With so much going on at the Pelton Round Butte Hydroelectric Project it can be hard to keep up. We want to make it easy for you, so visit this page often for regular updates about events, ongoing research and programs, and other topics of interest.
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Dec. 15, 2016
We sometimes hear questions about how the Pelton Round Butte co-licensees make decisions about our fish passage, upper basin salmon and steelhead reintroduction and water quality programs. A key part of the answer is the Pelton Round Butte Fish Committee, which is made up of 10 natural resource agencies and five non-governmental organizations with fish and water quality expertise.
The Committee typically meets monthly to review study plans, data and reports related to the Pelton Round Butte fish passage and water quality programs and advise the co-licensees on management decisions. The most recent meeting was on Dec. 8, and was attended by representatives from six natural resource agencies and two non-governmental organizations.
At the meeting, the Fish Committee welcomed the new ODFW fish pathologist, Stacy Strickland. Although her position is funded as a requirement of our license, by PGE and the Confederated Tribes of Warm Springs, she works for and answers to ODFW, evaluating fish health issues related to the reintroduction and hatchery programs.
Next, Brad Houslet, from the CTWS Natural Resources Branch, presented preliminary results of recent sockeye genetics testing. In summer 2016, 535 adult sockeye returned to the Pelton trap – far outstripping returns from prior years. Genetic samples were taken on all returning fish. To date CTWS has analyzed 384 of the fish, and has confirmed that over 94 percent of the samples examined to-date originated from the upper Deschutes basin – meaning the fish had reared in the upper basin, migrated downstream via our new fish passage system, and completed the round trip to the ocean and back. With the support of ODFW and the CTWS, PGE released the majority of returning sockeye above Round Butte Dam to spawn naturally in the upstream tributaries.
After Brad’s report, PGE provided an update on the lower Deschutes smolt survival study results. The study evaluated the survival of radio-tagged Chinook, steelhead and sockeye smolts that were captured and tagged at the selective water withdrawal tower, released in the lower Deschutes, and tracked to the mouth of the river. We evaluated daytime versus nighttime smolt releases, concluding that nighttime smolt releases are an effective way to improve survival to the mouth for Chinook and steelhead. As a result, the licensees will release smolts at night during the 2017 spring migration.
The Committee then received an update on the Phase II: Gravel Augmentation Plan from PGE and Stillwater Sciences. The study plan was provided to the Committee on Dec. 7; comments are expected back from the Committee by Jan. 18.
The next Fish Committee meeting will be held on Jan. 17. See the Our Partners page to get more information about the Fish Committee, and learn about other partners we collaborate with in our work to benefit fish and water quality on the Deschutes.
Nov. 8, 2016
As the second season of an intensive, three-year water quality study on the Deschutes River wraps up, Lori Campbell, water quality specialist with Portland General Electric, will have to wait one more year for independent consultants to deliver results and modeling from the study, expected late 2017 or early 2018.
The study spanned 29 locations in the project reservoirs and the lower Deschutes River. Water quality technicians collected a lot of data and samples, including measurements of temperature, dissolved oxygen, pH, conductivity, alkalinity, chlorophyll a, chloride, algae growth, nutrients and zooplankton.
Why such an intensive study? Portland General Electric and the Confederated Tribes of the Warm Springs Reservation of Oregon are responsible for water temperature management where the river exits their jointly-owned Pelton Round Butte Hydroelectric Project. Our temperature management goal is to closely match water temperatures that would be expected at that point on the river, based on conditions on a given day, if the hydro project were not there.
When one factor changes in the river, such as temperature, other factors in the river ecosystem will likely be affected. PGE and the Tribes commissioned this intensive study to better understand and document any changes that may have occurred since the temperature management program began in 2010.
Oct. 31, 2016
“Together We Make It Happen.” This was the message from Brad Chalfant, Deschutes Land Trust’s executive director, regarding the restoration of Whychus Canyon Preserve.
On Oct. 11, staff from the Deschutes Land Trust hosted an event at the Preserve to plant native vegetation in the newly-reconstructed riparian zone and channel of Whychus Creek. Staff from both PGE’s Pelton Round Butte Office and the CTWSRO (Confederated Tribes of the Warm Springs Reservation of Oregon) participated. Together with Deschutes Land Trust staff, they planted native trees, sedges, grasses and shrubs in the riparian zone.
“We’re letting the creek decide where it wants to flow,” was the message from Sarah Mowry, the outreach director with Deschutes Land Trust, explaining the goal of the restoration efforts.
Whychus Canyon Preserve includes 930 acres protecting four miles of Whychus Creek. Back in the 1960s the creek was straightened and bermed for flood control and other reasons, but with the unintended result of diminished fish and wildlife habitat. With the help of multiple partners including the Upper Deschutes Watershed Council, Deschutes National Forest, CTWSRO and PGE’s Pelton Round Butte Fund (for land acquisition), this restoration project restored 1 mile of Whychus Creek, with more planned for 2017.
Restoration includes putting the creek back into a meandering channel with side channels that provide critical habitat where fish can spawn, rear, and hide. Chinook salmon and adult steelhead have already returned to Whychus Creek since reintroduction efforts began.
Oct. 18, 2016
If you see a crew from PGE in the creek using a backpack that looks like something out of a Ghostbusters movie, you would be witnessing a crew electrofishing. This method is what biologists use to capture fish using an electrical current. When the electrofisher is activated, the electricity causes the fish to swim in a controlled way that makes them easy to net.
As you can imagine electrofishing requires a special permit, expertise, and safety measures. The purpose of electrofishing is to catch as many fish as possible to obtain a population estimate; all fish are returned to the stream unharmed after the survey. These surveys have been going on prior to the salmon and steelhead reintroduction efforts in 2007 and every year after. Electrofishing surveys are conducted where fish have been released which is in the mainstem Deschutes River and its tributaries.
After hearing reports from landowners of adult sockeye salmon spawning in the upper Metolius tributaries, PGE biologists headed out recently to observe them firsthand. On a quick afternoon field trip we found three tagged adult sockeye on spawning grounds upstream of the Metolius River. These are sockeye that are near completion of their life cycle, beginning with rearing in Deschutes Basin tributaries then migrating to the ocean to grow and returning to fresh water one to two years later to spawn.
Over 500 sockeye have returned to the Pelton trap, to date, in 2016. Of those caught at the Pelton trap, 445 were passed over the dams, and the rest were used as brood stock at the Pelton Round Butte Hatchery. We gave sockeye that were caught at the Pelton trap a neon green tag (some were also given a radio tag) and released them in Lake Billy Chinook. Using radio telemetry, we’ve found that it takes about one month for an adult sockeye salmon to migrate to the spawning grounds.
Adult sockeye salmon have been observed on various tributaries throughout the upper Deschutes River Basin – a promising indicator in the ongoing, collaborative effort between the Confederated Tribes of the Warm Springs Reservation Oregon, Oregon Department of Fish and Wildlife and Portland General Electric to restore wild salmon runs to their historic habitat in the upper Deschutes Basin.
Have you ever noticed large pieces of wood in the lower Deschutes River with yellow tags? These tags mark wood that PGE has taken from above Lake Billy Chinook and placed downstream of the Reregulating Dam. We have done this for the past ten years, placing over 300 pieces of large woody debris into the lower river. Each piece is marked with a small round metal tags and a large yellow plastic “Do Not Disturb” tag.
Why place wood in the lower river? When trees along the stream bank die, they fall into the river, where they help stabilize stream banks and provide habitat for salmon and other aquatic life. When the Pelton Round Butte Project dams were constructed by PGE in the late 1950s and early 1960s, large wood from tributaries ended up in Lake Billy Chinook rather than being naturally transported downstream to the lower Deschutes River.
Our large woody debris management program is designed to reconnect large wood transport to the lower river. The logs we place in the lower river are not anchored, so we record the location of each piece when initially placed and then annually track its movements downstream by floating down the river with a boat along the banks and log jams looking for logs with visible tags.
We recently spent two weeks looking for large woody debris from the Reregulation dam down to Harpham Flats. When we find a marked log we record its tags, add new yellow plastic tags if the old ones are faded, and take a GPS point. Some logs we have tracked for several years as they slowly move down the river. Some logs move once, wash up on shore, and don’t move again. Others we never see as they likely become incorporated into downstream habitat or break up into multiple pieces.
An example of one of our tags. This log was found between Trout Creek and White Horse Rapids.
Fallen logs provide habitat for salmon and other aquatic organisms.
This year’s sockeye run is still breaking records, with 73 returning adults captured on Monday, August 8 alone and released to the upper Deschutes River tributaries to spawn.
At this point more than 300 sockeye have returned to the Pelton Round Butte Project so far this year – more than three times the number that have returned in any single year since PGE and the Confederated Tribes of the Warm Springs began the reintroduction program in 2010 to bring these fish back to the upper Deschutes basin after a four decade hiatus.
The run is expected to continue for several more weeks, so stay tuned for more updates or keep an eye on our daily fish counts.
Adult sockeye are returning to the Pelton Trap in record numbers this year! So far we have captured 176 adults. Sockeye began returning to the trap in 2011, with the previous record in 2012 with 86 returns. But that high was smashed in the week of July 25, alone, with 144 returning adults. This is exciting news for the Deschutes River.
Once collected at the trap, each sockeye is measured, its fin clipped for genetic sample, scales pulled for aging, and each is sexed using a portable ultrasound machine for accurate sex ratios. This data collection is a joint agency effort between PGE, Oregon Department of Fish and Wildlife, and the Confederated Tribes of the Warm Springs.
Using the portable ultrasound machine to determine sex
Collecting scales for aging each fish
July 13, 2016
Thanks to everyone who joined us for the workshop this year! Our 22nd Fisheries Workshop was held in Madras on June 22 to 23. Our primary goal was to increase participants understanding of the Pelton Round Butte Project and other projects ongoing in the Deschutes river basin.
A variety of topics were covered during the workshop and the presenters did an outstanding job of sharing their expertise with everyone. If you would like to contact any presenter with questions please see the abstracts and biographies .
Mark your calendars for the 2017 workshop – June 27 to 29. We’re expanding next year’s event to include a fish facilities tour on the 27th. Fisheries presentations will be on the 28th and habitat presentations on the 29th. Check back with us next year for more information.
PGE and the CTWS wish you the best over the summer and through the remainder of the year. We hope to see you next June for the 2017 Fisheries Workshop.
Sincerely, Pelton Round Butte Project Team
June 30, 2016
This week we’ve been out snorkeling in the Metolius River and Lake Creek to look for juvenile Chinook. As part of salmon reintroduction above Round Butte Dam, Chinook fry have been released into the Metolius and its tributaries annually since 2008.
There are two snorkel sites on the main stem Metolius and three sites on a tributary called Lake Creek. Two snorkelers make two to three upstream passes through the site. We count the number of juvenile Chinook observed, with each snorkeler covering an equal portion of the stream during each pass. Snorkelers alternate sides of the stream after each pass to control for bias. We record Chinook size class and habitat unit for each fish observed.
We then attempt to capture at least 20 fish by dip net while snorkeling in order to measure how much they have grown between our four seasonal sampling periods, which are fry release (winter), May through June (spring), July through August (summer), and September through October (fall). Once measured and weighed, the fish are returned to the collection site.
A juvenile Chinook captured by dip net
PGE biologist snorkeling in Lake Creek for juvenile Chinook
June 23, 2016
In April this year, PGE and CTWS released the Lower Deschutes River Macroinvertebrate and Periphyton Study, which was prepared by R2 Resource Consultants. Since then, the Oregon Department of Environmental Quality has asked for further analysis of the data behind the report.
PGE and R2 consulted with DEQ and other stakeholders in designing the study and provided extensive access for questions and input as the analysis and report were prepared. However, in a review of the results, agency staff identified questions and concerns regarding the data collected and conclusions drawn that the agency wants PGE to address before they will accept the study as final.
PGE and R2 had also identified areas for further analysis, so we’re working on a plan to address these questions and concerns. We’ll submit our plan to DEQ by June 30, and post additional updates as they’re available.
June 21, 2016
So far this year, we’ve collected 30 adult spring Chinook salmon at the Pelton Adult Trap, below the Re-Regulating Dam. These fish started out as fry in the rivers and tributaries above Lake Billy Chinook, passed downstream through our Selective Water Withdrawal collection facility, and have now made their trip to the ocean and back.
We implanted these Chinook with an esophageal radio-tag and transported and released them above Round Butte Dam to continue their upstream migration. Now we’re tracking their movements to determine which river (Crooked, Deschutes or Metolius) and which tributary they ascend, and if possible where they spawn. We even jump into the water to put a visual on a radio-tagged fish from time to time. We expect Chinook salmon to continue arriving through July.
Tagged fish are considered wild fish. So if you catch one, please release it back into the water.
Green floy tag in the spring Chinook is used as a second identification tool
PGE biologist checking on tagged fish in Whychus Creek
Implanting an esophageal radio tag in a steelhead