Opportunity Information: Apply for W81EWF 23 SOI 0005
The grant opportunity titled "Modeling relationships of hydromorphology, nutrient dynamics, and algal production in backwaters of the Lower Mississippi River" is a research-focused cooperative agreement sponsored by the U.S. Department of Defense through the Engineer Research and Development Center (ERDC). It is framed around a practical water-quality problem tied to one of the most important river systems in the United States: while the Mississippi River generally provides water that can be treated to drinking-water standards using conventional municipal processes, the river also transports and accumulates nutrients that can drive serious ecological and operational issues. The central concern is that excess nutrients can fuel algal and cyanobacterial growth, particularly in slower-moving or semi-isolated backwater areas that are still hydrologically connected to the main river channel, and that nutrient-laden river discharge contributes to the well-known seasonal hypoxic "dead zone" in the Gulf of Mexico.
The project focus is on understanding and predicting how physical habitat structure and flow conditions (hydromorphology) interact with nutrient cycling (nutrient dynamics) and biological response (algal production) within Lower Mississippi River backwaters such as lakes, ponds, and wetlands linked to the river. Backwaters behave differently than the main channel because they often have reduced flow velocities, longer water residence times, different sedimentation patterns, and distinct mixing and temperature regimes. Those conditions can increase the opportunity for nutrients to be retained, transformed, or recycled, which in turn can either amplify algal blooms locally or, if managed correctly, potentially reduce nutrient export downstream. ERDC notes that there is ongoing interest from its Water Quality and Engineering Research Team and other stakeholders in learning how these dynamic processes operate, and especially whether they can be influenced to remove or sequester nutrients before they contribute to downstream impacts.
A key motivation behind the opportunity is also risk management for river engineering and restoration actions. The notice points out concerns that projects designed to address other needs (for example, navigation, flood risk reduction, habitat restoration, or sediment management) could unintentionally increase algal blooms by altering hydrology, connectivity, or nutrient retention patterns in backwaters. This makes the modeling emphasis important: the goal is not just to describe conditions, but to build or apply models that link physical changes in the river-backwater system to nutrient behavior and algal outcomes, allowing managers to anticipate tradeoffs and design interventions that minimize water-quality side effects.
Administratively, this is a discretionary funding opportunity using a cooperative agreement mechanism, indicating that the government expects to have substantial involvement during the project rather than acting solely as a pass-through funder. The activity category is Science and Technology / Research and Development, and it is listed under CFDA number 12.630. The opportunity number is W81EWF 23 SOI 0005. The posting date is April 12, 2023, with an original closing date of June 11, 2023. Funding is relatively small and targeted, with an award ceiling of $40,000 and an expectation of a single award. Eligibility is listed broadly as "Others" with additional eligibility details referenced in the full announcement, which typically implies that nontraditional applicants may be allowed but should confirm requirements in the eligibility section.
In practical terms, the opportunity is aimed at producing research outputs that clarify cause-and-effect relationships in Lower Mississippi backwaters: how variations in connectivity to the mainstem, bathymetry, channel geometry, flow exchange, and sediment processes influence nutrient concentrations and transformations, and how those nutrient patterns translate into algal or cyanobacterial production. The intended value of the work is decision support: improving the ability to predict when and where blooms are likely, understanding how backwaters contribute to or mitigate nutrient delivery downstream, and informing whether and how these environments can be leveraged to retain nutrients in ways that improve overall water quality without creating new localized bloom problems.Apply for W81EWF 23 SOI 0005
- The Department of Defense, Engineer Research and Development Center in the science and technology and other research and development sector is offering a public funding opportunity titled "Modeling relationships of hydromorphology, nutrient dynamics, and algal production in backwaters of the Lower Mississippi River" and is now available to receive applicants.
- Interested and eligible applicants and submit their applications by referencing the CFDA number(s): 12.630.
- This funding opportunity was created on Apr 12, 2023.
- Applicants must submit their applications by Jun 11, 2023. (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 $40,000.00 in funding.
- The number of recipients for this funding is limited to 1 candidate(s).
- Eligible applicants include: Others (see text field entitled Additional Information on Eligibility for clarification).
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Frequently Asked Questions (FAQs)
What is the title of this grant opportunity?
The opportunity is titled "Modeling relationships of hydromorphology, nutrient dynamics, and algal production in backwaters of the Lower Mississippi River."
Which agency is sponsoring this opportunity?
This is a U.S. Department of Defense opportunity sponsored through the Engineer Research and Development Center (ERDC).
What type of funding mechanism is being used?
The notice describes this as a cooperative agreement. That typically means the government expects to be substantially involved in the project during the period of performance, rather than acting only as a pass-through funder.
Is this a research grant or an implementation/construction grant?
It is research-focused. The activity category is listed as Science and Technology / Research and Development.
What practical problem is this research trying to address?
The focus is a water-quality problem tied to nutrient transport and accumulation in the Mississippi River system. Excess nutrients can fuel algal and cyanobacterial growth, especially in slower-moving or semi-isolated backwaters that remain connected to the main river. Nutrient-laden discharge is also linked to the seasonal hypoxic "dead zone" in the Gulf of Mexico.
What are "backwaters" in the context of this opportunity?
Backwaters are lakes, ponds, wetlands, and similar areas that are linked to the Lower Mississippi River but behave differently from the main channel. They can have reduced flow velocities, longer water residence times, different sedimentation patterns, and distinct mixing and temperature regimes.
Why are backwaters important for nutrient and algae dynamics?
Because backwaters often have slower flow and longer residence times, they can create conditions where nutrients are retained, transformed, or recycled. Those processes can increase the likelihood of local algal or cyanobacterial blooms, or (if managed correctly) potentially reduce nutrient export downstream.
What is the main scientific focus of the proposed work?
The work is aimed at understanding and predicting how hydromorphology (physical habitat structure and flow conditions) interacts with nutrient dynamics (nutrient cycling and transformations) and algal production (biological response) in Lower Mississippi River backwaters.
What does "hydromorphology" mean in this opportunity?
In this notice, hydromorphology refers to physical and hydraulic characteristics such as connectivity to the main channel, bathymetry, channel geometry, flow exchange, and related sediment processes that shape how water moves and how habitat is structured in backwaters.
What does "nutrient dynamics" refer to here?
Nutrient dynamics refers to how nutrients are retained, transformed, recycled, and transported within backwaters, including the role of sedimentation and other physical processes that can influence nutrient concentrations and availability.
What is meant by "algal production" in the notice?
Algal production refers to the biological response to nutrient and physical conditions, including the growth potential of algae and cyanobacteria, particularly in backwater environments that may be more prone to blooms.
What kinds of relationships is the project expected to model?
The opportunity emphasizes modeling cause-and-effect linkages between (1) physical changes in the river-backwater system (for example, hydrology, connectivity, geometry, sediment processes), (2) resulting nutrient behavior (concentrations and transformations), and (3) algal or cyanobacterial outcomes (production and bloom likelihood).
Why is modeling emphasized rather than just monitoring or description?
The stated intent is decision support. Modeling is highlighted to help predict when and where blooms are likely, understand tradeoffs, and anticipate how changes to hydrology or connectivity might affect nutrient retention and algal outcomes before actions are taken.
How does this relate to navigation, flood risk reduction, habitat restoration, or sediment management projects?
The notice flags a risk-management concern: engineering and restoration actions designed for other purposes could unintentionally increase algal blooms by altering hydrology, connectivity, or nutrient retention patterns in backwaters. The modeling goal is to help anticipate and minimize those unintended water-quality side effects.
What geographic area is the project focused on?
The focus is on backwaters of the Lower Mississippi River.
What kinds of backwater environments are specifically mentioned?
The notice mentions lakes, ponds, and wetlands linked to the river.
What are examples of physical factors the work may consider?
Examples named in the notice include connectivity to the mainstem, bathymetry, channel geometry, flow exchange, and sediment processes, along with flow velocity and water residence time differences between backwaters and the main channel.
What are the expected outputs or outcomes of the project?
The intended value is improved decision support: clearer cause-and-effect understanding, better prediction of bloom timing and locations, insight into whether backwaters contribute to or mitigate downstream nutrient delivery, and information on whether these environments can be leveraged to retain nutrients without creating localized bloom problems.
Who is interested in the results of this research?
ERDC notes interest from its Water Quality and Engineering Research Team and other stakeholders in understanding these processes and whether they can be influenced to remove or sequester nutrients before they contribute to downstream impacts.
What is the maximum award amount (award ceiling)?
The award ceiling listed is $40,000.
How many awards are expected?
The opportunity indicates an expectation of a single award.
Is this a large, multi-year funding opportunity?
The notice describes the funding as relatively small and targeted, with a $40,000 award ceiling and a single expected award.
What is the opportunity number?
The opportunity number is W81EWF 23 SOI 0005.
What is the CFDA number associated with this opportunity?
The CFDA number listed is 12.630.
When was this opportunity posted?
The posting date is April 12, 2023.
What was the original closing date?
The original closing date is June 11, 2023.
Who is eligible to apply?
Eligibility is listed broadly as "Others," with additional eligibility details referenced in the full announcement. That typically suggests nontraditional applicants may be allowed, but applicants should confirm the specific requirements in the eligibility section of the full notice.
Does the notice mention how the work could help reduce downstream impacts like the Gulf of Mexico dead zone?
Yes. The notice ties nutrient-laden discharge to the seasonal hypoxic "dead zone" in the Gulf of Mexico, and it describes interest in whether backwaters can be influenced to remove or sequester nutrients before they contribute to downstream impacts.
Does the notice suggest that backwaters can be part of the solution as well as part of the problem?
Yes. It notes that backwater conditions can amplify local blooms, but also indicates that, if managed correctly, backwaters may potentially reduce nutrient export downstream through retention, transformation, or sequestration processes.
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