Opportunity Information: Apply for 22 540
The National Science Foundation (NSF) Hydrologic Sciences (HS) program is a research grant opportunity within NSF's Division of Earth Sciences that supports fundamental, discipline-based hydrology research focused on continental water processes across all spatial and temporal scales. The program is aimed at improving core scientific understanding of how water moves, is stored, and interacts with Earth systems on and beneath the land surface. Projects supported by HS typically address the physical, chemical, and biological roles of water in the environment, including how water shapes landscapes, sustains ecosystems, and influences the movement of materials through watersheds.
A central emphasis of the opportunity is advancing knowledge of hydrologic processes and fluxes. This includes studies of rainfall and runoff generation, infiltration into soils, subsurface and groundwater flow, evaporation and plant transpiration, and the exchange of water among soils, aquifers, streams, and the atmosphere. The program also supports research on hydrologic transport, such as how flowing water carries dissolved chemicals, nutrients, contaminants, sediment, and other materials. Many HS projects look at how hydrologic behavior couples with other systems, for example linking hydrology with ecosystem function, biogeochemical cycling, food and energy systems, and broader socio-ecological dynamics. Another major theme is hydrologic response to change, including changes driven by land use and land cover shifts, climate variability and change, and human activities such as watershed and water resource management.
NSF encourages a wide range of scientific approaches under this program. Proposals may be observational (field measurements, monitoring networks, remote sensing), experimental (laboratory or field experiments), theoretical (process theory, conceptual frameworks), or modeling-based (numerical simulation, statistical and data-driven models), and many competitive projects integrate multiple methods. The overall goal is not applied engineering or routine monitoring, but rather the kind of basic research that produces transferable insight, generalizable theory, and improved predictive understanding of hydrologic systems.
From an administrative standpoint, this is a discretionary NSF grant program (Funding Opportunity Number 22-540; CFDA 47.050) with proposals accepted at any time, rather than a single annual deadline. The typical maximum award amount listed is up to $1,000,000, and NSF anticipates making roughly 30 awards. Eligibility is listed as "Others" with additional clarification provided by NSF in the full eligibility text, which generally means applicants should check the solicitation details carefully to confirm whether their institution type and status are allowed.Apply for 22 540
- The National Science Foundation in the science and technology and other research and development sector is offering a public funding opportunity titled "Hydrologic Sciences (HS)" and is now available to receive applicants.
- Interested and eligible applicants and submit their applications by referencing the CFDA number(s): 47.050.
- This funding opportunity was created on Dec 23, 2021.
- Applicants must submit their applications by Proposals accepted anytime. (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 $1,000,000.00 in funding.
- The number of recipients for this funding is limited to 30 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 NSF Hydrologic Sciences (HS) program?
The NSF Hydrologic Sciences (HS) program is a research grant opportunity within the National Science Foundation's Division of Earth Sciences. It supports fundamental, discipline-based hydrology research focused on continental water processes across all spatial and temporal scales.
What is the main scientific focus of this opportunity?
The central focus is improving core scientific understanding of how water moves, is stored, and interacts with Earth systems on and beneath the land surface. The program emphasizes advancing knowledge of hydrologic processes and fluxes and how hydrologic behavior links with other Earth and environmental systems.
What types of water processes are included in HS-funded research?
HS commonly supports studies of rainfall and runoff generation, infiltration into soils, subsurface and groundwater flow, evaporation and plant transpiration, and exchanges of water among soils, aquifers, streams, and the atmosphere.
Does the HS program support research on transport of materials in water?
Yes. The program supports research on hydrologic transport, including how flowing water carries dissolved chemicals, nutrients, contaminants, sediment, and other materials through watersheds.
What does NSF mean by "continental water processes" in this program?
Based on the opportunity description, the HS program targets water processes on and beneath the land surface (for example, soils, aquifers, streams, and exchanges with the atmosphere) across a wide range of spatial and temporal scales.
How does HS view interdisciplinary or coupled-systems research?
The program notes that many projects examine coupling between hydrologic behavior and other systems. Examples described include links between hydrology and ecosystem function, biogeochemical cycling, food and energy systems, and broader socio-ecological dynamics.
Does the program support research on hydrologic response to change?
Yes. A major theme is hydrologic response to change, including changes driven by land use and land cover shifts, climate variability and change, and human activities such as watershed and water resource management.
What scientific approaches are encouraged for proposals?
NSF encourages a wide range of approaches, including observational work (field measurements, monitoring networks, remote sensing), experimental studies (laboratory or field experiments), theoretical work (process theory, conceptual frameworks), and modeling-based research (numerical simulation, statistical and data-driven models). Many competitive projects integrate multiple methods.
Is this program intended for applied engineering or routine monitoring?
No. The stated goal is not applied engineering or routine monitoring. Instead, HS emphasizes basic research that produces transferable insight, generalizable theory, and improved predictive understanding of hydrologic systems.
Where within NSF is the HS program located?
The HS program is within NSF's Division of Earth Sciences.
What is the Funding Opportunity Number for this program?
The Funding Opportunity Number listed is 22-540.
What CFDA number is associated with this opportunity?
The CFDA number provided is 47.050.
Is this a discretionary grant program?
Yes. The opportunity is described as a discretionary NSF grant program.
When are proposals due?
Proposals are accepted at any time rather than being limited to a single annual deadline.
What is the typical maximum award amount?
The typical maximum award amount listed is up to $1,000,000.
How many awards does NSF anticipate making under this opportunity?
NSF anticipates making roughly 30 awards.
Who is eligible to apply?
Eligibility is listed as "Others," with additional clarification indicated as being available in the full eligibility text. Applicants are expected to check the solicitation details carefully to confirm whether their institution type and status are allowed.
Does the HS program cover research across different scales?
Yes. The opportunity explicitly states that it supports research across all spatial and temporal scales.
What kinds of outcomes is NSF looking for from HS research?
Based on the description, NSF is looking for basic research outcomes that yield transferable insight, generalizable theory, and improved predictive understanding of hydrologic systems, especially regarding hydrologic processes, fluxes, transport, coupling, and response to change.
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