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US Congress · H.R. 3857 · Passed the House

Snow Water Supply Forecasting Reauthorization Act of 2025

Introduced
Moved
Reached a final decision
Introduced 2025-06-10
Derived from the official record below.

Officially: “Snow Water Supply Forecasting Reauthorization Act of 2025 Read the full text

Water Resources Development

What it does

Snow Water Supply Forecasting Reauthorization Act of 2025 This bill reauthorizes through FY2031 and modifies the Snow Water Supply Forecasting Program of the Bureau of Reclamation. Under the existing program, Reclamation implements activities to improve snowpack measurements used for water supply forecasts in certain western states. The bill directs Reclamation to incorporate, to the greatest extent practicable, information from technologies that provide complete integration of accurate, timely, and spatially complete snowpack measurements and models when determining water supply forecasts or
Summary by the Congressional Research Service, from the official record. Plain-language version below. Not legal advice.

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1Short title

This section would let the Act be called the Snow Water Supply Forecasting Reauthorization Act of 2025.

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Official text, verbatim from the record

1. Short title This Act may be cited as the Snow Water Supply Forecasting Reauthorization Act of 2025 .

2Snow Water Supply Forecasting Program

This section would amend section 1111 of the Snow Water Supply Forecasting Program Authorization Act (43 U.S.C. 1477), which sets up the Snow Water Supply Forecasting Program. In subsection (c)(2)(A), an activity that now has to end with the report required under subsection (d)(3) would instead be carried out with an emphasis on deploying technologies that integrate snowpack measuring and modeling. In subsection (c)(2)(B), a separate activity in that subsection would no longer have to wait until after that report is submitted before it can happen. The heading for the subsection (d)(1) data requirement would be updated to mention integrated modeling, and the list of technologies it requires would change from emerging technologies for snowpack measurement to commercially available technologies that provide complete integration of accurate, timely, and spatially complete snowpack measurements and models, specifically airborne laser altimetry, airborne imaging spectroscopy, and integrated physics-based snowpack and hydrologic modeling, plus any other technology the Secretary determines is likely to give more accurate or timely snowpack data for operational water management needs. The section would also eliminate the subsection (d)(3) report requirement itself. In subsection (e)(1), an activity would likewise no longer have to wait until after that report is submitted before it can happen. It would rewrite the program's focus in subsection (e)(2) so the program centers on activities that maintain, establish, expand, or advance snowpack measurement and integrated modeling, with emphasis on improving snow and water supply forecasts that respond better to changing weather and watershed conditions, integrating those activities in real time with water supply forecasts, carrying out those activities in river basins where they can produce snow and water supply data to help with water management decisions, including water management decisions that involve more than one state, and building program partners' capacity to use the new measurement and forecasting tools. In the subsection covering river basin selection, it would update a cross-reference to point to this reauthorization act instead of the original act, remove references to sub-basins so the relevant requirements apply only at the river-basin level, broaden a reference to technologies so it also covers integrated modeling technologies, and broaden what must be described about a selected river basin from just the technology used to the application, outcome, and data resources used. Finally, it would change the program's funding authorization from one combined amount covering fiscal years 2022 through 2026 to a separate amount authorized for each of fiscal years 2027 through 2031.

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Official text, verbatim from the record

2. Snow Water Supply Forecasting Program Section 1111 of the Snow Water Supply Forecasting Program Authorization Act ( 43 U.S.C. 1477 ) is amended— (1) in subsection (c)(2)— (A) in subparagraph (A), by striking culminating in the report required under subsection (d)(3) and inserting with an emphasis on deployment of technologies that provide integration of snowpack measuring and modeling ; and (B) in subparagraph (B), by striking after submitting the report required by subsection (d)(3), ; (2) in subsection (d)— (A) in paragraph (1)— (i) in the heading, by adding with integrated modeling after data ; (ii) by striking emerging technologies for snowpack measurement, such as and inserting commercially available technologies that provide complete integration of accurate, timely, and spatially complete snowpack measurements and models, including the integration of ; and (iii) by striking subparagraphs (A) through (C) and inserting the following: (A) airborne laser altimetry; (B) airborne imaging spectroscopy; (C) integrated physics-based snowpack and hydrologic modeling; and (D) other technologies that the Secretary determines are likely to provide more accurate or timely snowpack measurement data commensurate with operational water management needs. ; and (B) by striking paragraph (3); (3) in subsection (e)— (A) in paragraph (1), by striking After submitting the report required under subsection (d)(3), the and inserting The ; and (B) by striking paragraph (2) and inserting the following: (2) Focus The program shall focus on activities that will maintain, establish, expand, or advance snowpack measurement and integrated modeling, with an emphasis on— (A) enhancing activities to achieve improved snow and water supply forecasting results that are more responsive to changing weather and watershed conditions; (B) real-time integration of activities described in this section with water supply forecasts; (C) activities in river basins where activities described in this section can produce snow and water supply data to inform water management decisions, including interstate water management decisions; and (D) building program partners’ capacity to implement and adapt to the new measurement and forecast capabilities enabled under this program. ; (4) in subsection (f)— (A) by striking of this Act and inserting of the Snow Water Supply Forecasting Reauthorization Act of 2025 ; (B) in paragraph (1)— (i) by striking and sub-basins ; (ii) by striking technologies and inserting and integrated modeling technologies ; and (iii) by striking technology used and inserting application, outcome, and data resources used ; and (C) in paragraph (2), by striking or sub-basin ; and (5) in subparagraph (g), by striking , in the aggregate, for fiscal years 2022 through 2026 and inserting for each of fiscal years 2027 through 2031 .

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Where it is

Introduced · 2025-06-10

In the House.

Committee hearing · 2025-06-24
Passed the House · 2025-12-10
Senate floor vote · next · the next step

Official documents

The on-site text is shown verbatim from the GovInfo publication, captured 2026-07-23. The same version at GovInfo.

The numbers

29%
of bills that passed one chamber became law in the 118th Congress, 2023 to 2024 (n=939)
3
sponsors, out of 218 needed to pass

Who is lobbying on this

TROUT UNLIMITEDvia TROUT UNLIMITED
3 filings
NATIONAL WATER RESOURCES ASSOCIATIONvia WATER STRATEGIES, LLC
2 filings
NATURE CONSERVANCYvia THE NATURE CONSERVANCY
1 filing
WESTERN URBAN WATER COALITIONvia ASHURST PERKINS COIE US LLP (NAME CHANGE EFFECTIVE 6.26.26)
1 filing
From 7 filings in federal lobbying disclosures (LDA), via lda.gov, naming this bill (2025 to 2026). Filings are self-reported by lobbying firms and show who is paid to influence this bill. They do not say which side, or whether it worked.
Every fact on this page links to its source, starting with the official bill record. Last action: Committee on Energy and Natural Resources. Ordered to be reported with an amendment in the nature of a substitute favorably. (2026-06-10).