Opportunity Information: Apply for G25AS00180
The US Geological Survey (USGS) is soliciting proposals for a cooperative agreement through the Great Basin Cooperative Ecosystem Studies Unit (CESU) to support research focused on how water moves from Bear River Bay (BRB) into Gilbert Bay within the Great Salt Lake (GSL) system. This opportunity is framed as applied science and technology research, with the goal of improving understanding and predictive capability around BRB outflow behavior under varying conditions. The award is intended for a CESU-affiliated partner and is limited to organizations that are already participating partners in the Great Basin CESU network.
The technical work is centered on building a detailed three-dimensional hydrodynamic model of the BRB outflow region. The project calls for a model that solves the full 3D Navier-Stokes equations, coupled with a salt transport equation. Salt is highlighted as the main driver of density differences in the system, which implies the modeling effort will need to capture density-driven circulation and mixing processes that influence how BRB water interacts with the more saline waters of Gilbert Bay. Turbulence is expected to be handled using a k-epsilon turbulence closure approach, a common method for representing turbulent mixing in environmental and engineering flows when direct turbulence resolution is not feasible.
On the numerical implementation side, the opportunity specifies use of the finite element method for spatial discretization, using prismatic elements in three dimensions, consistent with the approach described by Hervouet (2007). The USGS points applicants to the Telemac-3D solver, an open-source free-surface hydrodynamics model within the broader Telemac-Mascaret suite (opentelemac.org). In practical terms, this indicates the USGS expects the partner to work within (or closely compatible with) the Telemac-3D modeling framework to simulate free-surface flow and salt-driven density effects in a way that is reproducible and grounded in a widely used open modeling platform.
In addition to the physics-based numerical model, the partner is also expected to develop physics-informed, data-driven model(s) that can estimate flow at the BRB outflow. These models should be able to provide flow estimates across a range of conditions, but importantly only within the bounds of conditions represented by existing USGS measurements. This implies an emphasis on using observed data to train or constrain the data-driven components, while still respecting physical relationships (for example, through hybrid modeling, physically constrained machine learning, or empirical models structured around known hydrodynamic drivers). The intent appears to be producing practical flow-estimation tools that complement the more computationally intensive 3D simulations, especially for scenarios where rapid estimation is valuable.
Administratively, this is a discretionary funding opportunity issued by the USGS under the CESU program and will be made via a cooperative agreement, meaning the agency typically anticipates substantial involvement during the project rather than a hands-off grant relationship. The opportunity is listed under CFDA 15.808 and falls within the Science and Technology and other Research and Development activity category. The opportunity number is G25AS00180, with an original application closing date of 2025-01-13. The maximum funding amount (award ceiling) is $277,500. The listing indicates expected awards but does not provide a specific number in the provided text, suggesting applicants should be prepared for a competitive selection process with the possibility of a limited number of awards.Apply for G25AS00180
- The Geological Survey in the science and technology and other research and development sector is offering a public funding opportunity titled "Cooperative Agreement for affiliated Partner with Great Basin Cooperative Ecosystem Studies Unit (CESU)" and is now available to receive applicants.
- Interested and eligible applicants and submit their applications by referencing the CFDA number(s): 15.808.
- This funding opportunity was created on 2024-12-11.
- Applicants must submit their applications by 2025-01-13. (Agency may still review applications by suitable applicants for the remaining/unused allocated funding in 2026.)
- Each selected applicant is eligible to receive up to $277,500.00 in funding.
- Eligible applicants include: Others.
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Frequently Asked Questions (FAQs)
What agency is offering this funding opportunity?
The opportunity is offered by the U.S. Geological Survey (USGS).
What is the program or mechanism being used to make the award?
The award will be made as a cooperative agreement under the Cooperative Ecosystem Studies Units (CESU) program, specifically through the Great Basin CESU.
What does it mean that this is a cooperative agreement?
A cooperative agreement generally indicates that USGS expects substantial involvement during the project, rather than a fully hands-off relationship typical of some grants.
Who is eligible to apply?
Eligibility is limited to organizations that are already participating partners in the Great Basin CESU network (CESU-affiliated partners).
Is this opportunity open to non-CESU organizations?
No. The opportunity is intended for a CESU-affiliated partner and is limited to existing Great Basin CESU participating partners.
What is the focus area of the research?
The research focuses on how water moves from Bear River Bay (BRB) into Gilbert Bay within the Great Salt Lake (GSL) system, with an emphasis on understanding and predicting BRB outflow behavior under varying conditions.
How is USGS framing the work (basic research vs. applied work)?
The opportunity is framed as applied science and technology research intended to improve understanding and predictive capability related to BRB outflow behavior.
What is the main technical deliverable described in the opportunity?
The central technical effort is to build a detailed three-dimensional hydrodynamic model of the Bear River Bay outflow region.
What governing equations are expected to be solved in the 3D hydrodynamic model?
The model is expected to solve the full three-dimensional Navier-Stokes equations and be coupled with a salt transport equation.
Why is salt transport specifically emphasized?
Salt is identified as the main driver of density differences in the system, so the modeling must capture density-driven circulation and mixing as BRB water interacts with more saline waters in Gilbert Bay.
What turbulence approach is expected for the hydrodynamic model?
The opportunity specifies use of a k-epsilon turbulence closure approach to represent turbulent mixing processes.
What numerical method is specified for spatial discretization?
The opportunity specifies the finite element method for spatial discretization, using prismatic elements in three dimensions.
Is there a referenced methodological approach for the finite element/prismatic element implementation?
Yes. The opportunity references an approach consistent with Hervouet (2007).
Is a specific modeling platform recommended or expected?
USGS points applicants to Telemac-3D, an open-source free-surface hydrodynamics model within the Telemac-Mascaret suite (opentelemac.org), indicating an expectation that the work will be within (or closely compatible with) the Telemac-3D framework.
What type of hydrodynamics does the recommended solver support?
The referenced solver (Telemac-3D) is described as a free-surface hydrodynamics model, suitable for simulating free-surface flow and salt-driven density effects.
Beyond the physics-based 3D model, what additional modeling work is required?
In addition to the physics-based numerical model, the partner is expected to develop physics-informed, data-driven model(s) to estimate flow at the BRB outflow.
What are the data-driven model(s) expected to do?
They are expected to estimate flow at the BRB outflow across a range of conditions, serving as practical flow-estimation tools that complement the more computationally intensive 3D simulations.
Are there limits on the conditions the data-driven model(s) can be used for?
Yes. The data-driven model(s) should provide estimates only within the bounds of conditions represented by existing USGS measurements.
How should the data-driven approach relate to physics?
The opportunity calls for physics-informed, data-driven modeling, implying the approach should respect physical relationships while leveraging observed data (for example, through hybrid modeling, physically constrained machine learning, or empirically structured models based on known hydrodynamic drivers).
What is the CFDA number associated with this opportunity?
The opportunity is listed under CFDA 15.808.
What is the activity category for this funding opportunity?
It falls within the Science and Technology and other Research and Development activity category.
What is the opportunity number?
The opportunity number is G25AS00180.
What is the application closing date?
The original application closing date is 2025-01-13.
What is the maximum award amount (award ceiling)?
The maximum funding amount listed (award ceiling) is $277,500.
How many awards does USGS expect to make?
The listing indicates expected awards but does not provide a specific number in the provided information, so applicants should anticipate a competitive process with the possibility of a limited number of awards.
Does the opportunity specify that the work must be reproducible and grounded in an open modeling platform?
Yes. By pointing applicants to Telemac-3D (open-source) and describing expectations around implementation within or compatible with that framework, the opportunity signals an emphasis on reproducible modeling grounded in a widely used open platform.
What part of the Great Salt Lake system is the project focused on?
The focus is on the Bear River Bay (BRB) outflow region and the movement of water from BRB into Gilbert Bay within the Great Salt Lake (GSL) system.
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