Title 43Public LandsRelease 119-73

§1477 Snow water supply forecasting

Title 43 › Chapter CHAPTER 31— - DEPARTMENT OF THE INTERIOR › § 1477

Last updated Apr 6, 2026|Official source

Summary

Creates the Snow Water Supply Forecasting Program inside the Department of the Interior. The term "program" means that program. The Secretary of the Interior must make a program plan with other federal agencies and, by October 1, 2021, send Congress a report explaining how new snow-measuring tools (like synthetic aperture radar, laser altimetry, and other emerging technologies) will be used, what benefits for the environment and water reliability are expected, and how agencies will coordinate. When making water supply forecasts or deciding water allocations to federal contractors, the Secretary must use data from these new technologies as much as practicable. After the October 1, 2021 report, the Secretary must work with partners to improve snowpack measurement in specific watersheds. The work should improve forecasting, target river basins not covered as of December 27, 2020, and test or expand new or better measurement tools. The Secretary may share data and enter cooperative, cost‑sharing deals with partners such as water districts, states, universities, other federal agencies, private companies, and NGOs, and may provide nonreimbursable matching funds. All actions must follow federal and state environmental laws. Not later than 4 years after December 27, 2020, the Secretary must report to the House Committee on Natural Resources, the House Committee on Appropriations, the Senate Committee on Energy and Natural Resources, and the Senate Committee on Appropriations listing basins, the technologies used, and participating agencies and partners. Up to $15,000,000 is authorized for fiscal years 2022 through 2026.

Full Legal Text

Title 43, §1477

Public Lands — Source: USLM XML via OLRC

(a)This section may be cited as the “Snow Water Supply Forecasting Program Authorization Act”.
(b)In this section, the term “program” means the Snow Water Supply Forecasting Program established by subsection (c).
(c)(1)The Snow Water Supply Forecasting Program is hereby established within the Department of the Interior.
(2)To implement the program, the Secretary shall—
(A)develop the program framework in coordination with other Federal agencies pursuant to subsection (d), culminating in the report required under subsection (d)(3); and
(B)after submitting the report required by subsection (d)(3), implement activities to improve snowpack measurement in particular watersheds pursuant to subsection (e).
(d)(1)When determining water supply forecasts or allocations to Federal water contractors, the Secretary, acting through the Commissioner of the Bureau of Reclamation, shall incorporate, to the greatest extent practicable, information from emerging technologies for snowpack measurement, such as—
(A)synthetic aperture radar;
(B)laser altimetry; and
(C)other emerging technologies that the Secretary determines are likely to provide more accurate or timely snowpack measurement data.
(2)In carrying out paragraph (1), the Secretary shall coordinate data use and collection efforts with other Federal agencies that use or may benefit from the use of emerging technologies for snowpack measurement.
(3)Not later than October 1, 2021, the Secretary shall submit to Congress a report that—
(A)summarizes the use of emerging technologies pursuant to this section;
(B)describes benefits derived from the use of technologies summarized under subparagraph (A) related to the environment and increased water supply reliability; and
(C)describes how Federal agencies will coordinate to implement emerging technologies.
(e)(1)After submitting the report required under subsection (d)(3), the Secretary shall participate with program partners in implementing activities to improve snowpack measurement in particular watersheds.
(2)The program shall focus on activities that will maintain, establish, expand, or advance snowpack measurement consistent with the report required by subsection (d)(3), with an emphasis on—
(A)enhancing activities in river basins to achieve improved snow and water supply forecasting results;
(B)activities in river basins where snow water supply forecasting related activities described in this section are not occurring on December 27, 2020; and
(C)demonstrating or testing new, or improving existing, snow and water supply forecasting technology.
(3)The Secretary may provide information collected and analyzed under this section to program partners through appropriate mechanisms, including interagency agreements with Federal agencies, States, State agencies, or a combination thereof, leases, contracts, cooperative agreements, grants, loans, and memoranda of understanding.
(4)Program partners with whom the Secretary enters into cooperative agreements pursuant to paragraph (5) may include water districts, irrigation districts, water associations, universities, State agencies, other Federal agencies, private sector entities, non-governmental organizations, and other entities, as determined by the Secretary.
(5)The Secretary may—
(A)enter into cooperative agreements with program partners to allow the program to be administered efficiently and cost effectively through cost-sharing or by providing additional in-kind resources necessary for program implementation; and
(B)provide nonreimbursable matching funding for programmatic and operational activities under this section in consultation with program partners.
(6)Nothing in this section shall modify any obligation of the Secretary to comply with applicable Federal and State environmental laws in carrying out this section.
(f)Not later than 4 years after December 27, 2020, the Secretary shall submit a report to the Committee on Natural Resources and the Committee on Appropriations of the House of Representatives and the Committee on Energy and Natural Resources and the Committee on Appropriations of the Senate, that includes—
(1)a list of basins and sub-basins for which snowpack measurement technologies are being used under the program, including a description of each technology used; and
(2)a list of Federal agencies and program partners participating in each basin or sub-basin listed in paragraph (1).
(g)There is authorized to be appropriated to the Secretary to carry out this section $15,000,000, in the aggregate, for fiscal years 2022 through 2026.

Legislative History

Notes & Related Subsidiaries

References in Text

This section, referred to in subsecs. (b), (d)(3)(A), (e)(2)(B), (3), (5)(B), (6), and (g), was in the original “this Act”, which was translated as meaning section 1111 of Pub. L. 116–260, div. FF, Dec. 27, 2020, 134 Stat. 3249, to reflect the probable intent of Congress. Definitions For definition of “Secretary” as used in this section, see section 1115 of div. FF of Pub. L. 116–260, set out as a note under section 2330c of Title 33, Navigation and Navigable Waters.

Reference

Citations & Metadata

Citation

43 U.S.C. § 1477

Title 43Public Lands

Last Updated

Apr 6, 2026

Release point: 119-73