H.R. 900: Sinkhole Mapping Act of 2025

The Sinkhole Mapping Act of 2025 aims to address the issue of sinkholes by establishing a program under the United States Geological Survey (USGS) to identify areas that are at greater risk for sinkhole formation. Here are the main points of the bill:

Purpose of the Bill

The primary objective of the bill is to enhance the understanding of sinkhole formation and to provide detailed mapping of high-risk areas. The legislation recognizes the need for scientific assessment of various factors contributing to sinkholes, such as:

• Extreme storm events
• Prolonged droughts that alter water management
• Aquifer depletion
• Significant changes in water usage

Program Implementation

The USGS, led by its Director, will be responsible for implementing the following actions:

1. Studying the mechanisms that lead to sinkhole development.
2. Creating maps that show zones with a higher likelihood of sinkhole occurrences.

Data Utilization

To create these maps, the USGS Director will use existing 3D elevation data collected under the National Landslide Preparedness Act. This data will enhance the accuracy of the maps and assist in identifying vulnerable regions effectively.

Ongoing Reviews

The bill stipulates that the USGS will review and possibly update the sinkhole risk maps at least once every five years, or more frequently if deemed necessary. This ensures that the information remains current and relevant to changing environmental conditions.

Public Access

In addition to mapping, the USGS will create and maintain a public website where these maps and other pertinent information will be available. This resource is intended for community planners and emergency managers to aid in their decision-making and planning efforts.

Relevant Companies

None found.