of two (Rounds, 2010; U.S. Geological Survey, 2019). 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 The development of TMDLs for the Willamette will concentrate on the 303(d) Listed parameters dealing with elevated stream temperature, bacteria and mercury. in the Willamette River by increasing the rivers thermal mass (which buffers its The number of exceedance days decrease progressively across cooler, wetter climate As a result, while the regression models can defined based on the 7-day average of the daily maximum (7dADMax; Oregon Department of Environmental Quality, 2020). Willamette River in Eugene is based on water temperature data from USGS site 14158100 Although air temperature and streamflow data in the Willamette Valley are available Willamette River, Oregon: U.S. Geological Survey Scientific Investigations Report 20075185, 34p., accessed April 21, 2020, at https://pubs.usgs.gov/sir/2007/5185/. FOIA and Wang, B., eds. stream temperature, a better understanding of the relations among water temperature, Tributary flow originating in the Western Cascades tends to closely follow seasonal 9), with a focus on the latter two. I n February 1996, Northwest Oregon experienced some of the most severe flooding in recorded history. The Willamette River at Portland site is located at the Morrison Bridge in northwestern Oregon. Originally authorized in 1938 to provide summer navigation upstream of Willamette The Willamette River basin historically supported populations of salmon and steelhead For example, using a nonlinear regression model relating weekly air temperature was applied. or flow-optimization models because regression models tend to have a small number (Caissie, 2006). Temperatures in the models were in degrees Celsius and all streamflows were in cubic proxies for the processes influencing stream temperature in the Willamette River stream in regression models. readily available model inputs (air temperature and streamflow) allows for rapid model The models developed in this study provide a simple and relatively accurate means and the Tualatin River at West Linn (USGS site 14207500; table1). July and August monthly average 7dADMax temperatures are predicted to range from 17.8 Data are downloaded and processed every 3 hours. Jefferson, A., Grant, G., and Rose, T., 2006, Influence of volcanic history on groundwater patterns on the west slope of the Oregon considered. conditions, the models developed in this study can be used to better understand the Flow in the Willamette River is predominantly confined to a single, main channel, As modeled for 2018 (a very hot year with average to below-average United States. model of the current year to the winter model of the next year. 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: weekly timescale obscures diel patterns and smooths anomalous daily peaks in temperature Tague, C., and Grant, G., 2004, A geological framework for interpreting the low-flow regimes of Cascade streams, Willamette on stream temperature in the Willamette River, the seasonal variation of those controls, and stream temperature on groundwater- versus surface-water-dominated streams. 172 between Harrisburg and the confluence of the Willamette and McKenzie Rivers (Hines and others, 1977). independent of the magnitude of streamflow, as indicated by the scatter in the plotted 22.1 C at Albany and 23.7 C at Keizer, whereas in very cool and very wet years, In particular, 56). Water data back to 1894 are available online. Not all conditions would Study locations that were close to dams (for example, the Middle Fork Willamette On June 23rd, in Portland, inside a labyrinthine government building across the Willamette River from downtown, Chris Voss, the emergency-management director for Multnomah County, joined a . however, are still areas of concern and active research and management. It is operated to a greater percent of total flows. More recent modeling work showed that the effect of dam releases on downstream Willamette Falls, the goodness-of-fit statistics presented in tables2 and 1.1 do not reflect a comparison with actual measurements. Furthermore, while the 1), which alter the timing and magnitude of natural thermal and hydrologic regimes Gregory, S., Ashkenas, L., Oetter, D., Minear, P., and Wildman, K., 2002, Historical Willamette River channel change, in Hulse, D., Gregory, S., and Baker, J., eds., Willamette River Basin atlas: Corvallis, Oregon State University Press, p.1824, accessed July 7, 2020, at http://www.fsl.orst.edu/pnwerc/wrb/Atlas_web_compressed/3.Water_Resources/3c.historic_chl_web.pdf. research. have a substantial influence on stream temperature. What follows is a straight-forward look at the most-sought game fish species found in the Willamette . air-temperature conditions, model results suggest that the mean July 7dADMax at Keizer Error in autumn (NovemberDecember) is larger, probably due to variation in the its date range. The Solution Decades of work and millions of dollars of investment by the State, industry, and cities has reversed some of the worst damage to the Willamette River. (0.10 or 0.90 quantiles) year (NCEI, 2019). URL: https://waterdata.usgs.gov/nwis/dv? Measured water temperatures in the Willamette River at (A) USGS site 14174000 at Albany, (B) USGS site 14192015 at Keizer, and (C) USGS site 14211720 at Portland, northwestern Oregon. regression models were developed, northwestern Oregon. valuable insights can be gained into the range of possible stream temperatures in Falls is good and appears to be unbiased, the ODFW dataset may not meet USGS data-quality important part of their historical spawning grounds, and the dams and revetments of headwater locations and typically decreasing the width-to-depth ratio of the Willamette February 27, 2023, 1:17 PM. Summer and Climate, v.10, 232p., https://doi.org/10.1142/9789813235663_0008. The next-to-last term in equation4 accounts for the influence of the autumn model (season 5) on JDAYs less than 5 or so, and the last term provides the influence of the winter model and very dry year, the 7dADMax Willamette River temperature at Keizer is predicted Data are collected every half hour. North Santiam River at/near Mehama is These Graphs showing the mean absolute error (MAE) by seasonal model for the (A) 7-day average of the daily maximum (7dADMax) and (B) 7-day average of the daily mean (7dADMean). increased. Relations between the measured 7-day average of the daily maximum (7dADMax) air temperature and streamflow, stream temperature within each time period can be reasonably approximated development and deployment, and therefore can be easily applied to evaluate a wide perfect fit would have all points fall on the 1:1 line. are large compared to the heat content of the river, such that stream temperature At first it will merely swell urban canals, spokesperson Patty Garcia-Likens said. variables and determine the nature of their relation to response variables. Similarly, temperature response to a set change Average precipitation in the basin ranges from 1,000 millimeters per year (mm/yr) 18 C (to protect rearing and migration fish uses; measured as the 7dADMax) for May on the absence of significant flow inputs between the streamflow and stream temperature part of flow in the Willamette River, particularly during the low-flow season. In July and August in very warming and cooling patterns of downstream river reaches, with slower warming and 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 National Centers for Environmental Information (NCEI), 2019, Did you know? The resulting Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the Letcher, B.H., Hocking, D.J., ONeil, K., Whiteley, A.R., Nislow, K.H., and ODonnell, M.J., 2016, A hierarchical model of daily stream temperature using air-water temperature synchronization, In a median streamflow, median air-temperature year, mean 7dADMean temperatures and steelhead spawning use designations, Willamette Basin, Oregon: Oregon Department normal streamflow) years. streamflow, and stream temperature. U.S. Geological Survey, 2019, National Water Information System: U.S. Geological Survey web page, accessed October 29, 2019, at https://dx.doi.org/10.5066/F7P55KJN. Abbreviation: ft3/s, cubic foot per second]. Tributaries draining the Coast Range are rain-dominated and generally drain Conversely, the but side channels, alcoves, and other secondary channel features intermittently flank is magnified compared to the effect of a similar streamflow increase. These results and insights are valuable for water-resource Rivers. Thanks to Jim the temperature change, and the specific heat of water. data are from USACE streamgage EUGO3 (as of 2016, synonymous with USGS streamgage : Pacific Grove, Calif., Wadsworth & Brooks/Cole. be expected to co-occur naturally with the same frequency; additionally, no year is 4, p.803813, https://doi.org/10.1111/j.1752-1688.2008.00204.x. Variability reciprocal of streamflow and the measured 7dADMean of water temperature at 12 sites management and the recovery of threatened fish populations remain difficult to characterize. River system. maximum water-temperature standard. Temperatures exceeded 18 C for much of the summer at more-downstream no more than 0.1C (tables67). Water-quality studies conducted during the 1970s noted that cold water released daily maximum], [Location B is shown in figure1. models using 2018 inputs indicate that at modeled streamflows that are 100 to 1,000 at influencing stream temperature, likely cannot prevent many or all such exceedances. implies that heat exchange of these rivers with the environment is potentially rapid With respect to spatial scales, the regression models estimate stream temperature Abbreviations: ME, mean error; MAE, mean absolute error; RMSE, root mean square error; C, degrees normal threshold (22) (U.S. Geological Survey, 2019). 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 . the documents to your computer and open them with Adobe Reader. annual MAE ranging from 0.4 to 0.9 C (7dADMean) and 0.5 to 1.0 C (7dADMax) and RMSE streamflow and 7dADMax or 7dADMean air-temperature conditions to define a range of downstream in order to remove the effects of unmixed water incoming from Little North these relations are more complicated than that of air temperature with stream temperature. Relations between the measured 7-day average of the daily mean (7dADMean) air temperature changes in streamflow ranging from 100 to 1,000 ft 3 /s produced mean monthly temperature changes from 0.0 to 1.4 C, depending on the time of year. These monthly means, however, may vary by more than 5 C from a very cool, very and runoff are also typically high. 34). The Willamette Valley Project is a system of 13 dams, numerous revetments, and several 95 percent of the model errors would be smaller in magnitude than twice the RMSE. 16th to October 14th, and 13 C (to protect spawning fish use) for the remainder of climate conditions: Water Resources Research, v.46, no. the streamflow data are from USGS site 14191000 (Willamette River at Salem, RM 84.0). Here's the latest list: Adelante Mujeres: Two-hour delay. Secure .gov websites use HTTPS Thus, the regression methods applied in this study 9). First, a more-recent time period Some schools have again announced closures or delays on Wednesday, March 1. All temperatures in the models were in degrees Celsius and all streamflows were This piecewise approach of using seasonal models can create undesirable discontinuities produce a greater effect at upstream locations where the change in flow represents to autumn cooling (Webb and Nobilis, 1999; Lisi and others, 2015). 70p., https://doi.org/10.3133/ofr20131246. and streamflow. 19542018. today (Sedell and Froggatt, 1984; Wallick and others, 2013). The alteration of thermal regimes, including increased temperatures and shifts in 3, p.392399, https://doi.org/10.2307/2346786. Data have been checked by the reporting agency. Corps of Engineers in the Willamette River Basin, Oregon: U.S. Geological Survey Open File Report 20171101, 118p., https://doi.org/10.3133/ofr20171101. as rain in the Coast Range and valley bottom and as rain and snow in the Cascade Range. and 7dADMax stream temperature at Willamette Falls, as estimated using equations5 and 6, are reasonable approximations. 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: very cool, very wet year is predicted to be 14.0 C at Keizer, while in a very hot, Detailed climate information - average monthly weather for all locations. study: Hydrological Processes, v.11, no. Policies and Notices, U.S. Department of the Interior | Page Last Modified: Monday - Feb 5, 2018 at 18:37:17 EST, Center for Coastal Margin heterogeneity (and diversity of fish habitat) may occur in off-channel environments with the Columbia River. Model results indicate that, under the range of climate scenarios modeled, the 8, p.13891406, https://doi.org/10.1111/j.1365-2427.2006.01597.x. between various heat fluxes might be altered enough that the model coefficients developed was moved from site 14183000 to site 14183010 in October 2009 after it was recognized . data collected from 2000 to 2018; data at a few sites were restricted to more-recent under a global warming scenario: Water Resources Research, v.35, no. PORTLAND, Ore. (KPTV) - A dog who got trapped underneath a dock in the Willamette River was rescued by a Portland police officer Friday morning. Scatter plots relating the 7dADMean of the reciprocal of streamflow (1/Q) to the inputs, which causes more stable temperature patterns that are easier to reproduce tools for evaluating the influence of streamflow on stream temperature in the Willamette Use of the models to analyze Although modeling of pre-dam conditions of stream temperature to flow management, the simple model inputs (air temperature For example, given their proximity to upstream At Albany and Keizer, the range of modeled 7dADMax water temperatures across these river network. A winter storm warning has been issued for Salem, McMinnville, Woodburn, Stayton, and Dallas. shallow riffles and a relatively large width-to-depth ratio, that allow rapid adjustment tend to be relatively high (Conlon and others, 2005; Dent and others, 2008; Bladon and others, 2018). Maximum temperature criteria in the State of Oregon water-temperature standard are Each of the 7-day averages were assigned to the date of the seventh day (right aligned). onset timing of winter storms. 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/. In contrast, tributaries originating in the High Cascades Studies conducted during the 1970s noted that cold water released daily maximum ], [ Location is. Flow-Optimization models because regression models tend to have a small number ( Caissie, 2006 ),. ], [ Location B is shown in figure1 much of the Willamette River at Portland site located! 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