Calibration and validation of linked water temperature models for the Shasta Reservoir and the Sacramento River from 2000 to 2015.

Daniels, Miles E.; Sridharan, Vamsi K.; Danner, Eric M.; John, Sara N.

doi:10.7289/v5/tm-swfsc-597

Cited by 3 publications

(7 citation statements)

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“…We estimated the ability (on a daily mean scale) of discharge-mediated temperature management in the Sacramento River throughout the entire year using a region-specific model called RAFT (Daniels et al, 2018;Pike et al, 2013). RAFT simulates temperature dynamics in a one-dimensional direction longitudinally downstream, while averaging across the depth and lateral sections of a river channel.…”

Section: Water Temperature Modelmentioning

confidence: 99%

“…Here we identify and quantify the relationship between reservoir discharge and downstream water temperatures in a large, managed river using a process-based model of river temperature (RAFT; Pike et al, 2013;Daniels et al, 2018). This was done for the Sacramento River by modeling water temperatures over the historical record (1990-2020) of model forcings and only perturbing reservoir discharge levels on a daily time step.…”

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confidence: 99%

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Discharge‐Mediated Temperature Management in a Large, Regulated River, With Implications for Management of Endangered Fish

Michel,

Daniels,

Danner

2023

Water Resources Research

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For large, regulated rivers, operators can impact abiotic conditions for the benefit of the ecosystem, primarily by controlling the volume of discharge from upstream reservoirs. Understanding the decision space around discharge is necessary for evaluating tradeoffs between environmental and other objectives. As a result of climate change, warming water temperatures are increasingly becoming a concern for thermally‐sensitive fauna. In California’s largest river, the Sacramento, extinction risk of salmon populations is linked to high water temperatures. Yet, little is known about how much water temperature in lower reaches can be affected by reservoir discharge operations, and the potential benefits to salmon. We used a process‐based water temperature model to estimate the ability of reservoir discharge to mediate river temperature heating processes impacting downstream locations (discharge‐mediated temperature management). To bound this analysis, we used historical forcings over a recent 29‐year span. Results indicate reservoir discharge increases of up to 340cms over the historical record could have decreased water temperature in the lower reaches by up to 3.6ºC. Salmon require water below 20ºC during most stages of their lifecycle, and we found that normative water operations could ensure 20ºC was rarely exceeded for two potential management seasons, in late‐spring and early‐fall. These periods coincide with important rearing and migratory periods for salmon, during which they frequently experience excessive temperatures under the management status‐quo. This analysis provides stakeholders tools to manage conditions for native fauna in the face of a warming climate, and a framework for developing similar tools in other large, regulated rivers.

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Section: Water Temperature Modelmentioning

confidence: 99%

mentioning

confidence: 99%

Discharge‐Mediated Temperature Management in a Large, Regulated River, With Implications for Management of Endangered Fish

Michel,

Daniels,

Danner

2023

Water Resources Research

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“…Levels of engagement range from unidirectional participatory facilitation such as (1) outreach to collect data on impairment, local practices, and needs (Eakin et al, 2017;Ponce-Romero et al, 2017), and (2) education about water quality management plans and tools designed for personal and community contribution to the program (e.g., De Freitas et al, 2013;Sun et al, 2015;Daniels et al, 2018;Yusuf et al, 2018;Quinn & Oster, 2021), to fully bi-directional participation such as (3) modeler-led engagement (e.g., Swick, 2007;Estalaki et al, 2016;Criollo et al, 2019;Alamanos et al, 2021;Balestrini et al, 2021), and (4) stakeholder-led engagement (e.g., Petherick 2014; Hadj-Hammou et al 2017;Vaneeckhaute et al 2021). The methodologies associated with these approaches are described in Section 3.2.…”

Section: Leveraging Gis and Remote Sensing Data And Toolsmentioning

confidence: 99%

“…Recently, modelers and nodal agencies such as the California Central Valley Region State Water Resources Control board (Quinn & Oster, 2021) and the National Marine Fisheries Service (Daniels et al, 2018) have developed online portals through which model-generated basin-scale water quality information can be viewed in innovative ways as well as downloaded for interested stakeholders to understand the system better. In the case of the River Assessment and Forecasting Tool for water temperature in the Sacramento River (Daniels et al, 2018), historic water temperature hindcasts and periodically updated forecasts in the Sacramento River can be viewed in multiple graphical formats such as on a spatio-temporal grid, as a snapshot in time across space, or as multiple timeseries. It can also be downloaded by water operations managers to better manage reservoir and water operations to aid in multipurpose water use in the system.…”

Section: Outreach and Educationmentioning

confidence: 99%

“…These approaches have traditionally included some form of stakeholder outreach such as through public comment periods, or through web-based interactive tools, which result in the one-way transfer of information about the physical and environmental water quality processes and management actions (Estelaki et al, 2016). Alternately, participatory modeling has involved presenting stakeholders with alternate model scenarios (Estalaki et al, 2016), or has engaged them through web data portals (e.g., Daniels et al, 2018;Quinn & Oster, 2021;USGS, 2022), workshops or serious games (e.g., Mayer et al, 2001). The more immersive engagement experiences can also result in bi-directional information exchange and deeper cognitive development among stakeholders, as well as improve group cognition of complex processes and management actions.…”

Section: Potential For Transforming Stakeholder Engagementmentioning

confidence: 99%

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Applications of GIS and remote sensing in public participation and stakeholder engagement for watershed management

Quinn¹,

Sridharan²,

Ramírez-Ávila³

et al. 2022

SESMO

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The use of Geographic Information Systems (GIS) and remote sensing technologies for the development of water quality management programs and for post-implementation assessments has increased dramatically in the past decade. This increase in adoption has been made more accessible through the interfaces of many popular software tools used in the regulation and assessment of water quality. Customized applications of these tools will increase, as ease of access and affordability of directly monitored and remotely sensed datasets improve over time. Concurrently, there is a need for inclusive participatory engagement with stakeholders to achieve solutions to current watershed management challenges. This paper explores the potential of these GIS and remote sensing datasets, tools, models, and immersive engagement technologies from other domains, for improving public participation and stakeholder engagement throughout the watershed planning process. To do so, an initial review is presented about the use of GIS and remote sensing in watershed management and its role in impairment identification, model development, and planning and implementation. Then, ways in which GIS and remote sensing can be integrated with stakeholder engagement through (1) leveraging GIS and remote sensing datasets, and (2) stakeholder engagement approaches including outreach and education, modeler-led development, and stakeholder-led involvement and feedback, are discussed. Finally, future perspectives on the potential for transforming public participation and stakeholder engagement in the watershed management process through applications of GIS and remote sensing are presented.

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Estimating spatial–temporal differences in Chinook salmon outmigration survival with habitat- and predation-related covariates

Henderson

Iglesias

Michel

et al. 2019

Can. J. Fish. Aquat. Sci.

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Low survival rates of Chinook salmon (Oncorhynchus tshawytscha) smolts in California’s Central Valley have been attributed to multiple biological and physical factors, but it is not clear which factors have the largest impact. We used 5 years of acoustic telemetry data for 1709 late-fall Chinook salmon smolts to evaluate the effect of habitat- and predation-related covariates on outmigration survival through the Sacramento River. Using a Cormack–Jolly–Seber mark–recapture model, we estimated survival rates both as a function of covariates (covariate model) and as a function of river location and release year (spatial–temporal model). Our covariate model was overwhelmingly supported as the preferred model based on model selection criteria, suggesting the covariates adequately replicated spatial and temporal patterns in smolt survival. The covariates in the selected model included individual fish covariates, habitat-specific covariates, and temporally variable physical conditions. The most important covariate affecting salmon survival was flow. We describe the importance of these parameters in the context of juvenile salmon predation risk and suggest that additional research on predator distribution and density could improve model estimates.

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Calibration and validation of linked water temperature models for the Shasta Reservoir and the Sacramento River from 2000 to 2015.

Cited by 3 publications

References 0 publications

Discharge‐Mediated Temperature Management in a Large, Regulated River, With Implications for Management of Endangered Fish

Discharge‐Mediated Temperature Management in a Large, Regulated River, With Implications for Management of Endangered Fish

Applications of GIS and remote sensing in public participation and stakeholder engagement for watershed management

Estimating spatial–temporal differences in Chinook salmon outmigration survival with habitat- and predation-related covariates

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