Water temperature effects from simulated changes to dam operations and structures in the Middle and South Santiam Rivers, Oregon

Buccola, Norman L.

doi:10.3133/ofr20171063

Cited by 6 publications

(15 citation statements)

References 2 publications

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“…That study demonstrated that releasing warm surface water from Green Peter Lake in summer was effective at producing more-natural seasonal temperatures in the dam releases. The current study extends the efforts of Buccola (2017) to provide additional insights and guidance regarding how operations at Green Peter and Foster Dams affect water temperature in Foster Lake and in the South Santiam River downstream of Foster Dam, and how the dams can be operated to produce more optimum water temperatures to support fish requirements.…”

Section: Survey (Usgs) Hydrologists In Developing An Updated Greenmentioning

confidence: 76%

“…The USGS model of Green Peter and Foster Lakes was used to run scenarios that examined the effects of possible operational and structural changes at Green Peter and Foster Dams on water temperature (Buccola, 2017). That study demonstrated that releasing warm surface water from Green Peter Lake in summer was effective at producing more-natural seasonal temperatures in the dam releases.…”

Section: Survey (Usgs) Hydrologists In Developing An Updated Greenmentioning

confidence: 99%

“…The third dimension, from bank to bank (lateral), is well mixed and is not simulated by the model. CE-QUAL-W2 is capable of simulating water level, velocity, flow, temperature, and many aspects of water quality in lakes, reservoirs, rivers, and estuarine systems Wells, 2015 and2017).…”

Section: Calibrated Ce-qual-w2 Modelmentioning

confidence: 99%

“…Dam outlets simulated by the original USGS model (Buccola and others, 2013) included the existing Foster Dam spillway and power penstock, and the Green Peter Dam power penstock and regulating outlet. Buccola (2017) added the Green Peter Dam spillway to the model for scenario testing. Additional outlets and releases were added to the model as part of this study, as described in the "Model Updates" section of this report.…”

Section: Calibrated Ce-qual-w2 Modelmentioning

confidence: 99%

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Modeling water temperature response to dam operations and water management in Green Peter and Foster Lakes and the South Santiam River, Oregon

Sullivan¹,

Rounds²

2021

Scientific Investigations Report

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Temperature in degrees Celsius (°C) may be converted to degrees Fahrenheit (°F) as follows: °F = (1.8 × °C) + 32. vi DatumsVertical coordinate information is referenced to the National Geodetic Vertical Datum of 1929 (NGVD29).Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83).Elevation, as used in this report, refers to distance above the vertical datum. AbbreviationsCE-QUAL-W2 two-dimensional hydrodynamic and water-quality model FOS Foster Lake GPR Green Peter Lake USACE U.S. Army Corps of Engineers USGS U.S. Geological Survey • Downstream of Foster Dam in the South Santiam River, the effects of different dam operations on water temperature decreased with increasing distance downstream, mainly because of increased importance of environmental heat fluxes across the water surface and because of inputs from unregulated tributaries. These factors also increased the daily variability in water temperature in the South Santiam River downstream of Foster Dam. With elapsed time and greater distance downstream of Foster Dam, the South Santiam River becomes less influenced by release temperatures at Foster Dam.

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Section: Survey (Usgs) Hydrologists In Developing An Updated Greenmentioning

confidence: 76%

Section: Survey (Usgs) Hydrologists In Developing An Updated Greenmentioning

confidence: 99%

Section: Calibrated Ce-qual-w2 Modelmentioning

confidence: 99%

Section: Calibrated Ce-qual-w2 Modelmentioning

confidence: 99%

See 2 more Smart Citations

Modeling water temperature response to dam operations and water management in Green Peter and Foster Lakes and the South Santiam River, Oregon

Sullivan¹,

Rounds²

2021

Scientific Investigations Report

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“…These models generally include those reservoirs located on tributaries that historically supported large populations of anadromous fish, are relatively large, and can or may be managed to control the temperature of water releases. USGS has subsequently used the river models and other reservoir models to investigate a variety of management questions (for example, Buccola and others, 2015;Buccola and others, 2016;Buccola, 2017;Rounds and Stratton Garvin, 2022;. However, the river and reservoir models had not been fully linked to allow simulation of WVP-wide management scenarios and their effects on downstream river reaches across the USACE-regulated Willamette River Basin.…”

Section: Introductionmentioning

confidence: 99%

Updates to CE-QUAL-W2 models for select U.S. Army Corps of Engineers reservoirs in the Willamette Valley Project and an inter-reservoir reach of the Middle Fork Willamette River, northwestern Oregon

Stratton Garvin,

Buccola,

Rounds

2023

Scientific Investigations Report

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Updates to CE-QUAL-W2 Models for Select U.S. Army Corps of Engineers Reservoirs in Northwestern OregonAs part of the model updates described in this report, some model parameters were adjusted to improve stability or decrease model error, and boundary conditions including meteorological, hydrologic, and temperature inputs were developed and updated for model years 2011, 2015, and 2016, as necessary. In some cases, the data sources used to drive previous model versions were no longer available, which required the development and checking of new data sources or estimation techniques. Goodness-of-fit statistics for outflow from the dams and in simulated river reaches generally show a good model fit, with the models simulating subdaily water temperatures at most comparable locations with a mean absolute error of generally less than 1 degree Celsius (°C) and a reasonably low bias. Model simulation of the thermal vertical profiles in each reservoir also produced an overall mean absolute error of generally less than 1 °C for all 3 years, with the exception of the Hills Creek Lake Model and the Cougar Reservoir Model in years when the reservoirs did not fill (2015 and 2016). Both of these models have known calibration issues and tend to be sensitive to the choice of certain structural parameters in the model. Overall, the calibration process was focused on obtaining model settings that led to realistic water temperature predictions in all 3 years (2011, 2015, and 2016) without over-calibrating specifically to any single year. A complete investigation of model error for these reservoir submodels was beyond the scope of this investigation but could be undertaken in the future if better model performance for these two reservoirs is desired.

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Updates to models of streamflow and water temperature for 2011, 2015, and 2016 in rivers of the Willamette River Basin, Oregon

Stratton Garvin,

Rounds,

Buccola

2022

Open-File Report

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and 2016 from about day-ofyear (JDAY; after 'Julian day') 80 to JDAY 305, or about March 20/21 to October 31 or November 1, depending on leap years. Because these models were thoroughly documented as part of their initial development, documentation of model parameters in this report is limited to any changes in the models themselves, documentation of boundary condition data and estimates for the years modeled, and goodness-of-fit checks *

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Water temperature effects from simulated changes to dam operations and structures in the Middle and South Santiam Rivers, Oregon

Cited by 6 publications

References 2 publications

Modeling water temperature response to dam operations and water management in Green Peter and Foster Lakes and the South Santiam River, Oregon

Modeling water temperature response to dam operations and water management in Green Peter and Foster Lakes and the South Santiam River, Oregon

Updates to CE-QUAL-W2 models for select U.S. Army Corps of Engineers reservoirs in the Willamette Valley Project and an inter-reservoir reach of the Middle Fork Willamette River, northwestern Oregon

Updates to models of streamflow and water temperature for 2011, 2015, and 2016 in rivers of the Willamette River Basin, Oregon

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