrea Russell, SummerWorks PDX intern; Patrick Blanchard, Oswego Lake Watershed Council Coordinator; edited by Alexis Barton, TCWC Program Coordinator
JOIN THE TRYON CREEK WATERSHED COUNCIL FOR OUR ANNUAL STATE OF THE WATERSHED SCIENCE TALK!
Thursday, May 31, 6 – 8pm at Lucky Lab Public House in Multnomah Village
We have fish-friendly habitat in our creek system! That’s right – the US Fish & Wildlife Service and Portland Bureau of Environmental Services recently published a paper about our Tryon Creek Watershed – and they will be presenting their findings and chatting about fish, wildlife, and habitat at the Tryon Creek Watershed Council’s annual State of the Watershed Event. This year being held at the Lucky Lab Public House in Multnomah Village, with grant support from the City of Portland and Southwest Neighborhoods, Inc. Pizza and salad provided but registration required – TICKETS HERE!
We are very excited to share that the US Fish & Wildlife Service recently published a paper,”An urban stream can support a healthy population of coastal cutthroat trout” in Urban Ecosystems. They found the characteristics of Coastal Cutthroat Trout in …Continue reading →
We’re partnering with the PCC Sylvania Habitat Restoration Team to host a No Ivy Day site on Saturday, October 28! Join us for a free, family-friendly, ivy-pulling event. We’ll provide tools, gloves, and snacks. Contact Terri Preeg Riggsby for more …Continue reading →
As many of you have probably heard by now, I am leaving my role as Volunteer Coordinator for TCWC at the end of June. My husband recently graduated law school and we will be relocating to California where he will …Continue reading →
FREE Watershed Stewardship Training April 9, 1 – 4:30pm Classroom located in the Tryon Creek Nature Center, 11321 SW Terwilliger Blvd Join the Tryon Creek Watershed Council and the Friends of Tryon Creek’s Backyard Habitat Program for an informative (and FREE) watershed stewardship …Continue reading →
Meet Council Member Carl Axelsen Carl Axelsen is a citizen volunteer with the watershed council who became involved about ten years ago. He was initially hired as the Tryon Creek Watershed Council Coordinator and served in that role for two …Continue reading →
November 25, 10am-2pm Tryon Creek Nature Center 11321 SW Terwilliger Blvd, Portland, OR 97219 TCWC will be hosting a native plant sale for Green Friday at Tryon Creek State Natural Area. Our plant sale is one of the many fun …Continue reading →
Meet GIS volunteer Erin Miller Erin initially became involved with the TCWC from April-June of this year through the Portland Community College GIS Certificate program. For her community partnership project, she helped to map the locations and catalog the conditions of …Continue reading →