PolicyBrief
H.R. 900
119th CongressApr 9th 2025
Sinkhole Mapping Act of 2025
AWAITING HOUSE

The Sinkhole Mapping Act of 2025 directs the United States Geological Survey to establish a program to map zones at greater risk of sinkhole formation and make this information accessible to community planners and emergency managers. The USGS will study the causes of sinkholes, create risk maps using 3D elevation data, and update these maps at least every five years.

Darren Soto
D

Darren Soto

Representative

FL-9

LEGISLATION

New Bill Mandates USGS to Map Sinkhole-Prone Areas: Aims to Bolster Community Planning and Emergency Preparedness by 2026

The Sinkhole Mapping Act of 2025 directs the United States Geological Survey (USGS) to get serious about sinkholes. Specifically, it tasks the USGS with launching a program to figure out what's causing these ground-swallowing hazards, both short-term (think big storms) and long-term (like drought and groundwater depletion). The agency will then create detailed maps highlighting areas at higher risk of sinkhole formation. These maps will be reviewed and updated at least every five years, as stated in SEC. 2.

Digging into the Sinkhole Problem

This bill isn't just about identifying the problem; it's about providing practical tools. The USGS is required to create a website specifically for community planners and emergency managers, making the sinkhole maps and related information easily accessible. This means that folks planning new developments or preparing for potential disasters will have crucial data at their fingertips. The use of 3D elevation data, also mandated in SEC. 2, should enhance the accuracy of these maps.

Real-World Impacts: From Construction Sites to Emergency Routes

Imagine a construction company planning a new housing development. With access to these maps, they can identify potential sinkhole risks before breaking ground, potentially saving them (and future homeowners) from costly and dangerous situations. Or consider emergency responders: knowing where sinkholes are more likely to occur can help them plan evacuation routes and stage resources more effectively, minimizing the danger to the public.

While the bill has clear benefits for community safety, there are a few things to keep an eye on. The accuracy of the maps is key, and that will depend on adequate funding and avoiding any political meddling in the mapping process. There's also the question of how insurance companies might use this data. Could it lead to higher premiums or denied coverage in high-risk zones? The bill doesn't address this directly, but it's a real-world consideration. The bill also leaves room for interpretation in defining "areas with a higher risk of sinkholes," which could lead to some inconsistencies. Also, the bill sponsor has ties to the Real Estate industry, a potential conflict of interest, as this bill could directly impact property values.

Overall, the Sinkhole Mapping Act of 2025 represents a proactive step toward mitigating sinkhole risks. By providing better information, it aims to improve community planning, enhance emergency preparedness, and ultimately protect both property and lives. It builds on existing USGS expertise, but gives it a much-needed, sinkhole-specific focus.