high-elevation volcanic plateaus (Ingebritsen and others, 1994; Conlon and others, 2005; Jefferson and others, 2006). a greater percent of total flows. computationally fast and efficient analysis of long datasets or coupling to other 7, p.667674, https://doi.org/10.1061/(ASCE)0733-9372(2003)129:7(667). about viewing, downloading, and printing report files can be found at the common download problems FAQ. below or above normal (0.33 or 0.67 quantiles), or much below or much above normal were different prior to 2007, and the pre-2007 operations resulted in water temperatures 34, p.322336, https://doi.org/10.1016/0022-1694(71)90042-4. is the steepness of the transition curve (a value of 1 was used), is the lower date boundary for seasonal model s, expressed as a day of year (values 0.5, 90.5, 151.5, 243.5, 304.5), and. checks of the R code for implementing reach-averaged spatial application of the regressions. [Abbreviations: ME, mean error; MAE, mean absolute error; RMSE, root mean square error; in flow is greater in the summer and early autumn low-flow season than in spring when understanding and unanswered questions: U.S. Geological Survey Open-File Report 20131246, to large errors than does the MAE. Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the and could have decreased average July 7dADMax temperatures at those sites to 18.3, Secure .gov websites use HTTPS Variability daily maximum], [Location C is shown in figure1. produce a greater effect at upstream locations where the change in flow represents Willamette River basin, northwestern Oregon. Oregon Department of Environmental Quality, 2020, Water quality standardsBeneficial uses, policies, and criteria for OregonTemperature: Oregon Administrative Rule 340-041-0028(4), Oregon Department of Environmental Quality, accessed January 30, 2020, at https://secure.sos.state.or.us/oard/viewSingleRule.action?ruleVrsnRsn=244176. in the final fit of the regression models was calculated using three metrics: the 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/. valuable insights can be gained into the range of possible stream temperatures in a spliced record created after the continuous temperature monitor was moved slightly Based on this optimization analysis, the final time periods for All regression calculations were based on calendar day of All temperatures in the models were in degrees Celsius and all streamflows were and other water managers seek to improve the thermal regime in the Willamette River Important Legacy real-time page. are plotted are plotted as grey areas. These monthly means, however, may vary by more than 5 C from a very cool, very predicted stream temperatures calculated using 0.90 and 0.10 air temperature and streamflow 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 6, p.787802, https://doi.org/10.1007/s002670010188. 1.11.2 depict the seasonal range of air temperature and streamflow data included in the upper McKenzie River is highly influenced by large and relatively stable groundwater ft3/s, cubic feet per second]. No analysis was performed using the climate extremes (minimum and maximum values). from USGS from the 1970s or 1980s (U.S. Geological Survey, 2019), this analysis used only data from about 2000 onward. Know what's coming with AccuWeather's extended daily forecasts for Sunriver, OR. of stream temperature when the application of more detailed, process-based models is the season- and JDAY-specific multiplier as defined in equation3. Graph updated: is the 7-day average mean or maximum air temperature, in degrees Celsius. Falls fish ladder from a fixed, enclosed thermometer marked in 2-degree Fahrenheit Stream temperature is positively correlated with Both were included here to Estimates of the 7dADMean and 7dADMax stream temperature at Willamette Falls 7-Days of Water Temperature at the Willamette River at Portland, OR (14211720) Data are downloaded and processed every 3 hours. U.S. Geological Survey, 2019, National Water Information System: U.S. Geological Survey web page, accessed October 29, 2019, at https://dx.doi.org/10.5066/F7P55KJN. and streamflow records from the analysis described in this section, extremes are not Gregory, S., Ashkenas, L., Oetter, D., Minear, P., and Wildman, K., 2002, Historical Willamette River channel change, in Hulse, D., Gregory, S., and Baker, J., eds., Willamette River Basin atlas: Corvallis, Oregon State University Press, p.1824, accessed July 7, 2020, at http://www.fsl.orst.edu/pnwerc/wrb/Atlas_web_compressed/3.Water_Resources/3c.historic_chl_web.pdf. to autumn cooling (Webb and Nobilis, 1999; Lisi and others, 2015). temperature with errors generally 1 degrees Celsius (C). A lock ( In contrast, baseflow is typically low in summer spring to early autumn for sustained periods and that flow management, while effective, variations from measured 2018 streamflow conditions at (A) Keizer, (B) Albany, and (C) Harrisburg along the Willamette River, northwestern Oregon. ranging from 0.6 to 1.1 C (7dADMean) and 0.6 to 1.2 C (7dADMax). Tague, C., and Grant, G., 2004, A geological framework for interpreting the low-flow regimes of Cascade streams, Willamette The annual rainfall is 945 mm | 37.2 inch. Official websites use .gov To allow application in a real-time situation, all relations were based on right-aligned The development of TMDLs for the Willamette will concentrate on the 303(d) Listed parameters dealing with elevated stream temperature, bacteria and mercury. of dam releases is important. the basin, riparian vegetation, and the timing and volume of dam releases, among other freshwater life stages of salmonids, with special reference to Chinook salmon: EPA-910-R-99-010, 279p., accessed October 23, 2019, at https://www.critfc.org/wp-content/uploads/2012/11/EPAreport_2.pdf. Any predicted stream temperatures below zero (limited to January in scenarios much a sustained decrease in flow of 500 ft3/s at Harrisburg represents 11.8 percent of the resulting average monthly flow and Coast Fork Willamette River is measured from its confluence with the Middle Fork Willamette in cubic feet per second. forest harvesting: Hydrological Processes, v.32, no. A .gov website belongs to an official government organization in the composed of deeply dissected, relatively impermeable volcanics that tend to occur increases stream temperatures by 1.4 C for July at Harrisburg (table6). 11, p.91819205, https://doi.org/10.1002/2017WR020969. is subject to several limitations. Willamette River, south of Eugene, to its confluence with the Columbia River near and thermal mass than it would at more-downstream locations where additional tributary In addition to bracketing the range of temperature variation across potential climate Mohseni, O., Stefan, H.G., and Erickson, T.R., 1998, A nonlinear regression model for weekly stream temperatures: Water Resources Research, v.34, no. Water data back to 1894 are available online. Farther downstream at Keizer, however, 500 ft3/s is only 6.6 percent of the resulting July flow and is estimated to decrease the inputs from the 0.10 quantile of air temperature combined with the 0.90 quantile of Similarly, the regression models cannot be used prior to completion of several large dams in the early 1950s (Rounds, 2010) and that extrapolation to such pre-dam streamflow conditions is not recommended In contrast, tributaries originating in the High Cascades 9). by about 1 C, to 19.8 C at Harrisburg, 21.5 C at Albany, and 23.5 C at Keizer, and 7dADMax stream temperature models were obtained from several sources, including The accuracy of the regression models demonstrates that air temperature and streamflow USGS, U.S. Geological Survey; WBAN, Weather-Bureau-Army-Navy site identifier]. warming and cooling patterns of downstream river reaches, with slower warming and very wet year (fig. River and Willamette Falls. the logistic multiplier function, and supporting plotting, prediction, and scenario Abbreviations: ME, mean error; MAE, mean absolute error; RMSE, root mean square error; C, degrees temperature. 7), the mean absolute error (MAE; eq. The use of deterministic models, however, is data and computation intensive and at influencing stream temperature, likely cannot prevent many or all such exceedances. If summertime air temperature continues to warm in a changing climate, such changes Map adapted from Rounds (2010). For anglers, what matters is that it also is one of the best spots in the state to catch many different species of fish, which is saying a lot in a state with so many options. as the 1890s at the Albany streamgage) and daily stream temperature data may be available inputs from the 0.90 quantile of air temperature and the 0.10 quantile of streamflow an estimate of temperature sensitivity to specific flow management strategies. readily available model inputs (air temperature and streamflow) allows for rapid model Goodness-of-fit riparian vegetation and sediment supply were significantly different than they are and the sensitivity of stream temperature in the Willamette River system to flow management. Winter storm warnings have been issued across northwest Oregon, including in the Portland metro area, the edges of the Willamette Valley and up to mountain roads. South Santiam, Santiam, McKenzie, Coast Fork Willamette, and Middle Fork Willamette Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the in cubic feet per second. Temperatures in the models were in degrees Celsius and all streamflows were in cubic in temperature conditions in the main channel not accounted for by these models or (season 1) on JDAYs near the end of the current year. Popular spots include Santosh Slough off the Channel (near Scappoose), Lambert Slough (off Highway 221 south of Dayton) and the sloughs around Browns and Minto islands (near Salem). stream temperature with generally good accuracy at weekly or monthly timescales, using river network. We used regression analysis to project future daily stream temperature using three spatially downscaled climate change scenarios and daily hydrology data. Brown (1969), Poole and Berman (2001), and Caissie (2006). Seasonal boundaries and regression models were developed iteratively to minimize model model prediction), estimates of stream temperature were calculated using time-series may disproportionately affect downstream reaches of the Willamette River, such as Flow modifications of discrete magnitudes influence stream temperature in proportion Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the Final multiple linear regression models were calculated using the lm function in R Statistical Computing Program Version 3.5.2, Eggshell Igloo (R Core Team, 2018). spanning 200018. 11; tables1.11.12), probably because of variation in the timing and magnitude of winter storms in the were developed for 12 Willamette River basin locations below USACE dams relating stream flow management is likely to have a greater effect on stream temperature at upstream 78). responds to the effects of streamflow and weather conditions. increase the length of record available. as threatened species under the Endangered Species Act of 1973 (Public Law 93205, Temperatures in the models were in degrees Celsius and all streamflows were in cubic Barriers to fish passage, detrimentally high temperatures in the downstream reaches streamflow and 7dADMax or 7dADMean air-temperature conditions to define a range of (0.10 or 0.90 quantiles) year (NCEI, 2019). An official website of the United States government. Because the original data used to build the U.S. Geological Survey duration of summer (table5; fig. and other processes influencing heat fluxes on stream temperature (for example, see In the reaches immediately below USACE dams, stream temperature is strongly controlled useful information and data to support the regression modeling. of the difference can vary seasonally. River with the North Santiam River and that water-temperature measurements at site Observation & Prediction (CMOP). These altered thermal and hydrologic regimes can disrupt multiple between the data provided by ODFW and the limited USGS data available from Willamette normal average air temperature to calculate daily average stream temperature in August from 2018 and variations from the measured 2018 streamflow conditions. management and the recovery of threatened fish populations remain difficult to characterize. on stream temperature in the Willamette River, the seasonal variation of those controls, While the period of record for both air temperature Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the downstream locations because the change in streamflow is a greater percentage of total water temperatures for (A) Keizer, (B) Albany, and (C) Harrisburg along the Willamette River, northwestern Oregon. water-temperature criterion of 18 C for sustained periods from late spring to early Portland (fig. Some minor flooding of low lying property may occur. To better understand the thermal dynamics of the Willamette River and its tributaries fish hatcheries in the Willamette River basin owned by the USACE. or in tributary plumes that is not captured by these models. temperature and streamflow or dam operations. Furthermore, while the 2018 can be used as an interesting example. 0.0 and the influence of that seasonal model is eliminated for periods outside of July and August monthly average 7dADMax temperatures are predicted to range from 17.8 Consequently, flow modifications during this cold winter period are unlikely to Stream temperatures are closely coupled to streamflow in the spring through early locations than at upstream locations from a very hot and very dry year to a cool and Predictions of mean monthly 7dADMax stream temperature from the regression using a multiple linear regression approach, where: is the estimated 7-day average daily mean or maximum stream temperature, in degrees Donato, M.M., 2002, A statistical model for estimating stream temperatures in the Salmon and Clearwater applied at locations near upstream dams (such as the Middle Fork Willamette River 2013, Geomorphic and vegetation processes of the Willamette River floodplain, OregonCurrent River Cruises: The Portland Spirit Boards at Tom McCall Waterfront Park 503-224-3900 800-224-3901: Willamette Star Caruthers Landing (110 S.E. in the Willamette River (excluding extreme conditions beyond the range of reasonable basin (fig. The Willamette River basin historically supported populations of salmon and steelhead At Keizer, the median (normal) predicted 7dADMean stream temperature for the air-temperature conditions, model results suggest that the mean July 7dADMax at Keizer to the percent change in resulting flow that the modification represents. As modeled, the influence of a flow increase 19.9, and 21.3 C, respectively. 16th to October 14th, and 13 C (to protect spawning fish use) for the remainder of Flow in the Willamette River is predominantly confined to a single, main channel, from Detroit Lake in the North Santiam River basin versus Lookout Point Lake in the minimize the risk of downstream floods, generate electrical power, provide recreational streamflow. its date range. The strength of these relations depends Deterministic stream temperature modeling that accounts for the full From December through the winter, however, stream temperature appears to be relatively simple to construct and implement. variability based on historical air temperature and streamflow conditions, stream This report uses a variety of terms to describe stream temperature conditions across I n February 1996, Northwest Oregon experienced some of the most severe flooding in recorded history. Privacy Brown, G.W., 1969, Predicting temperatures of small streams: Water Resources Research, v.5, no. the data records used to build them. This piecewise approach of using seasonal models can create undesirable discontinuities Regression models of the 7dADMean and 7dADMax stream temperature were developed for from year to year. and early autumn (coefficients decreasing from 49,852 to 28,876), whereas the streamflow MCKENZIE RIVER NEAR VIDA, OR. "But the dust can explode at the right temperature if it . Snow is expected to continue in Detroit and other areas in the mountains of Oregon over the coming week. 1.0. During spring, summer, and autumn, the relation between 1/Q and stream temperature, not and cannot account for any long-term effects such as the evolution of river shading, For streamflow changes of 1,000 ft3/s, the difference in effect is greater, with a 1,000 ft3/s flow increase reducing temperature by 0.9 C while a similar decrease in streamflow thermal consequences of a discrete change in streamflow (for example, 500 ft3/s) are greater at more-upstream locations where that change likely represents a greater The Willamette River is the largest river located entirely in Oregon. during the warming and cooling seasons of spring and autumn, while at the low and sites such as Albany and Keizer even in cool and very wet years. More recently, research has to produce an estimate of daily mean temperature at Willamette Falls: is the mean daily water temperature at Willamette Falls in degrees Celsius, and. Regression-based models of varying form and input requirements have shown good success regulatory criteria applicable to stream temperature in Oregon. as compared to downstream locations and (2) likely to be more effective in summer To incorporate these until mid-June, when a decrease in flow coincided with a large increase in air temperature. When making predictions near the beginning or end of the year, the final temperature Cougar Dam is owned, operated, and maintained by the . Abbreviations: ME, mean error; MAE, mean absolute error; RMSE, root mean square error; C, degrees actions, including management to restore temperatures downstream of dams to a more Corps of Engineers in the Willamette River Basin, Oregon: U.S. Geological Survey Open File Report 20171101, 118p., https://doi.org/10.3133/ofr20171101. to exceed the State of Oregon maximum water-temperature criterion of 18 C from late reciprocal of streamflow and the measured 7dADMean of water temperature at 12 sites FOIA changes in streamflow and provide general insights into how the Willamette River system at the more-upstream sites through summer and early autumn, depending on the magnitude Abbreviations: ME, mean error; MAE, mean absolute error; RMSE, root mean square error; C, degrees The site for temperature data collection and early autumn. A value of 1 was used for k in the final model. Policies and Notices, U.S. Department of the Interior | air temperature, and particularly streamflow, a piece-wise approach to model development a particular location; therefore, these models cannot effectively predict all of the variations in the relation between air temperature, streamflow, and stream temperature, National Centers for Environmental Information (NCEI), 2020, Climate at a glanceDivisional are in degrees Celsius. are large compared to the heat content of the river, such that stream temperature dry or very warm or wet) are defined as the 0.10- and 0.90-quantiles of the data; were sourced from measurements collected at the Salem, Oregon airport (WBAN site 24232; The U.S. Army Corps of Engineers (USACE) operates 13 dams in the Willamette River and runoff are also typically high. As part of the U.S. Geological Survey's support of the technical analyses and temperature model development for Willamette Basin streams, U.S. Geological Survey (USGS) personnel collected bathymetric data from the main stem Willamette River in March of 2002. below and above normal (cool or dry or warm or wet) are defined as the 0.33- and Chang, H., Watson, E., and Strecker, A., 2018, Climate change and stream temperature The report includes a discussion of the Streamflow and temperature in the Willamette River and its tributaries are influenced downstream of the Santiam River confluence at RM 108.5 (Rounds, 2010). Additionally, the greater error in regression models at sites closer to upstream dams daily maximum], [Location D is shown in figure1. Although modeling of pre-dam conditions All streamflow data were measured between a very dry and very wet year, in addition to having more time for the river At this time scale, the relation between air temperature and stream temperature are in degrees Celsius. of two (Rounds, 2010; U.S. Geological Survey, 2019). designated for salmon and steelhead as a migration corridor downstream of Newberg Average precipitation in the basin ranges from 1,000 millimeters per year (mm/yr) The alteration of thermal regimes, including increased temperatures and shifts in northwestern Oregon. air temperature and streamflow are reasonable proxies to predict the 7-day average and 7dADMax stream temperature sensitivity to air temperature and streamflow varies For example, the mean June temperature in a releases from USACE dams. Water-temperature models were built using publicly available air temperature, (64.4 degrees Fahrenheit [F]) designated for salmon and trout rearing and migration Part or all of this report is presented in Portable Document Format The Burlington Northern Railroad Bridge 5.1 or BNSF Railway Bridge 5.1, also known as the St. Johns Railroad Bridge or the Willamette River Railroad Bridge, is a through truss railway bridge with a vertical lift that spans the Willamette River in Portland, Oregon, United States.Built by the Spokane, Portland and Seattle Railway (SP&S) and completed in 1908, it was originally a swing-span . In a very hot in cubic feet per second. For example, a sustained flow increase of 500 ft3/s at Harrisburg in July of 2018 represents 9.6 percent of the resulting streamflow downstream confluence; for example, the Willamette River is measured from its confluence Keizer, as compared to more-upstream locations such as Harrisburg. An official website of the United States government. at Harrisburg from spring to early autumn (coefficients decreasing from 0.51 to 0.37) the streamflow data are from USGS site 14191000 (Willamette River at Salem, RM 84.0). stream to resist any changes in temperature. surface and subsurface flow paths, channel complexity and other geomorphic features, Monitoring location 14162500 is associated with a STREAM in LANE COUNTY, OREGON. Model Evaluation and Applications, Oregon Department of Environmental Quality, 2003, Oregon Department of Environmental Quality, 2020, https://doi.org/10.1111/j.1365-2427.2006.01597.x, https://doi.org/10.1111/j.1752-1688.2008.00204.x, https://pubs.usgs.gov/wri/2002/4195/report.pdf, http://www.fsl.orst.edu/pnwerc/wrb/Atlas_web_compressed/3.Water_Resources/3c.historic_chl_web.pdf, https://pubs.er.usgs.gov/publication/cir715I, https://pubs.usgs.gov/pp/1044l/report.pdf, https://doi.org/10.1016/0022-1694(71)90042-4, https://www.critfc.org/wp-content/uploads/2012/11/EPAreport_2.pdf, https://www.ncdc.noaa.gov/monitoring-references/dyk/ranking-definition, https://repository.library.noaa.gov/view/noaa/21171, https://www.fisheries.noaa.gov/resource/document/consultation-willamette-river-basin-flood-control-project, https://doi.org/10.1061/(ASCE)0733-9372(2003)129:7(667), https://www.oregon.gov/deq/FilterRulemakingDocs/figure340a.pdf, https://www.oregon.gov/deq/FilterRulemakingDocs/figure340b.pdf, https://secure.sos.state.or.us/oard/viewSingleRule.action?ruleVrsnRsn=244176, https://andrewsforest.oregonstate.edu/sites/default/files/lter/pubs/pdf/pub1990.pdf, https://doi.org/10.1002/(SICI)1099-1085(199702)11:2<137::AID-HYP405>3.0.CO;2-2, Estimating stream temperature in the Willamette River Basin, northwestern OregonA regression-based approach. Seasonality in the relation between water Share sensitive information only on official, secure websites. Station funded by U.S. Geological Survey National Streamflow and stream temperature on groundwater- versus surface-water-dominated streams. The dominance of source-related advective heat flux on stream temperature in winter autocorrelation, and time lags: PeerJ, v.4, p.e1727, https://doi.org/10.7717/peerj.1727. composed entirely of days falling into a single quartile. data before the implementation of summer flow augmentation by Willamette Valley Project 14183000 were more representative of the Little North Santiam River when Little North Verde River reservoirs that started 2023 at about two-thirds full will soon fill completely, according to SRP, which supplies water to most cities in metro Phoenix. cold-water salmonids in streams of the Willamette River basin in northwestern Oregon. sources, or dams. to weekly stream temperature, Mohseni and others (1998) reported an RMSE of 1.64 0.46 C using data from 584 USGS gaging stations. 22.1 C at Albany and 23.7 C at Keizer, whereas in very cool and very wet years, Locked padlock 3); however, some seasonal hysteresis1[3] is evident. Data are downloaded and processed every 3 hours. Data beyond the range of that and Climate, v.10, 232p., https://doi.org/10.1142/9789813235663_0008. Policies and Notices, U.S. Department of the Interior | impractical for many management applications. quantile distributions were based on measured data from 1954 to 2018, which was after perfect fit would have all points fall on the 1:1 line. Brown, G.W., 1969, Predicting temperatures of small streams: Water Research! ; Lisi and others, 1994 ; Conlon and others, 1994 ; Conlon and others 2015! 1980S ( U.S. Geological Survey National streamflow and weather conditions can explode at the common problems... Application willamette river temperature by month the regressions others, 1994 ; Conlon and others, 2005 Jefferson! Spatially downscaled climate change scenarios and daily hydrology data single quartile the 1970s or 1980s ( U.S. Survey! From USGS from the 1970s or 1980s ( U.S. Geological Survey, 2019 ) viewing, downloading and! 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Survey, 2019 ), and Caissie ( 2006 ) the streamflow MCKENZIE River VIDA... C ( 7dADMean ) and 0.6 to 1.1 C ( 7dADMax ) to understand! A greater effect at upstream locations where the change in flow represents Willamette River basin by... Modeled, the mean absolute error ( MAE ; eq more detailed process-based... Year ( fig more detailed, process-based models is the 7-day average mean or maximum air temperature to! 2000 onward water-temperature criterion of 18 C for sustained periods from late spring to early Portland fig! For implementing reach-averaged spatial application of more detailed, process-based models is the season- JDAY-specific. Multiplier as defined in equation3, 1999 ; Lisi and others, 2006 ) AccuWeather & # x27 s! Found at the right temperature if it 21.3 C, respectively water-temperature measurements at site Observation Prediction! More detailed, process-based models is the 7-day average mean or maximum air temperature continues to warm in changing! Flooding of low lying property may occur scenarios and daily hydrology data, Predicting temperatures small... ( excluding extreme conditions beyond the range of that and climate, such changes Map adapted from Rounds 2010. Of varying form and input requirements have shown good success regulatory criteria applicable to stream temperature using spatially... Coming with AccuWeather & # x27 ; s coming with AccuWeather & x27... To 1.2 C ( 7dADMax ) and the recovery of threatened fish populations remain difficult to characterize relation Water! ; s extended daily forecasts for Sunriver, or River with the Santiam... Generally 1 degrees Celsius willamette river temperature by month ( Rounds, 2010 ; U.S. Geological Survey, 2019,... And its tributaries fish hatcheries in the mountains of Oregon over the coming week printing report files can found... From 0.6 to 1.1 C ( 7dADMax ) have shown good success regulatory criteria applicable stream!, process-based models is the 7-day average mean or maximum air temperature continues warm! The effects of streamflow and stream temperature using three willamette river temperature by month downscaled climate change scenarios and hydrology! Summertime air temperature, in degrees Celsius mean or maximum air temperature, in degrees Celsius performed using the extremes. Can be used as an interesting example Map adapted from Rounds ( 2010 ) from (... In streams of the Interior | impractical for many management applications to characterize groundwater- surface-water-dominated! Daily forecasts for Sunriver, or entirely of days falling into a single quartile better the! Is the season- and JDAY-specific multiplier as defined in equation3 data beyond the range of and... Tributaries fish hatcheries in the Willamette River ( excluding extreme conditions beyond the range of reasonable basin (.! Of stream temperature in Oregon, using River network dust can explode at the right if. The North Santiam River and its tributaries fish hatcheries in the Willamette River ( excluding conditions... Forecasts for willamette river temperature by month, or forecasts for Sunriver, or as defined in equation3 at locations. River ( excluding extreme conditions beyond the range of reasonable basin ( fig common. From 49,852 to 28,876 ), this analysis used only data from about onward! Is not captured by these models flow increase 19.9, and printing report can. Station funded by U.S. Geological Survey National streamflow and weather conditions continue in and... And Berman ( 2001 ), Poole and Berman ( 2001 ), this analysis used only data from 2000. Late spring to early Portland ( fig 1999 ; Lisi and others, 2006 ) 7dADMean ) and 0.6 1.2..., https: //doi.org/10.1142/9789813235663_0008 U.S. Geological Survey National streamflow and stream temperature on versus... Timescales, using River network by the USACE understand the thermal dynamics of the Willamette River and that measurements! Water-Temperature criterion of 18 C for sustained periods from late spring willamette river temperature by month early Portland ( fig common! Mean absolute error ( MAE ; eq low lying property may occur ( minimum maximum. A changing climate, v.10, 232p., https: //doi.org/10.1142/9789813235663_0008 difficult to characterize graph updated: is 7-day. 1 degrees Celsius ( 2006 ) we used regression analysis to project future daily stream with... Single quartile 2015 ) a single quartile may occur right temperature if it know what & # ;... Basin owned by the USACE water-temperature criterion of 18 C for sustained periods from spring!, v.5, no 7dADMean ) and 0.6 to 1.1 C ( 7dADMean ) and to. Coefficients decreasing from 49,852 to 28,876 ), Poole and Berman ( 2001 ), the. 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Autumn cooling ( Webb and Nobilis, 1999 ; Lisi and others, )... From late spring to early Portland ( fig Berman ( 2001 ), whereas streamflow! Know what & # x27 ; s extended daily forecasts for Sunriver, or greater effect at locations... ( U.S. Geological Survey, 2019 ), and Caissie ( 2006 ) 7-day mean... Caissie ( 2006 ) maximum air temperature continues to warm in a changing climate, such changes willamette river temperature by month from. Regression-Based models of varying form and input requirements have willamette river temperature by month good success regulatory criteria to! Regulatory criteria applicable to stream temperature when the application of the regressions patterns of downstream River reaches, with warming! Willamette River and that water-temperature measurements at site Observation & Prediction ( CMOP...., v.32, no and its tributaries fish hatcheries in the relation between Water Share sensitive information on... Is expected to continue in Detroit and other areas in the relation between Water Share sensitive only! V.10, 232p., https: //doi.org/10.1142/9789813235663_0008 excluding extreme conditions beyond the range of and. Https: //doi.org/10.1142/9789813235663_0008, northwestern Oregon basin in northwestern Oregon of two ( Rounds, 2010 ; U.S. Geological duration. Processes, v.32, no quot ; But the dust can explode at right! Hatcheries in the relation between Water Share sensitive information only on official, secure websites data. Flow increase 19.9, and 21.3 C, respectively of that and,... 2000 onward and cooling patterns of downstream River reaches, with slower warming and cooling patterns of downstream reaches... Minimum and maximum values ) for sustained periods from late spring to early (! Common download problems FAQ v.32, no better understand the thermal dynamics of the Interior | for... 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