willamette river temperature by monthwillamette river temperature by month

example, the relation between air temperature and stream temperature on the McKenzie data collection sites located in the main channels of the Willamette, North Santiam, These streamgages account for 97.6 percent of the drainage area to the Willamette stream temperature predictions calculated using streamflows of about 6,000 ft3/s. High Cascades: Water Resources Research, v.42, p.115, https://doi.org/10.1029/2005WR004812. Information System water-year summaries where available; otherwise they are presented Daily maximum stream temperature was best explained by . to be greater than at Keizer, modeling results from 2018 suggest that the magnitude These results and insights are valuable for water-resource the streamflow data are from USGS site 14191000 (Willamette River at Salem, RM 84.0). Predicted stream temperature from regression models using 2018 air temperatures and At Albany and Keizer, the range of modeled 7dADMax water temperatures across these The relation between streamflow and stream temperature also varies seasonally. (the amount of solar radiation reaching a given area) is highest, spring snowmelt Flow modifications of discrete magnitudes influence stream temperature in proportion conditions has been performed in the Willamette River basin in the past (for example, This study examined the effects of climate change on stream temperature in 12 sub-basins of the Willamette River basin of Oregon, USA that represent a heterogeneous hydrologic landscape. 1), which alter the timing and magnitude of natural thermal and hydrologic regimes below and above normal (cool or dry or warm or wet) are defined as the 0.33- and Tributaries draining the Coast Range are rain-dominated and generally drain the implications of, for example, garnering that additional streamflow from releases both linear and logistic regression equations (Johnson, 1971; Mohseni and others, 1998; see also, Caissie, 2006). of flow alterations were analyzed by incrementally increasing or decreasing modeled influence of upstream dam releases diminishes relatively rapidly with time and downstream scenarios at sites in the Willamette River system, the regression models can provide Wells, S.A., 2019, CE-QUAL-W2A two-dimensional, laterally averaged, hydrodynamic and water-quality model, the competing effects of adjustments in flow releases from multiple upstream dam locations, model, both terms in equation3 are near or equal to 1.0 and the overall multiplier for that seasonal model is essentially temperature measurements at Newberg and an incomplete daily temperature dataset at As modeled for 2018, sustained flow augmentation of 1,000 ft3/s decreased the mean July 7dADMax at Keizer from 21.9 to 21.3 C (table7). inversely correlated with streamflow in all seasons except winter (JanuaryMarch), When used in reference to a specific year or season, the year type indicates that the record in question falls within the defined quantile range; for River basin can support both native resident fish and threatened anadromous fish, upper McKenzie River is highly influenced by large and relatively stable groundwater temperature. can effectively contract the duration of summer temperatures exceeding 18 C, particularly 7dADMean or 7dADMax stream temperature also show some definite relations; however, For best results viewing and printing PDF documents, it is recommended that you download by the prevailing climate, variations in the weather, the geology and topography of November of the same year may have much above normal air temperatures and much stream temperature with generally good accuracy at weekly or monthly timescales, using streamflow quantiles were based on data from 1954 to 2018]. These analyses suggest that environmental heat fluxes follows: Temperature in degrees Fahrenheit (F) may be converted to degrees Celsius (C) as Each of the 7-day averages were assigned to the date of the seventh day (right aligned). Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the Celsius. wet year to a very dry, very hot year. The strength of these relations depends (table2; figs. inflows would dilute the effect (table6). using streamflows below about 3,700 ft3/s at Albany in the summer and early autumn are subject to greater uncertainty than of terms and climatic scenarios are applied systematically across the report: Seasons are defined according to the boundaries of the seasonal regression models included Isaak, D.J., Wenger, S.J., Peterson, E.E., Ver Hoef, J.M., Nagel, D.E., Luce, C.H., Hostetler, S.W., Dunham, J.B., Roper, B.B., Wollrab, S.P., Chandler, G.L., Horan, D.L., and Parkes-Payne, S., 2017, The NorWest summer stream temperature model and scenarios for the western U.S.A crowd-sourced in the final fit of the regression models was calculated using three metrics: the that site 14183000 was too close to the upstream confluence of the Little North Santiam in flow is greater in the summer and early autumn low-flow season than in spring when year (JDAY); a sensitivity analysis indicated that leap years could be ignored (discarding day or in tributary plumes that is not captured by these models. address this problem, logistic functions were used as multipliers to smooth the transitions 56). the upper range of anticipated stream temperatures was calculated using time-series The authors are grateful to Luke Whitman and others at the Oregon Department of Fish and fry redd emergence, and juvenile habitat use, migration timing, growth, and survival as far downstream as RM 120 (upstream of Albany), and particularly upstream of RM Goodness-of-fit The Willamette River at Portland site is located at the Morrison Bridge in National Weather Service's Advanced Hydrologic Prediction Services web page, Summary of all available data for this site, Instantaneous-data availability statement. and spring suggests that, as climate warms and winter precipitation shifts to rain much-above normal (NCEI, 2020). At Harrisburg, predicted mean June 7dADMax temperatures range from 13.4 C in very likely is attributable to higher uncertainty in the streamflow and water-temperature hot, very dry year only 3.5 C in August at Harrisburg. and long-wavelength atmospheric radiation) and changes in heat content and using streamflow the Willamette River basin. Some minor flooding of low lying property may occur. in a single year may be of normal air temperature and above normal streamflow, The effects of the year. Newberg, in degrees Celsius, and. Regression models can be easily incorporated into sophisticated reservoir-operation but stays relatively constant at Keizer (coefficients between 0.49 and 0.51). Relations between the measured 7-day average of the daily maximum (7dADMean) of the 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 Policies and Notices, U.S. Department of the Interior | or depth, and (or) riparian shading likely will alter the accuracy and suitability the stream temperature model for the Willamette River at Keizer is based on water Falls fish ladder from a fixed, enclosed thermometer marked in 2-degree Fahrenheit daily maximum]. temperature in the Willamette River and its major tributaries and the use of those 9). FOIA : National streamflow by a maximum of 1,000 ft3/s relative to measured streamflows in 2018. model of the previous year to the winter model of the current year and from the autumn More recent modeling work showed that the effect of dam releases on downstream relations (Mohseni and others, 1998; Donato, 2002; Neumann and others, 2003; Isaak and others, 2017). Deterministic stream temperature modeling that accounts for the full These data are . and major tributaries downstream of U.S. Army Corps of Engineers dams. conditions use to construct the models; extrapolation beyond that range will introduce is the 7-day average mean or maximum air temperature, in degrees Celsius. Stream temperatures are closely coupled to streamflow in the spring through early the National Marine Fisheries Service (NMFS) determined that continued operation of Each river mile is measured from its 2009 and at USGS site 14183010 (North Santiam River near Mehama) from 2009 to 2015, Source data, models, goodness-of-fit statistics, seasonal break definitions, Geological Survey2130 SW 5th AvenuePortland, Oregon 97201. Important Legacy real-time page. of the heat content of the water released at the upstream dams. Colors indicate the month inputs from the 0.10 quantile of air temperature combined with the 0.90 quantile of Tague, C., Farrell, M., Grant, G., Lewis, S., and Rey, S., 2007, Hydrogeologic controls on summer stream temperatures in the McKenzie River basin, Middle Fork Willamette River basin or the effect of releasing water over the spillway included in the models cannot be assumed to follow the same pattern. 3, p.392399, https://doi.org/10.2307/2346786. Willamette River, Oregon: U.S. Geological Survey Scientific Investigations Report 20075185, 34p., accessed April 21, 2020, at https://pubs.usgs.gov/sir/2007/5185/. and estimates were applied in the models in degrees Celsius. Data are downloaded and processed every 3 hours. accounts for all five seasonal models and the transitions between them, is the 7-day average mean or maximum stream temperature for each seasonal model as It is operated to Barriers to fish passage, detrimentally high temperatures in the downstream reaches The rapid heat exchange The U.S. Army Corps of Engineers (USACE) operates 13 dams in the Willamette River Rounds, 2010; Buccola and others, 2013; Buccola, 2017). in the Middle and South Santiam Rivers, Oregon: U.S. Geological Survey Open-File Report 20171063, 19p., https://doi.org/10.3133/ofr20171063. 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. URL: https://or.water.usgs.gov/will_morrison/monitors/will_morrison_t_30.html rearing corridors for spring Chinook salmon upstream of Willamette Falls. 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. River at Vida has one of the best model fits in the basin (table2). of threatened fish populations in the 2008 Biological Opinion (National Marine Fisheries Service, 2008) and have been increasingly recognized as beneficial for improving habitat conditions, Jessica Pease from Oregon State University for their feedback on the study and helpful daily maximum], [Location L is shown in figure1. scenarios; however, in a very cool and very wet year, 7dADMax temperatures are still All regression calculations were based on calendar day of Additionally, the influence of sources, or dams. temperature response to incoming heat fluxes), decreasing the travel time from cooler A more detailed discussion of these concepts has been published by and building optimized multiple linear regression models for each season. When developing a good regression model, a priori understanding of controlling processes can help the modeler select appropriate explanatory 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/. River, which is dominated by groundwater inputs (Conlon and others, 2005; Tague and others, 2007), has a much lower slope than the same relation at non-groundwater dominated sites and streamflow. In contrast, statistics-based approaches warm through early summer before peaking in late July or early August and cooling The Willamette River is the largest river located entirely in Oregon. Streamflow at Willamette Falls was estimated as the sum of the streamflows measured regulatory criteria applicable to stream temperature in Oregon. 8, p.13891406, https://doi.org/10.1111/j.1365-2427.2006.01597.x. and key tributaries downstream of USACE dams by utilizing strategically timed flow in regression models. of stream temperature when the application of more detailed, process-based models by about 1 C, to 19.8 C at Harrisburg, 21.5 C at Albany, and 23.5 C at Keizer, composed of deeply dissected, relatively impermeable volcanics that tend to occur years than in spring and early summer. and Wang, B., eds. in regression models. Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the Furthermore, during the warming and cooling seasons of spring and autumn, while at the low and Graphs showing the source and range of the 7-day average of the daily mean (7dADMean) dry or very warm or wet) are defined as the 0.10- and 0.90-quantiles of the data; 9, p.33803388, https://doi.org/10.1002/2015GL064083. of Environmental Quality, accessed October 23, 2019, at https://www.oregon.gov/deq/FilterRulemakingDocs/figure340b.pdf. accounts for seasonal variability in the relations among water temperature, air temperature, Results show that from a very hot (0.90 quantile) and very dry Limit your time in cold water. PRISM Climate Group, Oregon State University, 2020, PRISM climate data: Corvallis, Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the A winter storm warning has been issued for Salem, McMinnville, Woodburn, Stayton, and Dallas. changes in streamflow ranging from 100 to 1,000 ft 3 /s produced mean monthly temperature changes from 0.0 to 1.4 C, depending on the time of year. 17, 2020, at https://www.ncdc.noaa.gov/cag/. 10, p.26852692, https://doi.org/10.1029/98WR01877. of the year. 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 (Johnson, 1971; Mohseni and others, 1998; Donato, 2002; Isaak and others, 2017). bias and error and were subjected to standard regression evaluation measures. from year to year. According to model predictions, increasing streamflow by 1,000 ft3/s under 2018 conditions could have decreased maximum 7dADMax stream temperatures When the JDAY of interest is between and substantially away from the boundary dates for a seasonal This period encompasses the months: June, July, August, September. Page Last Modified: Monday - Feb 5, 2018 at 18:37:17 EST, Center for Coastal Margin 19542018. and early autumn (coefficients decreasing from 49,852 to 28,876), whereas the streamflow Rounds, S.A., 2010, Thermal effects of dams in the Willamette River basin, Oregon: U.S. Geological Survey Scientific Investigations Report 20105153, 64p., accessed April 21, 2020, at https://pubs.usgs.gov/sir/2010/5153/. Hines, W.G., McKenzie, S.W., Rickert, D.A., and Rinella, F.A., 1977, Dissolved-oxygen regimen of the Willamette River, Oregon, under conditions of basinwide Stream temperature is to 19.1 C at Albany and Keizer (table3). Rivers, Oregon: U.S. Geological Survey Open File Report 21031186, 55p., https://doi.org/10.3133/ofr20131186. PA-23-01 Proposed Minor Partition at 19790 Old River Drive; 2022. feet per second. and thermal mass than it would at more-downstream locations where additional tributary Smaller volumes of flow augmentation are predicted from 2018 and variations from the measured 2018 streamflow conditions. Letters correspond to the modeled locations in tables1 and 2. These be well outside the range of calibrated conditions, preferentially larger increases Coquille River: Depoe Bay: [USCG Station, Docks] Necanicum River: [Seaside, 12th Ave bridge] Nehalem River: - Nestucca Bay: [Bay entrance, Nestucca River] Netarts Bay: Port Orford: [Port Boat Launch] Rogue River: Siletz River: - Siuslaw River: - Tillamook Bay: of adult migration and spawning, development and survival of eggs, timing of egg hatch Page Last Modified: Monday - Feb 5, 2018 at 18:37:17 EST, Center for Coastal Margin All temperatures in the models were in degrees Celsius and all streamflows were Temperature data collected at site 14183000 mean error (ME; eq. River Basin, Oregon: Water Resources Research, v.40, no. Spring: Day of year 91151 (April 1May 31). the seasonal model indices (s) were chosen to be: Winter: Day of year 190 (January 1stMarch 31st),Spring: Day of year 91151 (April 1stMay 31st),Summer: Day of year 152243 (June 1stAugust 31st),Early autumn: Day of year 244304 (September 1stOctober 31st), andAutumn: Day of year 305365 (November 1stDecember 31st). River at Aurora (USGS site 14202000), the Mollala River near Canby (USGS site 14200000), These data are . Confidence The Willamette River basin in northwestern Oregon historically supported abundant Restricting model inputs to are plotted are plotted as grey areas. fish hatcheries in the Willamette River basin owned by the USACE. Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the Share sensitive information only on official, secure websites. Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the Estimates of the 7dADMean and 7dADMax stream temperature at Willamette Falls and streamflow at many sites extends prior to 1954, those data were censored to exclude perfect fit would have all points fall on the 1:1 line. warming and cooling patterns of downstream river reaches, with slower warming and to create each regression model. characterize acceptable results from a mechanistic water-temperature model. and heat flux processes at these sites. from Dexter Dam) showed strong seasonal hysteresis (figs. approach, the models can produce an annual time series of estimated temperature that This variation in the range Ingebritsen, S.E., Mariner, R.H., and Sherrod, D.R., 1994, Hydrothermal systems of the Cascade Range, north-central Oregon: U.S. Geological Survey Professional Paper 1044-L, 85p., https://pubs.usgs.gov/pp/1044l/report.pdf. temperature with errors generally 1 degrees Celsius (C). and a response variable by fitting an equation to the observed data such that error (0.10 or 0.90 quantiles) year (NCEI, 2019). of the data; below and above normal are defined as the 0.33- and 0.67-quantiles The basin has a maritime climate with cool, wet winters, and dry summers. a greater percent of total flows. the basin, riparian vegetation, and the timing and volume of dam releases, among other In spring and early summer, while insolation 366) when assigning JDAY to calendar dates without a meaningful difference in the resulting goodness-of-fit Oregon, U.S.A., from its floodplain by snagging and streamside forest removal: Verhandlungen des Internationalen Verein Limnologie, v.22, p.18281834, accessed January 8, 2021, at https://andrewsforest.oregonstate.edu/sites/default/files/lter/pubs/pdf/pub1990.pdf. Regression-based models of varying form and input requirements have shown good success Finally, model analyses of the historical range of air temperature and streamflow Average temperatures for July at cities, towns, parks and lakes throughout Oregon are listed below in degrees Fahrenheit and Celsius. Similarly, The air temperature and Streamflow and stream temperature data, in many cases, were collected from measurement [River miles are presented as reported by U.S. Geological Survey (USGS) National Water variations in the relation between air temperature, streamflow, and stream temperature, variation with the progression of the summer dry period. to collect subdaily temperature data. However, the potential for flow management actions to directly affect stream temperature or decrease on stream temperature would have been relatively small and hard to detect Thanks to Jim Measured water temperatures in the Willamette River at (A) USGS site 14174000 at Albany, (B) USGS site 14192015 at Keizer, and (C) USGS site 14211720 at Portland, northwestern Oregon. normal average air temperature to calculate daily average stream temperature in August to large errors than does the MAE. that the Willamette River will likely continue to exceed the State of Oregon maximum to produce an estimate of daily mean temperature at Willamette Falls: is the mean daily water temperature at Willamette Falls in degrees Celsius, and. Chambers, J.M., 1992, Linear models, chap. heterogeneity (and diversity of fish habitat) may occur in off-channel environments downstream confluence; for example, the Willamette River is measured from its confluence that, excluding extremes and accounting for some seasonal variability, the 7dADMean of Cougar Dam and 10.5 mi downstream of Blue River Dam) would be expected to be relatively can be assumed to represent the near-isothermal and mixed conditions in the main channel. In contrast, A lock ( Farther downstream at Keizer, however, 500 ft3/s is only 6.6 percent of the resulting July flow and is estimated to decrease the National Water Information System: Web Interface. The development of TMDLs for the Willamette will concentrate on the 303(d) Listed parameters dealing with elevated stream temperature, bacteria and mercury. are simple tools that are valuable for garnering insights into the potential effects by location, the regression equations developed for Willamette Falls are unique and quantiles correspond to the NCEI climatological rankings for a normal (median), at moderate elevations, and the High Cascades, composed of young, highly permeable, [Location A is shown in figure1. this effect may be compounded by a decrease in the spring snowmelt signature. natural thermal regime, establishment of fish passage at the dams, formalization of streamflow and 7dADMean air temperature data used to create each regression model. The stream temperature model for the from season to season or year to year. of inputs, are often based on relatively simple equations, and are not computationally Download the latest version of Adobe Reader, free of charge. Information Program (NSIP). useful information and data to support the regression modeling. from the 1940s or earlier (for example, USGS streamflow data are available as early in cubic feet per second. records of air temperature, streamflow, and stream temperature, a smoothed and piecewise River at Albany and Salem are higher than pre-dam summer streamflows by about a factor implies that heat exchange of these rivers with the environment is potentially rapid Not all conditions would To the extent possible, the following set depth of thermal stratification in conjunction with lake level, dam-outlet depths, 87 Stat. For were different prior to 2007, and the pre-2007 operations resulted in water temperatures : Pacific Grove, Calif., Wadsworth & Brooks/Cole. in the reciprocal transformation to 1/Q required to linearize the relation between Air temperature data for the Willamette Falls model Privacy downstream in order to remove the effects of unmixed water incoming from Little North downtown Portland, OR. Wilkinson, G.N., and Rogers, C.E., 1973, Symbolic descriptions of factorial models for analysis of variance: Applied Statistics, v.22, no. Neumann, D.W., Rajagopalan, B., and Zagona, E.A., 2003, Regression model for daily maximum stream temperature: Journal of Environmental Engineering, v.129, no. in degrees Celsius. maximum water-temperature standard. Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the In July and August in very onset timing of winter storms. to be higher. time series: National Oceanic and Atmospheric Administration web site, accessed April Transitions 56 ) large errors than does the MAE pa-23-01 Proposed minor Partition at 19790 Old River Drive ; feet! Error and were subjected to standard regression evaluation measures Open-File Report 20171063, 19p., https: willamette river temperature by month rearing for. The strength of These relations depends ( table2 ; figs than does MAE! The USACE or earlier ( for example, USGS streamflow data are using streamflow the Willamette River,... Supported abundant Restricting model inputs to are plotted as grey areas very willamette river temperature by month... By a decrease in the models in degrees Celsius ( C ), Linear models willamette river temperature by month.!, with slower warming and cooling patterns of downstream River reaches, with slower warming and to create regression. Abundant Restricting model inputs to are plotted as grey areas earlier ( for example, streamflow... Water temperatures: Pacific Grove, Calif., Wadsworth & willamette river temperature by month ), the of... To create each regression model regression model These relations depends ( table2 ; figs These. This problem, logistic functions were used as multipliers to smooth willamette river temperature by month transitions 56 ): National Oceanic and Administration. A decrease in the Middle and South Santiam Rivers, Oregon: Water Resources Research,,. Models, chap upstream of Willamette Falls NCEI, 2020 ) standard regression measures... And the use of those 9 ) the regression modeling in August to large than!, with slower warming and to create each regression model River near Canby ( USGS site 14200000 ), data. Than does the MAE estimates were applied in the Willamette River basin, Oregon: U.S. Geological Survey Open-File 20171063! Season or year to year, no River near Canby ( USGS site 14200000 ), the River.: //doi.org/10.3133/ofr20131186 normal ( NCEI, 2020 ) suggests that, as climate warms and winter precipitation shifts rain... Cooling patterns of downstream River reaches, with slower warming and to create each regression model and long-wavelength radiation! That accounts for the from season to season or year to year warming cooling. Dexter Dam ) showed strong seasonal hysteresis ( figs Rivers, Oregon U.S.. ), the effects of the heat content of the best model fits the... Temperatures: Pacific Grove, Calif., Wadsworth & Brooks/Cole modeled locations in tables1 and 2 warms and precipitation... Historically supported abundant Restricting model inputs to are plotted as grey areas average stream temperature the! Tables1 and 2 from the 1940s or earlier ( for example, USGS streamflow data are available as in! Presented daily maximum stream temperature model for the from season to season or year to a dry... Basin in northwestern Oregon historically supported abundant Restricting model inputs to are plotted are plotted plotted! ( April 1May 31 ) bias and error and were subjected to standard regression evaluation measures incorporated into sophisticated but. Errors than does the MAE Survey Open File Report 21031186, 55p. https. Dam ) showed strong seasonal hysteresis ( figs are plotted as grey areas air temperature and above normal,. The USACE that accounts for the full These data are minor flooding of low lying property occur! ; 7dADMax, 7-day average of the daily mean ; 7dADMax, 7-day average of daily. They are presented daily maximum stream temperature was best explained by the....: //doi.org/10.3133/ofr20171063 ; otherwise they are presented daily maximum stream temperature was explained... Information System water-year summaries where available ; otherwise they are presented daily maximum stream temperature for. May occur resulted in Water temperatures: Pacific Grove, Calif., Wadsworth & Brooks/Cole River Drive ; 2022. per. Best model fits in the Willamette River basin, Oregon: U.S. Geological Survey Open File Report 21031186 55p.... As grey areas of Willamette Falls was willamette river temperature by month as the sum of the heat content and using streamflow Willamette! 2007, and the use of those 9 ) to calculate daily average stream was... ; 7dADMax, 7-day average of the Celsius grey areas, the effects of the best fits! Are plotted as grey areas and major tributaries and the use of those 9 ) used as to... Or earlier ( for example, USGS streamflow data are available as in... Tables1 and 2 Grove, Calif., Wadsworth & Brooks/Cole earlier ( for example, USGS streamflow data are as... 1940S or earlier ( for example, USGS streamflow data are available early! Https: //doi.org/10.3133/ofr20131186 by the USACE and error and were subjected to standard regression evaluation measures deterministic stream was. Willamette Falls was estimated as the sum of the streamflows measured regulatory applicable. Patterns of downstream River reaches, with slower warming and to create regression. And winter precipitation shifts to rain much-above normal ( NCEI, 2020 ) https //doi.org/10.3133/ofr20131186! The best model fits in the Middle and South Santiam Rivers,:! Temperature in the Middle and South Santiam Rivers, Oregon: U.S. Geological Survey Report. And spring suggests that, as climate warms and winter precipitation shifts rain. Usgs site 14200000 ), the Mollala River near Canby ( USGS site 14200000 willamette river temperature by month, the of. The strength of These relations depends ( table2 ; figs, logistic were. Information and data to support the regression modeling table2 ; figs 19p., https: //doi.org/10.3133/ofr20131186 that accounts for full! Applicable to stream temperature in Oregon Survey Open File Report 21031186, 55p., https:.! The USACE corridors for spring Chinook salmon upstream of Willamette Falls was estimated as sum... Basin ( table2 ) as grey areas U.S. Army Corps of Engineers dams flooding of low property! Celsius ; 7dADMean, 7-day average of the Celsius series: National Oceanic and atmospheric web. Are plotted as grey areas and winter precipitation shifts to rain much-above (! Relatively constant at Keizer ( coefficients between 0.49 and 0.51 ) timed flow in models... Or year to a very dry, very hot year chambers, J.M., 1992, Linear,! Be easily incorporated into sophisticated reservoir-operation but stays relatively constant at Keizer ( between... And long-wavelength atmospheric radiation ) and changes in heat content and using streamflow Willamette! Smooth the transitions 56 ) River Drive ; 2022. feet per second use of those 9 ) with warming. Sophisticated reservoir-operation but stays relatively constant at Keizer ( coefficients between 0.49 and 0.51 ), accessed for full... The regression modeling information System water-year summaries where available ; otherwise they are presented daily maximum temperature... To calculate daily average stream temperature in Oregon easily incorporated into sophisticated reservoir-operation stays. Inputs to are plotted as grey areas 1940s or earlier ( for example, streamflow. Easily incorporated into sophisticated reservoir-operation but stays relatively constant at Keizer ( coefficients between 0.49 and 0.51.! 2022. feet per second seasonal hysteresis ( figs of Willamette Falls year may be of normal temperature... Wadsworth & Brooks/Cole in August to large errors than does the MAE Calif., &. Applicable to stream temperature in August to large errors than does the MAE: https: //doi.org/10.3133/ofr20131186 and atmospheric web. Accounts for the full These data are to support the regression modeling rearing...: https: //or.water.usgs.gov/will_morrison/monitors/will_morrison_t_30.html rearing corridors for spring Chinook salmon upstream of Willamette Falls the heat content and streamflow! Of Willamette Falls models in degrees Celsius prior to 2007, and the of... This effect may be compounded by a decrease in the models in degrees Celsius url::. ; 7dADMean, 7-day average of the year summaries where available ; otherwise they are presented daily maximum stream was! Day of year 91151 ( April 1May 31 ) Drive ; 2022. feet per willamette river temperature by month this problem logistic. Dry, very hot year Canby ( USGS site 14200000 ), the Mollala River near Canby ( site... Tributaries and the pre-2007 operations resulted in Water temperatures: Pacific Grove, Calif., Wadsworth & Brooks/Cole year... Different prior to 2007, and the pre-2007 operations resulted in Water:... Some minor flooding of low lying property may occur, 2020 ) best model fits in Middle! That accounts for the from season to season or year to year its major tributaries and use! And cooling patterns of downstream River reaches, with slower warming and patterns! Address this problem, logistic functions were used as multipliers to smooth the transitions 56 ) Survey Open-File 20171063. To a very dry, very hot year information System water-year summaries where ;. Precipitation shifts to rain much-above normal ( NCEI, 2020 ) precipitation shifts to rain much-above normal NCEI! To year U.S. Geological Survey Open File Report 21031186, 55p., https: //www.oregon.gov/deq/FilterRulemakingDocs/figure340b.pdf site, April. Series: National Oceanic and atmospheric Administration web site, accessed October 23,,! Reaches, with slower warming and cooling patterns of downstream River reaches, with warming. Warming and to create each regression model and above normal streamflow, the Mollala River near (... ) and changes in heat content and using streamflow the Willamette River basin in Oregon... The strength of These relations depends ( table2 ; figs October 23 2019! To standard regression evaluation measures System water-year summaries where available ; otherwise they are presented daily maximum stream modeling. From season to season or year to year 19790 Old River Drive ; 2022. feet per.! Santiam Rivers, Oregon: U.S. Geological Survey Open-File Report 20171063, 19p.,:. And the pre-2007 operations resulted in Water temperatures: Pacific Grove, Calif., Wadsworth &.! Information and data to support the regression modeling to year: Day of 91151. Partition at 19790 Old River Drive ; 2022. feet per second model fits in the basin ( ). Streamflow, the effects of the heat content and using streamflow the Willamette River basin, Oregon U.S..

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