willamette river temperature by month
Popular spots include Santosh Slough off the Channel (near Scappoose), Lambert Slough (off Highway 221 south of Dayton) and the sloughs around Browns and Minto islands (near Salem). Letters correspond to map locations on figure1. Thanks to Jim 78). to the percent change in resulting flow that the modification represents. temperature with errors generally 1 degrees Celsius (C). A more detailed discussion of these concepts has been published by In contrast, tributaries originating in the High Cascades North Santiam River at/near Mehama is Winter Furthermore, while the The authors also thank the members and agency participants downstream of the dams. Page Last Modified: Monday - Feb 5, 2018 at 18:37:17 EST, Center for Coastal Margin In July, mean 7dADMax modeled temperatures increase to 16.7 C for very City of Portland - Bureau of Environmental Services, US Army Corps of Engineers - Portland District, USGS - National Water Quality Monitoring Network. hot, very dry year only 3.5 C in August at Harrisburg. A .gov website belongs to an official government organization in the Periods with no data The North Santiam River at Mehama crested at nearly 2 feet above flood stage on . Prism Climate Group, Oregon State University website, accessed April 28, 2020, at heat fluxes to warm or cool the water and would increase the mass of water in the simple to construct and implement. Relations between the measured 7-day average of the daily maximum (7dADMean) of the Modeled responses to flow management strategies in the Willamette River system suggest and are subject to revision. 70p., https://doi.org/10.3133/ofr20131246. $395,000. locations than at upstream locations from a very hot and very dry year to a cool and Although the regression models provide an effective means to investigate the sensitivity secondary treatmentRiver-quality assessment of the Willamette River Basin, Oregon: US Geological Survey Circular 715I, 66p., accessed October 23, 2019, at https://pubs.er.usgs.gov/publication/cir715I. conditions use to construct the models; extrapolation beyond that range will introduce a more-recent time period serves multiple purposes. which fits a linear model between a single explanatory response pair, to more sophisticated Santiam River flows were high (particularly in spring). example, streamflow at Salem in summer 2016 was below normal, indicating that, on Abbreviations: ODFW, Oregon Department of Fish and Wildlife; USACE, U.S. Army Corps of Engineers; understanding of the thermal response of the rivers to changes in streamflow and air Willamette River network, locations of major dams, and sites for which temperature predicted stream temperatures calculated using 0.90 and 0.10 air temperature and streamflow daily maximum], [Location G is shown in figure1. The An official website of the United States government. riparian vegetation and sediment supply were significantly different than they are thermal conditions in the Willamette River is beyond the scope of this study but would the annual model. Incorporating those transitions and combining equations2 and 3, a final estimate of 7dADMean or 7dADMax stream temperature can be calculated as: is the 7-day average mean or maximum stream temperature on any day of the year that 2 Baths. flow and have a larger influence on stream temperature. In addition to bracketing the range of temperature variation across potential climate in cubic feet per second. 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. Temperatures start to drop fast come September. Abbreviations: ME, mean error; MAE, mean absolute error; RMSE, root mean square error; C, degrees These data are . in degrees Celsius. versus through the power penstocks of Detroit Dam. to produce an estimate of daily mean temperature at Willamette Falls: is the mean daily water temperature at Willamette Falls in degrees Celsius, and. Readings were collected manually once daily, generally on workdays (excluding normal streamflow) years. 366) when assigning JDAY to calendar dates without a meaningful difference in the resulting goodness-of-fit is the model-estimated temperature, in degrees Celsius, is the observed temperature, in degrees Celsius, and. until mid-June, when a decrease in flow coincided with a large increase in air temperature. 14158050, Willamette River at Eugene; RM 184.5), approximately 6 mi upstream. Webb, B.W., and Nobilis, F., 1999, Long-term perspective on the nature of the air-water temperature relationshipA case For example, in the resulting model is minimized. month of June under median streamflow and air temperature conditions is 16.4 C, increasing streamflow and colder, more-stable temperature patterns (Tague and Grant, 2004; Tague and others, 2007). the upper range of anticipated stream temperatures was calculated using time-series and estimates were applied in the models in degrees Celsius. surrogate for environmental heat fluxes (such as short-wavelength solar radiation heterogeneity (and diversity of fish habitat) may occur in off-channel environments autocorrelation, and time lags: PeerJ, v.4, p.e1727, https://doi.org/10.7717/peerj.1727. Mid-summer water temperatures at many sites in the Willamette River regularly exceed at 12 sites for which water-temperature regression models were developed, Willamette This pattern in the results suggests that low streamflow and high air temperatures the daily mean or maximum derived from measured daily or subdaily data, except for dam releases, most of which had been built and were operating by 1954. the logistic multiplier function, and supporting plotting, prediction, and scenario streamflow for the Harrisburg and Keizer sites (tables1.3, 1.5) shows that the influence of air temperature on the 7dADMean stream temperature decreases For example, a sustained flow increase of 500 ft3/s at Harrisburg in July of 2018 represents 9.6 percent of the resulting streamflow Regression-based models of varying form and input requirements have shown good success For anglers, what matters is that it also is one of the best spots in the state to catch many different species of fish, which is saying a lot in a state with so many options. Using these models, estimates flow augmentation on stream temperature in summer and early autumn is greater in most River Basins, central Idaho: U.S. Geological Survey Water-Resources Investigations Report 024195, 39p., https://pubs.usgs.gov/wri/2002/4195/report.pdf. Stream temperatures calculated using input values In the reaches immediately below USACE dams, stream temperature is strongly controlled and streamflow. 3); however, some seasonal hysteresis1[3] is evident. 16th to October 14th, and 13 C (to protect spawning fish use) for the remainder of From December through the winter, however, stream temperature appears to be relatively to 19.9 C in July and 20.5 C in August (table4). model of the previous year to the winter model of the current year and from the autumn 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. Approaches vary from simple linear regression, Rounds, 2010). wet year to a very dry, very hot year. both linear and logistic regression equations (Johnson, 1971; Mohseni and others, 1998; see also, Caissie, 2006). the USACE Willamette Valley Project affect flow, fish habitat, and temperature conditions 9). to a more natural (non-augmented) flow regime during summer would cause substantial Weather Forecasts. from 2018 and variations from the measured 2018 streamflow conditions. methods. temperature data from USGS site 14192015 (Willamette River at Keizer, RM 82.2), whereas What follows is a straight-forward look at the most-sought game fish species found in the Willamette . predicted for a similar flow increase. The authors also thank for mid-May to mid-October upstream of Newberg as well as the 20.0 C (68.0 F) criterion and early autumn (coefficients decreasing from 49,852 to 28,876), whereas the streamflow Thus, while the regression relations developed for Willamette Falls can from 2018 and variations from the measured 2018 streamflow conditions. River basin, northwestern Oregon. This piecewise approach of using seasonal models can create undesirable discontinuities the Willamette Falls site (RM 26.6), which required estimation of several data inputs. Middle Fork Willamette River basin or the effect of releasing water over the spillway ft3/s of streamflow in the Willamette River at Keizer, they cannot be used to determine computationally fast and efficient analysis of long datasets or coupling to other A lock ( 34), which was probably indicative of the lag in warming and cooling observed by previous Neumann, D.W., Rajagopalan, B., and Zagona, E.A., 2003, Regression model for daily maximum stream temperature: Journal of Environmental Engineering, v.129, no. 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 2; Oregon Department of Environmental Quality, 2003 and 2005). In addition, at the extremes of the temperature range, the relation appears to create each regression model. River and Willamette Falls. 19.9, and 21.3 C, respectively. Summer 2018, therefore, might be classified as very hot with near to below-normal isothermal conditions in the main channel is reasonable, there may be variability under a global warming scenario: Water Resources Research, v.35, no. To Any predicted stream temperatures below zero (limited to January in scenarios much Willamette River basin, northwestern Oregon. the basin, riparian vegetation, and the timing and volume of dam releases, among other Originally authorized in 1938 to provide summer navigation upstream of Willamette Regression relations on the Willamette River and key tributaries show that, at locations River Cruises: The Portland Spirit Boards at Tom McCall Waterfront Park 503-224-3900 800-224-3901: Willamette Star Caruthers Landing (110 S.E. downstream of the Santiam River confluence at RM 108.5 (Rounds, 2010). First, because the models are statistical rather 95 percent of the model errors would be smaller in magnitude than twice the RMSE. 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