SB 178 Montana Senate · 2025 Regular Session

Provide for temporary lease of water rights

SB 178 allows individuals holding water rights (appropriators) to temporarily lease those rights to others for beneficial uses. To qualify, the water right must have been used within the last five years, and leases are limited to a maximum of 40 days per year and five years within any ten-year period. The bill specifies that the point of diversion cannot be changed, and leased water cannot be transported outside of Montana. An application process is established with the department, which includes notifying potentially affected water users and allowing for objections that could suspend a lease.
Bill status signed all 5 stages cleared
Introduction
Jan 2025
Committee Review
Apr 2025
Senate Passage
Apr 2025
House Passage
Apr 2025
Signed into Law
May 2025
Introduced Jan 21, 2025 Signed May 5, 2025
Maddy AI version diff · 13 comparisons

What changed between versions

SB0178_X(4).pdf SB0178_X(5).pdf · 7 edits
MODERATE
The bill modifies Montana's temporary water lease rules to simplify lease duration limits, clarify volume restrictions, and strengthen protections for existing water rights holders. Key changes include removing a 10-year lease cycle cap, adjusting the maximum annual lease period, and adding new requirements for department review timelines and adverse effect mitigation.
Scope change
The bill's scope remains focused on temporary water appropriation leases, but eligibility criteria and procedural requirements have been tightened to better protect existing water rights.
REQUIREMENT

Changed lease duration limits from '5 years one time during any consecutive 10-year period' to '5 years during any consecutive 10-year period', removing the one-time restriction.

Removed the 20-day annual lease limit, changing it to a maximum of 40 days per year.

Changed volume limits from a fixed 2,000 acre-feet to the appropriator's original water appropriation right limit.

Reorganized department review process into structured steps for application completeness, requirement evaluation, and approval/denial decisions.

TIMELINE

Added requirement for department to notify potentially affected appropriators within 10 days of application receipt.

ENFORCEMENT

Added new provision allowing department to revoke or modify approval if other water rights are adversely affected.

Added misdemeanor penalty with up to $500 fine for malicious frivolous objections to temporary leases.

Floor votes · Senate Apr 17, 2025 · House Apr 11, 2025

How they voted

473
Passed
Total votes 50
Apr 17, 2025
D Democratic18
15 Yea 3 Nay
83% Yea
R Republican32
32 Yea
100% Yea
Vote distribution
All Yea All Nay Mixed No data
Full legislative history

Actions timeline

Total actions
53
Key actions
9
Committee
6
Amendments
1
May 1, 2025
Signed into law
(S) Signed by Governor
upper
Apr 24, 2025
Lower · Passed
(H) Signed by Speaker
lower
Apr 24, 2025
Upper · Passed
(S) Signed by President
upper
Apr 17, 2025
Senate · Passed
Senate Vote: pass (47-3)
senate
Apr 12, 2025
Introduced
(H) Returned to Senate with Amendments
lower
Apr 11, 2025
House · Passed
House Vote: pass (99-0-1)
house
Apr 8, 2025
Lower · Passed
(H) Committee Report - (H) Natural Resources
lower
Apr 7, 2025
Lower · Passed
(H) Committee Executive Action - (H) Natural Resources
lower
Feb 17, 2025
Committee
(H) Referred to Committee - (H) Natural Resources
lower
Feb 11, 2025
Upper · Passed
(S) Committee Report - (S) Natural Resources
upper
Feb 10, 2025
Upper · Passed
(S) Committee Executive Action - (S) Natural Resources
upper
Jan 21, 2025
Committee
(S) Referred to Committee - (S) Natural Resources
upper
Jan 21, 2025
Introduced
(S) Introduced
upper
1 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Sue Vinton
Sue Vinton
RRepublican
MT
20