HR 900 United States House · 119th Congress

Sinkhole Mapping Act of 2025

The Sinkhole Mapping Act of 2025 directs the U.S. Geological Survey (USGS) to study sinkhole causes - including extreme weather, drought, and water management shifts - and create updated risk maps showing areas prone to sinkholes. It requires the USGS to use specific 3D elevation data from existing law and maintain a public website with these maps for community planners and emergency managers. The maps must be reviewed and updated at least every five years. This bill directly affects local officials and emergency responders by providing accessible, science-based hazard information to inform land-use decisions and safety planning.

Bill status passed 3 of 5 stages cleared

Introduction

Jan 2025

Committee Review

Sep 2026

House Passage

Jul 2025

Senate Passage

President

Introduced Jan 31, 2025 Last action Sep 16, 2026

Maddy AI version diff · 1 comparison

What changed between versions

Introduced in House → Engrossed in House · 1 edit · Jul 14, 2025

MINOR

A funding condition was added to the sinkhole hazard identification program, making it contingent on available appropriations rather than a mandatory directive. This means the USGS Director is no longer required to establish the program unless Congress specifically appropriates funds for it in advance.

FISCAL

The requirement for the USGS Director to establish a sinkhole hazard identification program now includes the condition 'Subject to the availability of appropriations made in advance for such purpose,' converting what was a mandatory obligation into one that depends on future budget allocations.

Floor votes

How they voted

This bill passed the House by voice vote (no roll call recorded).

Full legislative history

Actions timeline

Total actions

Key actions

Committee

Amendments

Sep 16, 2026

Upper · Passed

Committee on Energy and Natural Resources. Hearings held.

upper

Jul 15, 2025

Committee

Received in the Senate and Read twice and referred to the Committee on Energy and Natural Resources.

upper

Jul 14, 2025

Introduced

On motion to suspend the rules and pass the bill, as amended Agreed to by voice vote. (text: CR H3223)

lower

Jul 14, 2025

Lower · Passed

Passed/agreed to in House: On motion to suspend the rules and pass the bill, as amended Agreed to by voice vote.

lower

Jul 14, 2025

Introduced

Mr. Westerman moved to suspend the rules and pass the bill, as amended.

lower

Jul 2, 2025

Lower · Passed

Reported (Amended) by the Committee on Natural Resources. H. Rept. 119-182.

lower

Apr 9, 2025

Lower · Passed

Committee Consideration and Mark-up Session Held

lower

Jan 31, 2025

Committee

Referred to the House Committee on Natural Resources.

lower

Jan 31, 2025

Introduced

Introduced in House

lower

1 primary · 8 co-sponsors