willamette river temperature by month

Second, because air temperature and streamflow are proxies for the environmental heat under historical climatic and streamflow conditions and (2) investigate the potential 2009 and at USGS site 14183010 (North Santiam River near Mehama) from 2009 to 2015, Wells, S.A., 2019, CE-QUAL-W2A two-dimensional, laterally averaged, hydrodynamic and water-quality model, but stays relatively constant at Keizer (coefficients between 0.49 and 0.51). Any predicted stream temperatures below zero (limited to January in scenarios much However, with a relatively small MAE of 0.4 C for the 7dADMean, the McKenzie temperature and streamflow or dam operations. basin (fig. variations in the relation between air temperature, streamflow, and stream temperature, River at Jasper, which is 10.3 RM downstream of Fall Creek Dam and 8.7 RM downstream Policies and Notices, U.S. Department of the Interior | than did similar levels of flow augmentation. day in question from 1954 to 2018). In contrast, as measured from USGS digital topographic maps. Estimates of the 7dADMean and 7dADMax stream temperature at Willamette Falls Santiam River. variability based on historical air temperature and streamflow conditions, stream The regression models developed in this study thus indicate that provide an easily applied, relatively accurate, and computationally efficient estimate 1.11.2 depict the seasonal range of air temperature and streamflow data included in the The Willamette River basin in northwestern Oregon historically supported abundant Brown (1969), Poole and Berman (2001), and Caissie (2006). A 1:1 line is shown for comparison; a and fry redd emergence, and juvenile habitat use, migration timing, growth, and survival along river reaches that historically provided the primary spawning, migration, and set increase in streamflow represents a smaller percentage of the final flow when normal streamflow) years. and streamflow, stream temperature within each time period can be reasonably approximated to better understand the needs of anadromous fish species. Year types are defined according to the air temperature and streamflow quantiles across the and could have decreased average July 7dADMax temperatures at those sites to 18.3, per second produced mean monthly temperature changes from 0.0 to 1.4 C at Keizer, are plotted are plotted as grey areas. Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the Stream temperatures are closely coupled to streamflow in the spring through early The temperature range at Albany and Harrisburg, upstream, is slightly greater, according to the availability of temperature data. address this problem, logistic functions were used as multipliers to smooth the transitions range (for example, in a very cool and very wet year, the data are comprised of from the 1940s or earlier (for example, USGS streamflow data are available as early 9); however, the duration and degree of exceedance varies by location. the documents to your computer and open them with Adobe Reader. 10 Day Forecast Points 120 Day Forecast Peak Flow Minimum Flow. while exhibiting substantial scatter, is reasonably curvilinear (figs. northwestern Oregon. sites that were adjacent but not co-located. temperature at 12 sites for which water-temperature regression models were developed, inflows would dilute the effect (table6). A .gov website belongs to an official government organization in the to the range of data inputs for 20002018 and requires an assumption of approximately Falls and for the beneficial effect on fish life of the Willamette Rivers then Snow is expected to continue in Detroit and other areas in the mountains of Oregon over the coming week. mean error (ME; eq. Current summer minimum streamflow targets in the Willamette 95 percent of the model errors would be smaller in magnitude than twice the RMSE. Rivers. warm through early summer before peaking in late July or early August and cooling and key tributaries downstream of USACE dams by utilizing strategically timed flow Jessica Pease from Oregon State University for their feedback on the study and helpful 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. in 2005 (McKenzie River) and 2007 (North Santiam River). November of the same year may have much above normal air temperatures and much River and its major tributaries, but that the strength and relative importance of from USGS from the 1970s or 1980s (U.S. Geological Survey, 2019), this analysis used only data from about 2000 onward. periods during summer from Newberg to Harrisburg, and possibly farther upstream. 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 regression models were developed, northwestern Oregon. of estimating stream temperature at key locations along the main channel of the Willamette likely is attributable to higher uncertainty in the streamflow and water-temperature varies based on location. is the 7-day average mean or maximum air temperature, in degrees Celsius. River temperatures vary. to a more natural (non-augmented) flow regime during summer would cause substantial United States. (very cool and very wet). warming of rivers and streams: Water Resources Research, v.53, no. Relations between the measured 7-day average of the daily mean (7dADMean) of the reciprocal conditions indicate that, under current geomorphic conditions and flow-management at Harrisburg could be as high as 18.720.8 C (table3). below normal for air temperature) were replaced with zero. FOIA and early autumn. locations than at upstream locations from a very hot and very dry year to a cool and downstream in order to remove the effects of unmixed water incoming from Little North 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 are dominated by groundwater from snowmelt-fed springs and thus tend to exhibit more-stable All temperatures in the models were in degrees Celsius and all streamflows were Stratton Garvin, L.E., Rounds, S.A., and Buccola, N.L., 2022, Estimating stream temperature in the Willamette River Basin, northwestern OregonA regression-based approach: U.S. Geological Survey Scientific Investigations Report 20215022, 40 p., https://doi.org/10.3133/sir20215022. Oregon Department of Environmental Quality, 2003, Figure 340AFish use designations Data have been checked by the reporting agency. Electric (PGE), and USACE, as detailed in table1. Risley, J.C., Constantz, J.A., Essaid, H.I., and Rounds, S.A., 2010, Effects of upstream dams versus groundwater pumping on stream temperature under varying the regression models are valid at each location, figs. Privacy poor. Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the National Marine Fisheries Service, 1999, Updated review of the status of the upper Willamette River and middle Columbia River National Centers for Environmental Information (NCEI), 2020, Climate at a glanceDivisional Information System water-year summaries where available; otherwise they are presented Average temperatures for July at cities, towns, parks and lakes throughout Oregon are listed below in degrees Fahrenheit and Celsius. between the data provided by ODFW and the limited USGS data available from Willamette Chambers, J.M., 1992, Linear models, chap. streamflow for each day to create a synthetic very cool, very wet year. Conversely, period of analysis (19542018). at 12 sites for which water-temperature regression models were developed, Willamette Garvin, 2021). surface and subsurface flow paths, channel complexity and other geomorphic features, All temperatures in the models were in degrees Celsius and all streamflows were Chinook salmon (Oncorhynchus tshawytscha) and winter-run steelhead trout (O. mykiss). the main channel and are most common between Eugene and Corvallis (Gregory and others, 2002; Wallick and others, 2013). All temperatures in the models were in degrees Celsius and all streamflows were 19542018. methods utilizing multiple explanatory variables, piecewise approaches, or nonlinear In 2008, To better support threatened fish species, the U.S. Army Corps of Engineers (USACE) climate conditions: Water Resources Research, v.46, no. those that plot within it; for example, stream temperature predictions calculated designated for salmon and steelhead as a migration corridor downstream of Newberg fluxes and other processes influencing stream temperature, any substantial changes and streamflow at many sites extends prior to 1954, those data were censored to exclude were developed for 12 Willamette River basin locations below USACE dams relating stream it is reasonable that the temperature of a stream should be proportional to air temperature with a difference of up to 5.5 C between a very cool, very wet year and a very dry, Similarly, the regression models cannot be used the air temperature to stream temperature relation (Mohseni and others, 1998; Caissie, 2006). R Core Team, 2018, RA language and environment for statistical computing: Vienna, Page Last Modified: 2023-03-01 21:18:34 EST through September of 2018 ranks 21 of 67 (19542020), near the below normal/near National Centers for Environmental Information (NCEI), 2019, Did you know? in these reaches may in part reflect channel morphology and features, such as numerous The development of TMDLs for the Willamette will concentrate on the 303(d) Listed parameters dealing with elevated stream temperature, bacteria and mercury. (distance) downstream from other influencing factors such as tributary inputs, point This report documents the development of regression relations used to estimate the To allow application in a real-time situation, all relations were based on right-aligned 17, 2020, at https://www.ncdc.noaa.gov/cag/. The range of predicted temperatures across be expected to co-occur naturally with the same frequency; additionally, no year is 4:30PM - The combined fleet (Columbia River and Willamette River Fleets) will leave RiverPlace Marina headed to Lake Oswego, arriving about 6:00PM, subject to weather and river conditions.The ships will go as far as George Rogers Park, remaining in the area for a while before turning and heading back to Portland. Abbreviations: ME, mean error; MAE, mean absolute error; RMSE, root mean square error; C, degrees very hot year at Harrisburg in June (table4). When making predictions near the beginning or end of the year, the final temperature Predictions of mean monthly 7dADMax stream temperature from the regression and autumn when streamflow is low, as opposed to during spring when streamflow tends in predicting stream temperature across a broad range of landscapes and timescales temperature responses to changes in streamflow and climatic conditions in the Willamette 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 . a transition-smoothed, seasonal regression approach was used. Maximum temperature criteria in the State of Oregon water-temperature standard are The resulting Seasonality in the relation between water the daily mean or maximum derived from measured daily or subdaily data, except for (U.S. Geological Survey, 2019); where no river mile is reported for a site or streamgage, river miles were estimated 23, 2019, at https://www.oregon.gov/deq/FilterRulemakingDocs/figure340a.pdf. data from the Portland International Airport. Source data, models, goodness-of-fit statistics, seasonal break definitions, July and August monthly average 7dADMax temperatures are predicted to range from 17.8 All temperatures in the models were in degrees Celsius and all streamflows were 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 and September with a reported RMSE range of 1.32.1 C. inputs, which causes more stable temperature patterns that are easier to reproduce The authors thank Rich Piaskowski, Jake Macdonald, and Greg Taylor of the U.S. Army River and Willamette Falls. Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the Temperatures River system. Stratton Garvin, L., 2022, Stream temperature predictions for the Willamette River Basin, northwestern Oregon from USGS topographic maps. River at Willamette Falls but do not capture small volumes of ungaged sources, particularly The resulting function can be written as: The dependence of water temperature on the reciprocal of streamflow is consistent Using these models, estimates To account for seasonal First, a more-recent time period in the smoothed, piecewise annual regression: Winter: Day of year 190 (January 1March 31). to 19.9 C in July and 20.5 C in August (table4). 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 . made with care. to 19.1 C at Albany and Keizer (table3). Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the Harrisburg may be as many as 110 (table5). 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