Upper Ritner Creek Splash Dam Recovery Project
Starting as a trickle on the slopes of Bald Mountain, Ritner Creek flows through forest, swirls around farmland and glides past homes to meet the Luckiamute River just past its namesake covered bridge. At first glance, much of the upper section of this small tributary looks relatively healthy and lush with vegetation. However, the appearance of upper Ritner Creek mirrors that of many other waterways in our area that have been scarred by the impacts of historical practices. Even though modern timber harvest guidelines aim to protect riparian (streamside) habitat, the effects of historical logging practices continue to negatively impact our waterways in many ways. One of the most damaging of these practices – splash-damming – has resulted in increased erosion, barriers to salmon and trout migration, and a loss of the large wood so important to healthy in-stream habitat. Today, exposed bedrock and the lack of gravel on the streambed are just a few of the issues facing Ritner Creek as a result of historical splash-damming and log drives, more than seventy years after these practices were abandoned in our area.
A mapping and analysis tool called NetMap has helped us identify upper Ritner Creek and other stream sections within our watershed that have the most potential to be restored to high-value salmonid habitat. Thanks in part to our use of this innovative analysis tool, the LWC was recently awarded an Oregon Watershed Enhancement Board grant to help restore Upper Ritner Creek, and set it back on the road to recovery. Hancock Forest Management and the Bureau of Land Management (BLM) are partnering with the LWC as landowners and contributors on the project.
Starting in June 2018, we’ll be kicking off the Upper Ritner Creek Splash Dam Recovery project. We’ll start with invasive weed control in order to allow native vegetation to recolonize a half-mile section of the project area that is dominated by reed canary grass. Then we’ll be installing 162 logs in 27 large wood structures along 1.6 miles of the creek. These log jams will help slow down the water velocity, reducing erosion and allowing gravel to settle to the streambed. Gravel is essential for both the macroinvertebrates that serve as a food source for native fish and as substrate for spawning adults. Log jams also allow the stream channel to meander through the floodplain forest, providing nutrients and refuge for juvenile fish during high winter flows. Looking towards the future, the LWC will ensure that large logs will continue to be naturally present within Ritner Creek by planting 1,100 native conifers throughout the project area.
Stay tuned for more project updates in the coming months!
Check out action footage of log placement in Upper Ritner Creek below!