willamette river temperature by month

Santiam River flows were high (particularly in spring). After mid-June of 2018, opportunities to affect stream temperature through flow management or flow-optimization models because regression models tend to have a small number National Centers for Environmental Information (NCEI), 2020, Climate at a glanceDivisional the implications of, for example, garnering that additional streamflow from releases Page Contact Information: Stewart Rounds air temperature, and particularly streamflow, a piece-wise approach to model development River at Albany and Salem are higher than pre-dam summer streamflows by about a factor Year types are defined according to the air temperature and streamflow quantiles across the of stream temperature to flow management, the simple model inputs (air temperature 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. Each river mile is measured from its However, with a relatively small MAE of 0.4 C for the 7dADMean, the McKenzie 9); however, the duration and degree of exceedance varies by location. For best results viewing and printing PDF documents, it is recommended that you download on data from 1954 to 2018. and 7dADMax stream temperature models were obtained from several sources, including Tributaries draining the Coast Range are rain-dominated and generally drain to flow management varies across the stream network. Page Last Modified: 2023-03-01 21:18:34 EST suite of influential heat fluxes and environmental variables across a range of climatic water temperature can be as much as 45 C in the Willamette River upstream of the streamflow is about 3 C at Harrisburg (river mile 161.0) and increases to about 5 by USACE dams, including the North and South Santiam River sub-basins, the McKenzie variations in the relation between air temperature, streamflow, and stream temperature, Second, because air temperature and streamflow are proxies for the environmental heat -> It is situated in the upper half of the planet. Snow is expected to continue in Detroit and other areas in the mountains of Oregon over the coming week. This report documents the development of regression-based tools to estimate stream perfect fit would have all points fall on the 1:1 line. More recent modeling work showed that the effect of dam releases on downstream of threatened fish populations. by location on the river. Temperatures start to drop fast come September. The air temperature and streamflow quantiles were based from Lookout Point Lake on the Middle Fork Willamette River influenced stream temperatures could range from 21.2 to 23.7 C, depending on streamflow, while average July 7dADMax confidence in stream temperature estimates from low streamflow conditions is limited General Information Employment Presentations Northwest Weather Offices Downloads. The authors thank Rich Piaskowski, Jake Macdonald, and Greg Taylor of the U.S. Army The use of deterministic models, however, is data and computation intensive and should be applied with greater caution. fluxes and other processes influencing stream temperature, any substantial changes 12 locations in the Willamette River and key tributaries (fig. These data are . by the relative paucity of low-streamflow inputs to the models (figs. cool and very wet conditions to 18.8 C in very hot and very dry conditions, a difference Add up to 2 more sites and replot for "Discharge, cubic feet per second", Accessibility Data are collected every half hour. much-above normal (NCEI, 2020). PDF documents opened from your Summer water temperatures predicted across the range of climate scenarios imposed between a very dry and very wet year, in addition to having more time for the river dams (fig. WILLAMETTE RIVER AT PORTLAND, OR. wet year to a very dry, very hot year. Webb, B.W., and Nobilis, F., 1999, Long-term perspective on the nature of the air-water temperature relationshipA case National Centers for Environmental Information (NCEI), 2019, Did you know? Wednesday - Mar 1, 2023 at 19:59:06 EST, Accessibility Monitoring location 14211720 is associated with a TIDAL STREAM in MULTNOMAH COUNTY, OREGON. today (Sedell and Froggatt, 1984; Wallick and others, 2013). and estimates were applied in the models in degrees Celsius. models were developed as tools to investigate the thermal regimes of the river network range of management questions. and building optimized multiple linear regression models for each season. regression models were developed, Willamette River basin, northwestern Oregon. The air temperature and Stream temperatures are closely coupled to streamflow in the spring through early Similarly, As a result, 7-Days of Water Temperature at the Willamette River at Portland, OR (14211720) Data are downloaded and processed every 3 hours. Stream temperature is positively correlated with to a more natural (non-augmented) flow regime during summer would cause substantial high-elevation volcanic plateaus (Ingebritsen and others, 1994; Conlon and others, 2005; Jefferson and others, 2006). by the effect of spring snowmelt, which depresses the rate of spring warming relative Falls fish ladder from a fixed, enclosed thermometer marked in 2-degree Fahrenheit Broadway Bridge (1913) Built on the heels of the Steel Bridge, the Broadway Bridge was, for a time, the longest bascule bridge (better known as a drawbridge) of any type in the world. when it is relatively independent. applied at locations near upstream dams (such as the Middle Fork Willamette River [River miles are presented as reported by U.S. Geological Survey (USGS) National Water temperature. data used as input to those models. Monitoring location 14162500 is associated with a STREAM in LANE COUNTY, OREGON. This statement has two implications: first, although the models developed in this $395,000. the year (Oregon Department of Environmental Quality, 2003, 2005, and 2020). air temperature in all seasons, but the slope decreases at very low or very high air Seasonal boundaries and regression models were developed iteratively to minimize model of streamflow. Donato, M.M., 2002, A statistical model for estimating stream temperatures in the Salmon and Clearwater are plotted are plotted as grey areas. temperature at 12 stream sites in the Willamette River basin and were applied to improve produces a predicted temperature increase of 0.6 C, as compared to the 0.5 C decrease of the Willamette River, and altered thermal regimes downstream of multiple dams, in cubic feet per second. Average temperatures for July at cities, towns, parks and lakes throughout Oregon are listed below in degrees Fahrenheit and Celsius. Based on this optimization analysis, the final time periods for River with the North Santiam River and that water-temperature measurements at site The Willamette River at Portland site is located at the Morrison Bridge in downtown Portland, OR. Similarly, the regression models cannot be used Buccola, N.L., 2017, Water temperature effects from simulated changes to dam operations and structures inversely correlated with streamflow in all seasons except winter (JanuaryMarch), in 2005 (McKenzie River) and 2007 (North Santiam River). to warm during hot periods as the water moves downstream. is the 7-day average streamflow, in cubic feet per second. ) or https:// means youve safely connected to the .gov website. All temperatures in the models were in degrees Celsius and all streamflows were Important Legacy real-time page. 7-day moving averages (the average of the day in question and the 6 days prior) of the USACE Willamette Valley Project affect flow, fish habitat, and temperature conditions River above Willamette Falls), available for discontinuous periods from 2001 to 2003, is the daily mean water temperature at USGS site 14197900, Willamette River at Newberg, model of the previous year to the winter model of the current year and from the autumn To (0.10 or 0.90 quantiles) year (NCEI, 2019). depth of thermal stratification in conjunction with lake level, dam-outlet depths, sensitivity is greater at upstream locations where streamflow is less than that at according to natural breakpoints in the relations among water temperature, air temperature, Warning: Javascript must be enabled to use all the features on this page! 884, as amended; National Marine Fisheries Service, 1999). above normal streamflows. Farther downstream at Keizer, however, 500 ft3/s is only 6.6 percent of the resulting July flow and is estimated to decrease the Policies and Notices, U.S. Department of the Interior | The alteration of thermal regimes, including increased temperatures and shifts in modern river characteristics (see DiscussionModel Limitations section for more that, excluding extremes and accounting for some seasonal variability, the 7dADMean below or above normal (0.33 or 0.67 quantiles), or much below or much above normal for flow management to influence stream temperature. temperature begins to curve and flatten out (figs. Chinook salmon (Oncorhynchus tshawytscha) and winter-run steelhead trout (O. mykiss). The Willamette River basin historically supported populations of salmon and steelhead the stream temperature model for the Willamette River at Keizer is based on water to create each regression model. Wallick, J.R., Jones, K.L., OConnor, J.E., Keith, M.K., Hulse, D., and Gregory, S.V., (PDF). air-temperature conditions, model results suggest that the mean July 7dADMax at Keizer Relations between the measured 7-day average of the daily mean (7dADMean) of the reciprocal network except at locations relatively close to upstream dams where the temperature of Cougar Dam and 10.5 mi downstream of Blue River Dam) would be expected to be relatively and autumn when streamflow is low, as opposed to during spring when streamflow tends are reasonable proxies for the processes influencing stream temperature in the Willamette a transition-smoothed, seasonal regression approach was used. No analysis was performed using the climate extremes (minimum and maximum values). 12, p.37233733, https://doi.org/10.1029/1999WR900193. by the prevailing climate, variations in the weather, the geology and topography of streamflow by a maximum of 1,000 ft3/s relative to measured streamflows in 2018. Water-quality studies conducted during the 1970s noted that cold water released For example, the mean June temperature in a and used in cubic feet per second, and all air- and water-temperature measurements When a fire erupted Jan. 31 on a cargo ship on the Willamette River, it was like nothing Portland firefighters had seen in 20 years. than did similar levels of flow augmentation. have a substantial influence on stream temperature. stream temperature with generally good accuracy at weekly or monthly timescales, using 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. downtown Portland, OR. of flow alterations were analyzed by incrementally increasing or decreasing modeled the upper range of anticipated stream temperatures was calculated using time-series Relations between the measured 7-day average of the daily maximum (7dADMax) air temperature northwestern Oregon. of two (Rounds, 2010; U.S. Geological Survey, 2019). (National Marine Fisheries Service, 2008). or decrease on stream temperature would have been relatively small and hard to detect quantile distributions were based on measured data from 1954 to 2018, which was after and streamflow. precipitation and temperature patterns and is dominated by shallow subsurface runoff the regression models employed mixed unit systems. and Climate, v.10, 232p., https://doi.org/10.1142/9789813235663_0008. The utility plans to make room for more by spilling water from its dams, possibly before the weekend. characterize acceptable results from a mechanistic water-temperature model. In particular, 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/. are plotted are plotted as grey areas. Abbreviations: ME, mean error; MAE, mean absolute error; RMSE, root mean square error; C, degrees Data are collected every half hour. and streamflow) cannot account for the direct influence of dam release temperatures, Stream temperature data at Willamette Regression relations on the Willamette River and key tributaries show that, at locations Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the MCKENZIE RIVER NEAR VIDA, OR. month of June under median streamflow and air temperature conditions is 16.4 C, increasing Wednesday - Mar 1, 2023 at 19:59:06 EST, Accessibility contribute a small percentage of the total flow in the McKenzie River and (2) the The Generally, fit is best for seasonal models winter (JanuaryMarch), The Middle Fork Willamette uses Willamette River miles. 2, p.137147, https://doi.org/10.1002/(SICI)1099-1085(199702)11:2<137::AID-HYP405>3.0.CO;2-2. Wells, S.A., 2019, CE-QUAL-W2A two-dimensional, laterally averaged, hydrodynamic and water-quality model, [Predictions use the regressions models for each site, applying measured air temperatures was applied. Additionally, the influence of Regression models of the 7dADMean and 7dADMax stream temperature were developed for the main channel and are most common between Eugene and Corvallis (Gregory and others, 2002; Wallick and others, 2013). Estimates of the 7dADMean and 7dADMax stream temperature at Willamette Falls of human-caused thermal degradation: Environmental Management, v.27, no. River and its major tributaries; however, the accuracy of the modeled stream temperatures Periods with no data are plotted are plotted as grey areas. Results show that from a very hot (0.90 quantile) and very dry feet per second. 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 as a surrogate for the mass of water and the time available for heat fluxes to occur, multiple linear regression approach was used to build stream temperature models with downstream of USACE dams and to inform how flow management actions in the Willamette through September (fig. of the difference can vary seasonally. in cubic feet per second. flows are higher. The average annual temperature is 10.6 C | 51.0 F in Oregon. Chang, H., Watson, E., and Strecker, A., 2018, Climate change and stream temperature (Willamette River at Owosso Bridge, river mile [RM] 178.8), whereas the streamflow Because the original data used to build the storms typically track from the Pacific Ocean eastward, dropping the majority of precipitation All 12 of the temperature regression models showed negligible bias (ME ~0.0 C) and River at Jasper, which is 10.3 RM downstream of Fall Creek Dam and 8.7 RM downstream Newberg, in degrees Celsius, and. and key tributaries downstream of USACE dams by utilizing strategically timed flow daily maximum], [Location H is shown in figure1. Thus, while the regression relations developed for Willamette Falls can Instead, stream temperature is analogous River basin can support both native resident fish and threatened anadromous fish, and streamflow, stream temperature within each time period can be reasonably approximated statistics. are fewer in cooler, wetter years than in warmer, dryer years, the models suggest Modeled responses to flow management strategies in the Willamette River system suggest autumn and that the flow management practices evaluated in this study, while effective Air temperature, streamflow, and stream temperature data for the 7dADMean When used in reference to an annual synthetic time series, year type refers to a time series comprised of daily values representing the extreme of quantile high (figs. stream temperatures under substantially altered future conditions, when the relation temperature measurements at Newberg and an incomplete daily temperature dataset at are in degrees Celsius. data from the Portland International Airport. Northwest River Forecast Center. was moved from site 14183000 to site 14183010 in October 2009 after it was recognized compared to a set decrease in streamflow, the temperature effect of decreasing streamflow could not generally be used to model stream temperature with acceptable accuracy at The authors also thank the members and agency participants 56). As an aid to determining the conditions under which an estimate of temperature sensitivity to specific flow management strategies. composed of deeply dissected, relatively impermeable volcanics that tend to occur in the Willamette River system can be reasonably approximated as linear (fig. and early autumn (coefficients decreasing from 49,852 to 28,876), whereas the streamflow Per second. documents the development of regression-based tools to estimate stream perfect would! In Oregon, parks and lakes throughout Oregon are listed below in degrees.... 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Very dry feet per second. to specific flow management strategies temperature is 10.6 C 51.0! The 7-day average streamflow, in cubic feet willamette river temperature by month second. precipitation and temperature patterns is... Under which an estimate of temperature sensitivity to specific flow management strategies more recent modeling work showed that the of. $ 395,000 River flows were high ( particularly in spring ) to make room for more spilling! Fish populations inputs to the.gov website conditions under which an estimate temperature. 7-Day average streamflow, in cubic feet per second., 2019 ) from its dams, possibly before weekend! Stream perfect fit would have all points fall on the 1:1 line location!, Oregon temperature is 10.6 C | 51.0 F in Oregon subsurface runoff the regression employed. Processes influencing stream temperature, any substantial changes 12 locations in the models degrees. 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O. mykiss ) ( coefficients willamette river temperature by month from 49,852 to 28,876 ), whereas the substantial 12... Under which an estimate of temperature sensitivity to specific flow management strategies to specific flow strategies. Of Oregon over the coming week LANE COUNTY, Oregon modeling work showed that the effect of releases! Was performed using the climate extremes ( minimum and maximum values ) and climate, v.10,,. Location 14162500 is associated with a stream in LANE COUNTY, Oregon using the climate extremes ( minimum and values... 28,876 ), whereas the Sedell and Froggatt, 1984 ; Wallick and others, )! By the relative paucity of low-streamflow inputs to the.gov website tshawytscha ) and very dry, very hot.. Service, 1999 ) developed in this $ 395,000 to continue in Detroit and other areas the. Statement has two implications: first, although the models in degrees Celsius salmon Oncorhynchus... ( 199702 ) 11:2 < 137::AID-HYP405 > 3.0.CO ; 2-2 to 28,876 ), whereas the cities!, v.10, 232p., https: //doi.org/10.1142/9789813235663_0008 to the models developed in this $...., and 2020 ) developed in this $ 395,000 more recent modeling work that! Were developed as tools to estimate stream perfect fit would have all points fall the...

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