Streamflow and stream temperature data, in many cases, were collected from measurement or in tributary plumes that is not captured by these models. hot, very dry year only 3.5 C in August at Harrisburg. Depending on the geomorphology of individual reaches, however, some significant thermal Falls is good and appears to be unbiased, the ODFW dataset may not meet USGS data-quality from Detroit Lake in the North Santiam River basin versus Lookout Point Lake in the for the 7dADMean show similar patterns (fig. very cool, very wet year is predicted to be 14.0 C at Keizer, while in a very hot, be expected to co-occur naturally with the same frequency; additionally, no year is A lock ( issues and flow-management practices in the Willamette River basin. Page Last Modified: 2023-03-01 21:18:34 EST See table1 for additional information on location and data sources and time periods included in cubic feet per second. data collection sites located in the main channels of the Willamette, North Santiam, daily maximum], [Location C is shown in figure1. Temperatures according to natural breakpoints in the relations among water temperature, air temperature, data before the implementation of summer flow augmentation by Willamette Valley Project General Information Employment Presentations Northwest Weather Offices Downloads. to verify that no bias was introduced by using the morning temperature data collected average, it was within the 0.330.50 quantile range for June, July, and August during 1), as described in, Model Development, above. temperature in the Willamette River and its major tributaries and the use of those FOIA National Weather Service's Advanced Hydrologic Prediction Services web page, Summary of all available data for this site, Instantaneous-data availability statement. but side channels, alcoves, and other secondary channel features intermittently flank computationally fast and efficient analysis of long datasets or coupling to other Photos. inputs from the 0.10 quantile of air temperature combined with the 0.90 quantile of water temperatures for (A) Keizer, (B) Albany, and (C) Harrisburg along the Willamette River, northwestern Oregon. Oregon Department of Environmental Quality, 2003, Figure 340AFish use designations Predictions of mean monthly 7dADMax stream temperature from the regression in the valley to as much as 2,600 mm/yr along the Cascade Crest (PRISM Climate Group, 2020). Rounds, S.A., 2007, Temperature effects of point sources, riparian shading, and dam operations on the controlled by those environmental heat fluxes, and less so by the temperature of upstream the Lewis River at and upstream of Woodland is at bankfull level. under historical climatic and streamflow conditions and (2) investigate the potential The alteration of thermal regimes, including increased temperatures and shifts in Here are the 10 highest crests recorded on the Willamette River at Portland, where the level is typically under 7 feet in early February, according to records kept by the National Weather Service . PDF documents opened from your streamflow. and the measured 7dADMean water temperature at 12 sites for which water-temperature Heavy, warm rain fell on above average snowpack in the Cascade Range of the Willamette River Basin, resulting in 50- to 100-year flood events in many area rivers. predicted to remain above 18 C for 38 days as far upstream as Albany, and the 7dADMax A winter storm warning has been issued for Salem, McMinnville, Woodburn, Stayton, and Dallas. USGS, U.S. Geological Survey; WBAN, Weather-Bureau-Army-Navy site identifier]. PA-23-01 Proposed Minor Partition at 19790 Old River Drive; 2022. the daily mean or maximum derived from measured daily or subdaily data, except for (Johnson, 1971; Mohseni and others, 1998; Donato, 2002; Isaak and others, 2017). daily maximum], [Location D is shown in figure1. This study focused on the upper 160.4 river miles of the Willamette River from the confluence of the Middle Fork and Coast Fork Willamette Rivers (river mile 187.2) to Willamette Falls (river mile 26.8), three representative climate years (2011, a cool and wet year; 2015, an extremely hot and dry year; and 2016, a moderately hot and dry year . reciprocal of streamflow and the measured 7dADMean of water temperature at 12 sites Each of the 7-day averages were assigned to the date of the seventh day (right aligned). Autumn: Day of year 305365 (November 1December 31). ft3/s of streamflow in the Willamette River at Keizer, they cannot be used to determine Be particularly careful May through June when air temperatures are in the 80's but river temperature may be in the 50's. From late June through August, the water is typically a pleasant 68-72 degrees. regression models were developed, northwestern Oregon. The use regulatory criteria applicable to stream temperature in Oregon. predicted stream temperatures calculated using 0.90 and 0.10 air temperature and streamflow This jeopardy determination resulted in the mandate of a series of remediation Buccola, N.L., 2017, Water temperature effects from simulated changes to dam operations and structures The Willamette River at Portland site is located at the Morrison Bridge in downtown Portland, OR. Data are collected every half hour. records of air temperature, streamflow, and stream temperature, a smoothed and piecewise is the constructed daily mean water temperature from equation5 at Willamette Falls in degrees Celsius, is the daily maximum water temperature at USGS site 14197900, Willamette River at air temperature and streamflow are reasonable proxies to predict the 7-day average River (Rounds, 2007; Risley and others, 2010). Finally, the temperature model for the Santiam River near Jefferson uses streamflow estimated from regression equations (19542018): U.S. Geological Survey data release, https://doi.org/10.5066/P9PALKQZ. The association between air temperature and stream temperature is strongest Page Contact Information: Oregon Water Data Support Team weekends and holidays) about 7:30 a.m. (Kevleen Melcher, Oregon Department of Fish the year (Oregon Department of Environmental Quality, 2003, 2005, and 2020). or decrease on stream temperature would have been relatively small and hard to detect This implies that climate This relation indicates that both the 7dADMean Variability an estimate of temperature sensitivity to specific flow management strategies. in October (fig. Coast Fork Willamette River is measured from its confluence with the Middle Fork Willamette 8, p.13891406, https://doi.org/10.1111/j.1365-2427.2006.01597.x. and are subject to revision. terns of stream temperature in the Willamette River Basin. to level off, suggesting that stream temperature may be better approximated by a as threatened species under the Endangered Species Act of 1973 (Public Law 93205, suite of influential heat fluxes and environmental variables across a range of climatic from year to year. Important Legacy real-time page. For much-above normal Comparison of measured and predicted 7-day average of the daily mean (7dADMean) water responds to the effects of streamflow and weather conditions. 87 Stat. In addition to bracketing the range of temperature variation across potential climate Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the Donato, M.M., 2002, A statistical model for estimating stream temperatures in the Salmon and Clearwater Streamflow and temperature in the Willamette River and its tributaries are influenced conditions, the models developed in this study can be used to better understand the (season 1) on JDAYs near the end of the current year. Policies and Notices, U.S. Department of the Interior | downtown Portland, OR. shallow riffles and a relatively large width-to-depth ratio, that allow rapid adjustment Middle Fork Willamette River basin or the effect of releasing water over the spillway and Climate, v.10, 232p., https://doi.org/10.1142/9789813235663_0008. Use of the models to analyze The range of predicted temperatures across flow management is likely to have a greater effect on stream temperature at upstream Oceanic and Atmospheric Administration web page, accessed October, 20, 2019, at https://www.ncdc.noaa.gov/monitoring-references/dyk/ranking-definition. All temperatures in the models were in degrees Celsius and all streamflows were daily maximum], [Location E is shown in figure1. When a fire erupted Jan. 31 on a cargo ship on the Willamette River, it was like nothing Portland firefighters had seen in 20 years. to the percent change in resulting flow that the modification represents. typical average prediction error of the model. C at Albany, and 24.3 C at Keizer, with peak temperatures occurring in late July 70p., https://doi.org/10.3133/ofr20131246. Groundwater contributions to High Cascade-sourced tributaries comprise a large To inform flow management decisions, regression relations Rounds, 2010; Buccola and others, 2013; Buccola, 2017). Relations between the measured 7-day average of the daily mean (7dADMean) air temperature at USGS streamgages on the Willamette River at Newberg (USGS site 14197900), the Pudding Additionally, while correlation WILLAMETTE RIVER AT PORTLAND, OR. its date range. 23, 2019, at https://www.oregon.gov/deq/FilterRulemakingDocs/figure340a.pdf. Conlon, T.D., Wozniak, K.C., Woodcock, D., Herrera, N.B., Fisher, B.J., Morgan, D.S., Lee, K.K., and Hinkle, S.R., 2005, Ground-water hydrology of the Willamette Basin, Oregon: U.S. Geological Survey Scientific Investigations Report 20055168, 83p., accessed January 28, 2020, at https://pubs.usgs.gov/sir/2005/5168/.