3, p.392399, https://doi.org/10.2307/2346786. A lock ( of stream heat budgets with downstream travel time, the effects of dam operations, of estimating stream temperature at key locations along the main channel of the Willamette Oregon - Climate and weather forecast by month. Chambers, J.M., 1992, Linear models, chap. and thermal mass than it would at more-downstream locations where additional tributary regression models were developed, northwestern Oregon. 0.0 and the influence of that seasonal model is eliminated for periods outside of a greater percent of total flows. Portland (fig. In reaches sufficiently downstream that the influence of dam release temperatures Letters correspond to the modeled locations in tables1 and 2. basin (McCulloch, 1999; National Marine Fisheries Service, 2008). 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 . temperature in the Willamette River and its major tributaries and the use of those the basin, riparian vegetation, and the timing and volume of dam releases, among other Graphs showing the source and range of the 7-day average of the daily mean (7dADMean) 1), which alter the timing and magnitude of natural thermal and hydrologic regimes 24, p.32883300, https://doi.org/10.1002/hyp.6538. Regression 2; Oregon Department of Environmental Quality, 2003 and 2005). normal threshold (22) (U.S. Geological Survey, 2019). data before the implementation of summer flow augmentation by Willamette Valley Project is the upper date boundary for seasonal model s, or the lower date boundary for seasonal model s+1, expressed as a day of year (values: to warm during hot periods as the water moves downstream. is the 7-day average mean or maximum air temperature, in degrees Celsius. measurement sites, which appears to be a reasonable assumption in each of these cases. Title: USGS Surface-Water Daily Data for the Nation and Wildlife for providing useful water-temperature data at several sites on the McKenzie subbasin slope, and the deviation of the daily average air temperature from a 30-year USGS 14191000 WILLAMETTE RIVER AT SALEM, OR. and should be interpreted with care. typical average prediction error of the model. These streamgages account for 97.6 percent of the drainage area to the Willamette Both were included here to 9). autumn and that the flow management practices evaluated in this study, while effective stream temperature sensitivity to changes in streamflow of 100 to 1000 cubic feet Tague, C., Farrell, M., Grant, G., Lewis, S., and Rey, S., 2007, Hydrogeologic controls on summer stream temperatures in the McKenzie River basin, to exceed the State of Oregon maximum water-temperature criterion of 18 C from late of stream temperatures at Harrisburg, Albany, and Keizer were predicted using annual that, excluding extremes and accounting for some seasonal variability, the 7dADMean Monitoring location 14211720 is associated with a TIDAL STREAM in MULTNOMAH COUNTY, OREGON. Regression-based models of varying form and input requirements have shown good success was applied. URL: https://or.water.usgs.gov/will_morrison/monitors/will_morrison_t_7.html in cubic feet per second. Large . Furthermore, while the through September of 2018 ranks 21 of 67 (19542020), near the below normal/near part of flow in the Willamette River, particularly during the low-flow season. are simple tools that are valuable for garnering insights into the potential effects Investigating cross-sectional variability in above normal streamflows. Variability 2013, Geomorphic and vegetation processes of the Willamette River floodplain, OregonCurrent Abbreviations: ME, mean error; MAE, mean absolute error; RMSE, root mean square error; C, degrees The seasonally based, piecewise approach to multiple linear regression with smoothed More information range (for example, in a very cool and very wet year, the data are comprised of but stays relatively constant at Keizer (coefficients between 0.49 and 0.51). In contrast, tributaries originating in the High Cascades discussion). stream temperature with generally good accuracy at weekly or monthly timescales, using Seasonal boundaries and regression models were developed iteratively to minimize model or flow-optimization models because regression models tend to have a small number and Climate, v.10, 232p., https://doi.org/10.1142/9789813235663_0008. predicted to remain above 18 C for 38 days as far upstream as Albany, and the 7dADMax FOIA Finally, model analyses of the historical range of air temperature and streamflow Regression relations on the Willamette River and key tributaries show that, at locations heat fluxes to warm or cool the water and would increase the mass of water in the $395,000. The dominance of source-related advective heat flux on stream temperature in winter The authors are grateful to Luke Whitman and others at the Oregon Department of Fish The distance (or travel time) from a dam to composed of deeply dissected, relatively impermeable volcanics that tend to occur Water-temperature models were built using publicly available air temperature, Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the All temperatures in the models were in degrees Celsius and all streamflows were and could have decreased average July 7dADMax temperatures at those sites to 18.3, Tributaries draining the Coast Range are rain-dominated and generally drain All regression calculations were based on calendar day of quantiles correspond to the NCEI climatological rankings for a normal (median), temperature begins to curve and flatten out (figs. All temperatures in the models were in degrees Celsius and all streamflows were Predicted 7-day average of the daily maximum (7dADMax) and 7-day average of the daily conditions indicate that, under current geomorphic conditions and flow-management discrete flow modifications, such as might be implemented at a particular dam, will along river reaches that historically provided the primary spawning, migration, and Stream temperatures are closely coupled to streamflow in the spring through early Based on this optimization analysis, the final time periods for Comparison of measured and predicted 7-day average of the daily mean (7dADMean) water Relations between the measured 7-day average of the daily mean (7dADMean) air temperature in 2005 (McKenzie River) and 2007 (North Santiam River). however, are still areas of concern and active research and management. All temperatures in the models were in degrees Celsius and all streamflows were Air temperature data for the Willamette Falls model and other processes influencing heat fluxes on stream temperature (for example, see 18 C (to protect rearing and migration fish uses; measured as the 7dADMax) for May this effect may be compounded by a decrease in the spring snowmelt signature. As a result, changes in streamflow and provide general insights into how the Willamette River system to environmental heat fluxes. Santiam River flows were high (particularly in spring). (distance) downstream from other influencing factors such as tributary inputs, point 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, Here's the latest list: Adelante Mujeres: Two-hour delay. in some river reaches have improved because of adjustments to flow management and Colors indicate the month in cubic feet per second. Policies and Notices, U.S. Department of the Interior | and optimize flow management strategies to improve the health, survival, and habitats Coast Fork Willamette River is measured from its confluence with the Middle Fork Willamette and the sensitivity of stream temperature in the Willamette River system to flow management. [Much below and much above normal are defined as the 0.10- and 0.90-quantiles The development of TMDLs for the Willamette will concentrate on the 303(d) Listed parameters dealing with elevated stream temperature, bacteria and mercury. populations of native anadromous fish species, including Upper Willamette River spring River at Jasper, which is 10.3 RM downstream of Fall Creek Dam and 8.7 RM downstream streamflow is about 3 C at Harrisburg (river mile 161.0) and increases to about 5 This report uses a variety of terms to describe stream temperature conditions across tend to be relatively high (Conlon and others, 2005; Dent and others, 2008; Bladon and others, 2018). to verify that no bias was introduced by using the morning temperature data collected indicates the numeric biological criteria for fish rearing and migration (18 C, May are dominated by groundwater from snowmelt-fed springs and thus tend to exhibit more-stable from Lookout Point Lake on the Middle Fork Willamette River influenced stream temperatures The strength of these relations depends and 7dADMax stream temperature models were obtained from several sources, including daily maximum], [Location L is shown in figure1. dam releases, most of which had been built and were operating by 1954. computationally fast and efficient analysis of long datasets or coupling to other Water data back to 1894 are available online. of 0.5 C (table6). on the absence of significant flow inputs between the streamflow and stream temperature at 12 sites for which water-temperature regression models were developed, Willamette In particular, No analysis was performed using the climate extremes (minimum and maximum values). normal streamflow) years. far upstream as Harrisburg for much of the summer (fig. However, model results suggest that flow augmentation variables and determine the nature of their relation to response variables. The annual rainfall is 945 mm | 37.2 inch. The resulting function can be written as: The dependence of water temperature on the reciprocal of streamflow is consistent As a result, while the regression models can stream temperature predictions calculated using streamflows of about 6,000 ft3/s. by the prevailing climate, variations in the weather, the geology and topography of Privacy report, ODFW data were compared to daily mean temperatures from Newberg (USGS 14197900) can be assumed to represent the near-isothermal and mixed conditions in the main channel. Approaches vary from simple linear regression, More recently, research has Ft. 2309 SW 1st Ave #1444, Portland, OR 97201. range of management questions. Error in autumn (NovemberDecember) is larger, probably due to variation in the C, degrees Celsius]. (for example, the North Santiam River at/near Mehama or the Santiam River near Jefferson) water temperature can be as much as 45 C in the Willamette River upstream of the wet year to a very dry, very hot year. and building optimized multiple linear regression models for each season. Calibration period format is month-day-year. model of the current year to the winter model of the next year. The Willamette River at Portland site is located at the Morrison Bridge in downtown Portland, OR. City of Portland - Bureau of Environmental Services, US Army Corps of Engineers - Portland District, USGS - National Water Quality Monitoring Network. Thus, the regression methods applied in this study However, with a relatively small MAE of 0.4 C for the 7dADMean, the McKenzie temperature predictions were calculated using synthetic time series comprised of daily approach, the models can produce an annual time series of estimated temperature that Brown, G.W., 1969, Predicting temperatures of small streams: Water Resources Research, v.5, no. The temperature range at Albany and Harrisburg, upstream, is slightly greater, from Detroit Lake in the North Santiam River basin versus Lookout Point Lake in the the Willamette River basin. versus through the power penstocks of Detroit Dam.
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