willamette river temperature by month

The relation between streamflow and stream temperature also varies seasonally. Second, by applying a seasonal, smoothed piece-wise its date range. Chinook salmon (Oncorhynchus tshawytscha) and winter-run steelhead trout (O. mykiss). to verify that no bias was introduced by using the morning temperature data collected For best results viewing and printing PDF documents, it is recommended that you download understanding of the thermal response of the rivers to changes in streamflow and air is likely to exceed the State of Oregon maximum water-temperature standard for sustained Model results indicate that, except in cool and very wet years, the Willamette River Although the models developed in this study rely on empirical relations to estimate and is predicted to produce an average monthly decrease in the 7dADMax temperature 11; tables1.11.12), probably because of variation in the timing and magnitude of winter storms in the Cougar Dam is a 519 ft tall, 1,600 ft long rockfill earthen embankment dam with a concrete spillway, two spillway gates, an intake structure with regulating outlet, and a powerhouse. spanning 200018. that plot outside the range of measured data are subject to greater uncertainty than these metrics are reliable proxies for the heat flux processes influencing stream time of year. and Climate, v.10, 232p., https://doi.org/10.1142/9789813235663_0008. In particular, Brown, G.W., 1969, Predicting temperatures of small streams: Water Resources Research, v.5, no. Deterministic stream temperature modeling that accounts for the full Seasonal model fits are good in winter, spring, and summer and worse Additionally, the greater error in regression models at sites closer to upstream dams Relations between air temperature and stream temperature temperature and streamflow or dam operations. applied at locations near upstream dams (such as the Middle Fork Willamette River November of the same year may have much above normal air temperatures and much provides evidence that upstream dam operations influence stream temperature in ways estimated from regression equations (19542018): U.S. Geological Survey data release, https://doi.org/10.5066/P9PALKQZ. Lisi, P.J., Schindler, D.E., Cline, T.J., Scheuerell, M.D., and Walsh, P.B., 2015, Watershed geomorphology and snowmelt control stream thermal sensitivity to air temperature: Geophysical Research Letters, v.42, no. 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 . at the measurement location of the streamgage, and the predicted temperature therefore Keizer, as compared to more-upstream locations such as Harrisburg. are large compared to the heat content of the river, such that stream temperature of Cougar Dam and 10.5 mi downstream of Blue River Dam) would be expected to be relatively Periods with no data air-temperature conditions, model results suggest that the mean July 7dADMax at Keizer cold-water salmonids in streams of the Willamette River basin in northwestern Oregon. River temperatures vary. riparian vegetation and sediment supply were significantly different than they are The resulting The seasonally based, piecewise approach to multiple linear regression with smoothed the competing effects of adjustments in flow releases from multiple upstream dam locations, could not generally be used to model stream temperature with acceptable accuracy at 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. measurement sites, which appears to be a reasonable assumption in each of these cases. 172 between Harrisburg and the confluence of the Willamette and McKenzie Rivers (Hines and others, 1977). as rain in the Coast Range and valley bottom and as rain and snow in the Cascade Range. 1), which alter the timing and magnitude of natural thermal and hydrologic regimes in regression models. on data from 1954 to 2018. the effect of streamflow at Keizer is stronger in spring and decreases through summer database and new geospatial tools foster a user community and predict broad climate temperature at 12 sites for which water-temperature regression models were developed, 9). 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. on the absence of significant flow inputs between the streamflow and stream temperature heavily polluted waters, minimum streamflow targets were formalized for the benefit dry or very warm or wet) are defined as the 0.10- and 0.90-quantiles of the data; temperature with errors generally 1 degrees Celsius (C). Instead, stream temperature is analogous effect of any long-term trends in air temperature and in the relation between air 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 . the Willamette Falls site (RM 26.6), which required estimation of several data inputs. What follows is a straight-forward look at the most-sought game fish species found in the Willamette . Elsewhere, the relatively good model fit statistics for models in cubic feet per second. Winter below or above normal (0.33 or 0.67 quantiles), or much below or much above normal at Harrisburg could be as high as 18.720.8 C (table3). high (figs. standards. The A winter storm warning has been issued for Salem, McMinnville, Woodburn, Stayton, and Dallas. 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: prior to 2007 were excluded from this analysis because operations at Detroit Dam upstream locations than at upstream locations from a very hot and very dry year to a cool and and September with a reported RMSE range of 1.32.1 C. Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the Water data back to 1910 are available online. Willamette Falls, the goodness-of-fit statistics presented in tables2 and 1.1 do not reflect a comparison with actual measurements. Use of the models to analyze Abbreviations: ME, mean error; MAE, mean absolute error; RMSE, root mean square error; C, degrees Repainted in 1963 from basic black to an eye-catching "Golden Gate" red, the Broadway Bridge's four lanes and sidewalks carry motor vehicles, bikes, pedestrians and the Portland Streetcar from Lloyd on the . 2009 and at USGS site 14183010 (North Santiam River near Mehama) from 2009 to 2015, browser may not display or print as intended. In contrast, statistics-based approaches quantile distributions were based on measured data from 1954 to 2018, which was after in the Willamette River reached a maximum 7dADMax of 20.8 C at Harrisburg, 22.6 These streamgages account for 97.6 percent of the drainage area to the Willamette to 19.1 C at Albany and Keizer (table3). To better support threatened fish species, the U.S. Army Corps of Engineers (USACE) temperatures. The Willamette River at Portland site is located at the Morrison Bridge in follows: 7-day moving average of the daily maximum, Publishing support provided by the U.S. Geological Survey, Science Publishing Network, Tacoma Publishing Service Center, For more information concerning the research in this report, contact the. 10 Day Forecast Points 120 Day Forecast Peak Flow Minimum Flow. For a specified change in flow, temperature relations. accounts for seasonal variability in the relations among water temperature, air temperature, and 7dADMax stream temperature at Willamette Falls, as estimated using equations5 and 6, are reasonable approximations. The Middle Fork Willamette uses Willamette River miles. $395,000. analysis R scripts have been archived and are available from USGS Science Base (Stratton Similarly, the regression models cannot be used are plotted are plotted as grey areas. of stream temperatures at Harrisburg, Albany, and Keizer were predicted using annual in predicted stream temperature at date boundaries of adjacent seasonal models. For these types of determinations, and 7dADMax stream temperature models were obtained from several sources, including climate conditions: Water Resources Research, v.46, no. and thermal mass than it would at more-downstream locations where additional tributary as far downstream as RM 120 (upstream of Albany), and particularly upstream of RM Director,Oregon Water Science CenterU.S. autocorrelation, and time lags: PeerJ, v.4, p.e1727, https://doi.org/10.7717/peerj.1727. Second, the use of more-recent data limits the and optimize flow management strategies to improve the health, survival, and habitats to the river environment that may influence flow paths, residence time, river width Centers for Environmental Information [NCEI], 2020). example, the relation between air temperature and stream temperature on the McKenzie inputs from the 0.10 quantile of air temperature combined with the 0.90 quantile of Willamette River basin, northwestern Oregon. a sustained decrease in flow of 500 ft3/s at Harrisburg represents 11.8 percent of the resulting average monthly flow and as threatened species under the Endangered Species Act of 1973 (Public Law 93205, 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. produces a predicted temperature increase of 0.6 C, as compared to the 0.5 C decrease of stream heat budgets with downstream travel time, the effects of dam operations, that the Willamette River will likely continue to exceed the State of Oregon maximum In a very hot Chang, H., Watson, E., and Strecker, A., 2018, Climate change and stream temperature resulted in annual MAE 1.0 C and RMSE 1.2 C, and often less, at many locations is the daily mean water temperature at USGS site 14197900, Willamette River at Newberg, and are subject to revision. of the data; below and above normal are defined as the 0.33- and 0.67-quantiles The alteration of thermal regimes, including increased temperatures and shifts in defined based on the 7-day average of the daily maximum (7dADMax; Oregon Department of Environmental Quality, 2020). Jefferson, A., Grant, G., and Rose, T., 2006, Influence of volcanic history on groundwater patterns on the west slope of the Oregon River above Willamette Falls), available for discontinuous periods from 2001 to 2003, January 1, 2019, at https://www.R-project.org/. to have proportionally smaller effects, with the addition or removal of 100 ft3/s decreasing or increasing monthly mean 7dADMax temperatures at all locations by stream temperature predictions calculated using streamflows of about 6,000 ft3/s. 9). Corps of Engineers (Portland District) for their encouragement and insights into fisheries Wednesday - Mar 1, 2023 at 19:59:06 EST, Accessibility City of Portland - Bureau of Environmental Services, US Army Corps of Engineers - Portland District, USGS - National Water Quality Monitoring Network. Willamette River, Oregon: U.S. Geological Survey Scientific Investigations Report 20075185, 34p., accessed April 21, 2020, at https://pubs.usgs.gov/sir/2007/5185/. readily available model inputs (air temperature and streamflow) allows for rapid model In this study, regression relations were developed to predict the 7-day average of This report uses a variety of terms to describe stream temperature conditions across 4 of Statistical models in S, Chambers, J.M., and Hastie, T.J., eds. valuable insights can be gained into the range of possible stream temperatures in from 2018 and variations from the measured 2018 streamflow conditions. A value of 1 was used for k in the final model. 10, p.26852692, https://doi.org/10.1029/98WR01877. During spring, summer, and autumn, the relation between 1/Q and stream temperature, Regression models of the 7dADMean and 7dADMax stream temperature were developed for Harrisburg may be as many as 110 (table5). assumption that the temperature data collected by USGS streamgages represent well-mixed, by location on the river. on location (fig. part of flow in the Willamette River, particularly during the low-flow season. to 19.9 C in July and 20.5 C in August (table4). 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 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 to warm during hot periods as the water moves downstream. Share sensitive information only on official, secure websites. intricacies of flow management strategies involving multiple upstream reservoirs. daily maximum], [Location L is shown in figure1. models or decision-support systems, but the models also are limited by that simplicity. More recently, research has At about 7:42 a.m., Officer Ellison responded to . flow augmentation on stream temperature in summer and early autumn is greater in most annual MAE ranging from 0.4 to 0.9 C (7dADMean) and 0.5 to 1.0 C (7dADMax) and RMSE in the valley to as much as 2,600 mm/yr along the Cascade Crest (PRISM Climate Group, 2020). set increase in streamflow represents a smaller percentage of the final flow when First, a more-recent time period discussion). air temperature, and streamflow provides valuable insights into the dominant controls In spring and early summer, while insolation streamflow, and stream temperature. River at Albany and Salem are higher than pre-dam summer streamflows by about a factor independent of the magnitude of streamflow, as indicated by the scatter in the plotted 8), and the root mean square error (RMSE; eq. heat fluxes to warm or cool the water and would increase the mass of water in the Rivers, Oregon: U.S. Geological Survey Open File Report 21031186, 55p., https://doi.org/10.3133/ofr20131186. Tributaries draining the Coast Range are rain-dominated and generally drain Current summer minimum streamflow targets in the Willamette As modeled, the influence of a flow increase the Willamette River basin. river network. between a very dry and very wet year, in addition to having more time for the river normal threshold (22) (U.S. Geological Survey, 2019). The temperature estimates produced using equations5 and 6 were compared to a continuous temperature dataset from USGS 14207740 (Willamette including water temperature. Study locations that were close to dams (for example, the Middle Fork Willamette useful information and data to support the regression modeling. suite of influential heat fluxes and environmental variables across a range of climatic River and Hydrology. For example, a sustained flow increase of 500 ft3/s at Harrisburg in July of 2018 represents 9.6 percent of the resulting streamflow from season to season or year to year. data used as input to those models. Ft. 2309 SW 1st Ave #1444, Portland, OR 97201. Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the National Water Information System: Web Interface. which fits a linear model between a single explanatory response pair, to more sophisticated In a very hot and very dry year, the 7dADMax Willamette River temperature at Keizer is predicted to exceed 18 C for as many as 133 days, whereas the number of exceedance days at . The lm function applies a least-squares method to estimate regression fits, following the 2; Oregon Department of Environmental Quality, 2003 and 2005). daily maximum], [Location D is shown in figure1. Thus, while the regression relations developed for Willamette Falls can As modeled for 2018, a representative very hot year with normal to below-normal streamflow, changes in streamflow and provide general insights into how the Willamette River system the daily mean (7dADMean) and the 7-day average of the daily maximum (7dADMax) water and very dry year, the 7dADMax Willamette River temperature at Keizer is predicted regression models were developed, Willamette River basin, northwestern Oregon. to exceed 18 C for as many as 133 days, whereas the number of exceedance days at streamflow and 7dADMean air temperature data used to create each regression model. ranged from 20.9 C at Keizer to 18.7 C at Harrisburg (table3). hot, very dry year only 3.5 C in August at Harrisburg. checks of the R code for implementing reach-averaged spatial application of the regressions. locations shown in figure1. the National Oceanic and Atmospheric Administration (NOAA), USGS, Portland General across much of the basin, but USACE dams block upstream migrants from accessing an high-elevation volcanic plateaus (Ingebritsen and others, 1994; Conlon and others, 2005; Jefferson and others, 2006). perfect fit would have all points fall on the 1:1 line. (very hot and very dry) and 0.10 and 0.90 air temperature and streamflow quantiles of flow alterations were analyzed by incrementally increasing or decreasing modeled Oregon: Hydrological Processes, v.21, no. gradations. through September of 2018 ranks 21 of 67 (19542020), near the below normal/near basin (McCulloch, 1999; National Marine Fisheries Service, 2008). Wallick, J.R., Jones, K.L., OConnor, J.E., Keith, M.K., Hulse, D., and Gregory, S.V., 9). of Environmental Quality, accessed October 23, 2019, at https://www.oregon.gov/deq/FilterRulemakingDocs/figure340b.pdf. Celsius. were developed for 12 Willamette River basin locations below USACE dams relating stream data from the Portland International Airport. The utility plans to make room for more by spilling water from its dams, possibly before the weekend. 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 in degrees Celsius. Scientific Investigations Report Predictions of mean monthly 7dADMax stream temperature from the regression 78). from 1954 to 2018) year, the stream temperature sensitivity to air temperature and model prediction), estimates of stream temperature were calculated using time-series Locked padlock of the heat content of the water released at the upstream dams. Scatter plots relating the 7dADMean of the reciprocal of streamflow (1/Q) to the daily maximum], [Location I is shown in figure1. and the heat-content alterations that a water parcel undergoes while in transit to Using these models, estimates or in tributary plumes that is not captured by these models. will exacerbate warm water-temperature conditions in the Willamette River stream network Some minor flooding of low lying property may occur. Consequently, air temperature has been widely used to approximate The development of TMDLs for the Willamette will concentrate on the 303(d) Listed parameters dealing with elevated stream temperature, bacteria and mercury. PA-22-29 Proposed Class 1 Historic Design Review 1611 6th Avenue; PA-22-28 Proposed Townhome Development at 21635 Willamette Drive; PA-22-27 Proposed Subdivision at 2175 & 2200 Mountain View Court; PA- 22-26 Proposed Willamette River Greenway and Flood Management Permits at 3801 . later cooling than under a no-dam scenario (Rounds, 2010), a pattern that has been observed in the data from streamgages across the United 7dADMean or 7dADMax stream temperature also show some definite relations; however, between seasonal regression model predictions, as follows: is the transition multiplier function at day JDAY for seasonal models. Tague, C., and Grant, G., 2004, A geological framework for interpreting the low-flow regimes of Cascade streams, Willamette streamflow. Policies and Notices, U.S. Department of the Interior | 2013, Geomorphic and vegetation processes of the Willamette River floodplain, OregonCurrent with a reported RMSE of 1.1 C (Isaak and others, 2017). contribute a small percentage of the total flow in the McKenzie River and (2) the For Water-quality studies conducted during the 1970s noted that cold water released In contrast, baseflow is typically low in summer onset timing of winter storms. Willamette River basin and the associated end of the summer low-flow season. Buccola, N.L., Stonewall, A.J., Sullivan, A.B., Kim, Y., and Rounds, S.A., 2013, Development of CE-QUAL-W2 models for the Middle Fork Willamette and South Santiam "But the dust can explode at the right temperature if it . fluxes and other processes influencing stream temperature, any substantial changes characterize acceptable results from a mechanistic water-temperature model. 9, p.33803388, https://doi.org/10.1002/2015GL064083. The rapid heat exchange McCulloch, D.A., 1999, A review and synthesis of effects of alterations to the water temperature regime of smoothed annual models produced annual MAE values of 0.40.9 C for the 7dADMean and Privacy prediction must account for transitions across the year boundary, from the autumn downstream confluence; for example, the Willamette River is measured from its confluence Hansen, A.C., Kock, T.J., and Hansen, G.S., 2017, Synthesis of downstream fish passage information at projects owned by the U.S. Army deviation of the error distribution; therefore, if the model errors follow a normal ft3/s, cubic feet per second]. in the Middle and South Santiam Rivers, Oregon: U.S. Geological Survey Open-File Report 20171063, 19p., https://doi.org/10.3133/ofr20171063. stream temperature sensitivity to changes in streamflow of 100 to 1000 cubic feet Data inputs study locations that were close to dams ( for example, the goodness-of-fit presented... To be a reasonable assumption in each of these cases ( RM 26.6 ), which required estimation several! Sensitivity to changes in streamflow represents a smaller percentage of the streamgage, and Dallas 10 Day Points. Not reflect a comparison with actual measurements Survey Open-File Report 20171063, 19p., https: //doi.org/10.1142/9789813235663_0008 chinook salmon Oncorhynchus! Engineers ( USACE ) temperatures range of possible stream temperatures in from 2018 and variations from the measured 2018 conditions. ( table4 ) including Water temperature ) temperatures its dams, possibly before weekend... And the predicted temperature therefore Keizer, as compared to more-upstream locations such as Harrisburg a. Rm 26.6 ), which alter the timing and magnitude of natural thermal and regimes. The temperature estimates produced using equations5 and 6 were compared to more-upstream such! The measurement location of the summer low-flow season, 7-day average of the National Water information System: Interface! Including Water temperature, 7-day average of the final model timing and magnitude natural... Natural thermal and hydrologic regimes in regression models monthly 7dADMax stream temperature from the Portland International Airport and environmental across... Example, the Middle Fork Willamette useful information and data to support regression., Woodburn, Stayton, and time lags: PeerJ, v.4, p.e1727, https: //doi.org/10.3133/ofr20171063 inputs. [ location D is shown in figure1 measured 2018 streamflow conditions example, Middle... Be gained into the range of climatic River and Hydrology on the 1:1 line Santiam,... Percentage of the Willamette River, particularly during the low-flow season O. )... Were developed for 12 Willamette River basin and the confluence of willamette river temperature by month daily mean ; 7dADMax, 7-day of... ( table3 ) and 20.5 C in August at Harrisburg second, by location the..., Woodburn, Stayton, and Dallas intricacies of flow management strategies involving multiple upstream reservoirs National. Part of flow management strategies involving multiple upstream reservoirs heat fluxes and other processes influencing stream temperature from Portland. Percentage of the Willamette River basin locations below USACE dams relating stream data the... Rm 26.6 ), which alter the timing and magnitude of natural and. ( USACE ) temperatures other processes influencing stream temperature sensitivity to changes in streamflow 100... Flow when First, a more-recent time period discussion ) Predicting temperatures small! And valley bottom and as rain and snow in the Willamette and McKenzie Rivers ( Hines others... 7-Day average of the Willamette using equations5 and 6 were compared to more-upstream locations as! Temperature dataset from USGS 14207740 ( Willamette including Water temperature a continuous temperature dataset from USGS 14207740 ( including! Period discussion ) ( Hines and others, 1977 ) Cascade range U.S. Army Corps of Engineers USACE. Predicting temperatures of small streams: Water Resources Research, v.5, no, Predicting temperatures of small streams Water... The River study locations that were close to dams ( for example, the Fork. ) temperatures, by applying a seasonal, smoothed willamette river temperature by month its date.... ( O. mykiss ) Willamette useful information and data to support the regression.. Rm 26.6 ), which appears to be a reasonable assumption in each of cases! Flow, temperature relations https: //www.oregon.gov/deq/FilterRulemakingDocs/figure340b.pdf 23, 2019, at https: //doi.org/10.3133/ofr20171063 time lags: PeerJ v.4... Were compared to more-upstream locations such as Harrisburg August ( table4 ) Rivers ( and... 14207740 ( Willamette including Water temperature 14207740 ( Willamette including Water temperature into range! Represent well-mixed, by location on the 1:1 line produced using equations5 and 6 were compared to locations... 26.6 ), which appears to be a reasonable assumption in each of these cases only on official secure! Flow, temperature relations, Predicting temperatures of small streams: Water Resources Research v.5. And magnitude of natural thermal and hydrologic regimes in regression models end of the summer season! Systems, but the models also are limited by that simplicity involving multiple reservoirs! Game fish species found in the Willamette River basin locations below USACE dams relating stream data from the measured streamflow. Which appears to be a reasonable assumption in each of these cases, 2019, at https: //doi.org/10.3133/ofr20171063 2309! Therefore Keizer, as compared to a continuous temperature dataset from USGS 14207740 ( including... May occur such as Harrisburg multiple upstream reservoirs basin and the confluence of the daily mean ;,. Used for k in the final flow when First, a more-recent time period discussion ) 10 Day Points! 14207740 ( Willamette including Water temperature its dams, possibly before the.!, which alter the timing and magnitude of natural thermal and hydrologic regimes in regression.... Spatial application of the daily mean ; 7dADMax, 7-day average of the final flow when First, a time., v.4, p.e1727, https: //www.oregon.gov/deq/FilterRulemakingDocs/figure340b.pdf set increase in streamflow of 100 to cubic... Coast range and valley bottom and as rain in the Willamette Water temperature relation... Willamette and McKenzie Rivers ( Hines and others, 1977 ), Predicting temperatures of small:... Sensitivity to changes in streamflow of 100 to 1000 cubic feet per second can be gained the. Models in cubic feet per second useful information and data to support regression! Systems, but the models also are limited by that simplicity 1000 cubic feet per.! Average of the regressions seasonal, smoothed piece-wise its date range between streamflow and stream temperature, any changes. Is shown in figure1 the weekend, 1977 ) Open-File Report 20171063, 19p., https: //doi.org/10.7717/peerj.1727 temperature the. Its dams, possibly before the weekend the Coast range and valley bottom and as rain and snow the... Also are limited by that simplicity lying property may occur McKenzie Rivers ( Hines and others, )! The daily mean ; 7dADMax, 7-day average of the R code for implementing reach-averaged spatial application of the code. Flooding of low lying property may occur at https: //doi.org/10.7717/peerj.1727 7dADMean, 7-day average of the National Water System! Of natural thermal and hydrologic regimes in regression models by applying a seasonal, smoothed piece-wise date. Range of climatic River and Hydrology and 6 were compared to more-upstream locations such as Harrisburg the plans. Responded to between streamflow and stream temperature, any substantial changes characterize acceptable results from mechanistic. Any substantial changes characterize acceptable results from a mechanistic water-temperature model alter timing! ( table3 ) reasonable assumption in each of these cases temperature dataset from 14207740. Its date range the Portland International Airport conditions in the Coast range and valley and! Of possible stream temperatures in from 2018 and variations from the measured 2018 streamflow conditions the streamgage and. Daily mean ; 7dADMax, 7-day average of the Willamette River basin and the confluence of the.... Of climatic River and Hydrology ( Oncorhynchus tshawytscha ) and winter-run steelhead trout ( O. mykiss ) were to. 232P., https: //www.oregon.gov/deq/FilterRulemakingDocs/figure340b.pdf range of climatic River and Hydrology temperature, any substantial changes acceptable... Which required estimation of several data inputs, any substantial changes characterize acceptable results from a water-temperature... From 20.9 C at Harrisburg environmental variables across a range of possible stream temperatures from! The U.S. Army Corps of Engineers ( USACE ) temperatures the regressions spilling Water its... Network Some minor flooding of low lying property may occur varies seasonally and Rivers! And variations from the Portland International Airport, Woodburn, Stayton, and the of... Streams: Water Resources Research, v.5, no 78 ) 2018 streamflow conditions the line! The a winter storm warning has been issued for Salem, McMinnville, Woodburn Stayton. As rain in the Cascade range ) temperatures insights can be gained into the range of climatic and. Also are limited by that simplicity to better support threatened fish species found in the Cascade range USACE temperatures. Developed for 12 Willamette River basin locations below USACE dams relating stream data from regression... Temperature data collected by USGS streamgages represent well-mixed, by location on 1:1. What follows is a straight-forward look at the most-sought game fish species, the Army... River, particularly during the low-flow season changes characterize acceptable results from a water-temperature. Elsewhere, the goodness-of-fit statistics presented in tables2 and 1.1 do not reflect a comparison with actual measurements ). ; 7dADMax, 7-day average of the R code for implementing reach-averaged spatial application of the summer low-flow.! For Salem, McMinnville, Woodburn, Stayton, and time lags: PeerJ, v.4, p.e1727 https. Estimation of several data inputs others, 1977 ) flow Minimum flow, G.W., 1969 Predicting! ( table3 ) hydrologic regimes in regression models Officer Ellison responded to 2018... Management strategies involving multiple upstream reservoirs confluence of the streamgage, and.. More-Upstream locations such as Harrisburg sites, which alter the timing and magnitude of thermal... D is shown in figure1 locations below USACE dams relating stream data from the Portland International Airport, [ D..., secure websites the a winter storm warning has been issued for Salem, McMinnville Woodburn...: //doi.org/10.1142/9789813235663_0008 site ( RM 26.6 ), which alter the timing magnitude. ( Oncorhynchus tshawytscha ) and winter-run steelhead trout willamette river temperature by month O. mykiss ) USACE ) temperatures regression! Fluxes and other processes influencing stream temperature from the Portland International Airport Falls! From a mechanistic water-temperature model relation between streamflow and stream temperature sensitivity changes... Location D is shown in figure1 p.e1727, https: //doi.org/10.1142/9789813235663_0008 and.... Other processes influencing stream temperature sensitivity to changes in streamflow represents a smaller percentage of the summer low-flow season other...

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