Hydrologic Sciences

Funding Agency:
National Science Foundation

The Hydrologic Sciences Program focuses on the fluxes of water in the environment that constitute the water cycle as well as the mass and energy transport function of the water cycle. The Program supports the study of processes from rainfall to runoff to infiltration and streamflow; evaporation and transpiration; the flow of water in soils and aquifers; and the transport of suspended, dissolved, and colloidal components. The Hydrologic Sciences Program retains a strong focus on linking fluxes of water and the components carried by water across boundaries between various interacting facets of the terrestrial system and the mechanisms by which these fluxes co-organize over a variety of timescales and/or alter fundamentals of water cycle interactions within the terrestrial system. The Program is also interested in how water interacts with the landscape and the ecosystem as well as how the water cycle and its coupled processes are altered by land use and climate. Studies may address physical, chemical, and biological processes that are coupled directly to water transport. Projects submitted to Hydrologic Sciences commonly involve expertise from basic sciences, engineering and mathematics; and proposals may require joint review with related programs. The Hydrologic Sciences Program will also consider synthesis projects.

Henceforth, investigators can submit proposals to the Program at any time. Proposals submitted to other program solicitations, such as CAREER or EAR Post-Doctoral Fellowships, should continue to meet their respective deadlines.

Agency Website

Amount Description

Estimated program budget, number of awards, and average award size/duration are subject to the availability of funds and the quality of the proposals. Regular research awards supported by HS are generally, but not exclusively, in the range of $250,000 to $700,000 and of 2-4 years duration. Hydrologic process synthesis proposals should be at a level appropriate to the Project scope and are expected to be conducted at total levels of <$1,000,000 over 3-5 years with an emphasis on support of graduate students and postdocs.

Funding Type





Engineering and Physical Sciences
Environmental & Life Sciences