Last updated: · Scores from FEMA’s National Risk Index (December 2025)
Prince George's County has the lowest community resilience score in Maryland, 29.8, rated relatively low. FEMA's risk score weighs expected losses against social vulnerability and community resilience, so the county's $121.8 million a year in expected losses, fourth in the state, produce the third-highest risk score, 93.2. Inland flooding makes up 54% of those losses.
What drives the risk
Flooding comes from streams and from rain that overwhelms storm drains, and FEMA's $65.1 million estimate counts both. Cheverly, for one, experiences regular flooding and had a major flood in 2020.
Below flooding, three hazards cost roughly the same: heat waves at $11.9 million a year, tornadoes at $11.0 million and hurricanes at $10.9 million. The Maryland Department of Health reports that Prince George's and Baltimore City had the most heat-related deaths in the state in 2023 and 2024.
Where the mitigation money has gone
FEMA lists 22 funded projects since fiscal 1994, worth $9.8 million, or 7% of Maryland's mitigation money for 11% of its expected losses. That is the closest match among Maryland's four largest-loss jurisdictions, and more than half of it has come since fiscal 2020.
Five projects in the county were funded under DR-4491, Maryland's COVID-19 declaration, more than in any other jurisdiction, including $1.1 million for floodwater storage and diversion. In fiscal 2024, congressionally directed grants added $1.7 million for Cheverly's storm drains and a town flood plan and $1.4 million for flood control in the Anacostia River watershed. Earlier grants bought out 12 landslide-prone properties.
The mitigation plan
The County Council adopted the joint plan with the City of Laurel through Resolution CR-65-2023 on September 26, 2023, and FEMA approved it by letter on November 3, 2023. It runs through September 25, 2028. The county's 2024 progress report shows a countywide flood assessment, including mapping of rain-driven flooding, underway in several watersheds, and a 40-gauge flood warning system in operation. It also shows a high-priority action to prohibit waivers for development in floodplains as not implemented.
What we'd look at next
The county has shown it can win flood money when projects are ready, and the countywide flood assessment should feed the next list. The floodplain waiver action is where we'd start. With the lowest resilience score in the state, Prince George's can least afford new exposure in places it already knows will flood.
Hazards ranked by expected annual loss
What FEMA expects each hazard to cost Prince George's County in an average year, in damage to buildings and crops and in the dollar value it puts on deaths and injuries. Inland flooding leads at $65.1M a year.
- Inland Flooding$65.1M54%
- Heat Wave$11.9M10%
- Tornado$11M9%
- Hurricane$10.9M9%
- Earthquake$8.3M7%
- Lightning$3.7M3%
- Strong Wind$3M2%
- Cold Wave$2.9M2%
Of the $121.8M total: buildings $85.6M, people $34.9M, agriculture $1.2M.
All 18 hazards FEMA scores
| Hazard | Expected annual loss | Loss rating | Risk rating | Events on record |
|---|---|---|---|---|
| Inland Flooding | $65.14M | Relatively High | Relatively High | 117 |
| Heat Wave | $11.9M | Relatively High | Relatively High | 103 |
| Tornado | $11.02M | Relatively High | Relatively High | 26 |
| Hurricane | $10.86M | Relatively High | Relatively Moderate | 24 |
| Earthquake | $8.29M | Relatively Moderate | Relatively Moderate | — |
| Lightning | $3.7M | Very High | Very High | — |
| Strong Wind | $2.99M | Relatively High | Relatively High | 275 |
| Cold Wave | $2.89M | Relatively Moderate | Relatively Moderate | 23 |
| Winter Weather | $1.71M | Very High | Very High | 177 |
| Hail | $1.64M | Relatively Moderate | Relatively Moderate | 127 |
| Drought | $1.05M | Relatively Moderate | Relatively Moderate | 154 |
| Ice Storm | $392K | Relatively Moderate | Relatively Moderate | 24 |
| Coastal Flooding | $106K | Relatively Low | Relatively Low | — |
| Landslide | $59K | Relatively Low | Relatively Moderate | — |
| Wildfire | $27K | Very Low | Very Low | — |
| Avalanche | — | Not Applicable | Not Applicable | — |
| Tsunami | — | Not Applicable | Not Applicable | — |
| Volcanic Activity | — | Not Applicable | Not Applicable | — |
FEMA hazard mitigation grants
Projects FEMA has funded in Prince George's County through its Hazard Mitigation Assistance programs, as OpenFEMA lists them. Grants to towns and cities inside the county count here; statewide grants don’t.
- Funded projects
- 22
- Federal share
- $9.8M
- Fiscal years
- 1994–2024
By program
- HMGP · Hazard Mitigation Grant Program$3.7M · 10 projects
- LPDM · Legislative Pre-Disaster Mitigation$3.1M · 2 projects
- PDM · Pre-Disaster Mitigation$2.7M · 6 projects
- BRIC · Building Resilient Infrastructure and Communities$260K · 2 projects
- FMA · Flood Mitigation Assistance$94K · 2 projects
Most recent projects
FY2024 · LPDM · Obligated$1.38M
Other Non Construction
Maryland Department of Emergency
FY2024 · LPDM · Obligated$1.69M
Other Non Construction
Town of Cheverly
FY2021 · BRIC · Awarded$209K
Snow Hill Manor Park Stream Restoration Project
Prince George's County, Maryland
FY2020 · HMGP · Approved$881K
Vegetation Management - Non Coastal Shoreline Stabilization
Prince George's (County)
FY2020 · HMGP · Approved$1.12M
Floodwater Storage and Diversion
Prince George's (County)
FY2020 · HMGP · Approved$144K
Stormwater Management - Diversions
Prince George's (County)
FY2020 · HMGP · Approved$232K
Generators
Laurel
FY2020 · HMGP · Approved$81K
Public Awareness and Education (Brochures, Workshops, Videos, etc.)
Prince George's (County)
| FY | Project | Recipient | Federal share | Status |
|---|---|---|---|---|
| 2024 | Other Non ConstructionLPDM · LPDM-PJ-03-MD-2024-006 | Maryland Department of Emergency | $1.38M | Obligated |
| 2024 | Other Non ConstructionLPDM · LPDM-PJ-03-MD-2024-004 | Town of Cheverly | $1.69M | Obligated |
| 2021 | Snow Hill Manor Park Stream Restoration ProjectBRIC · EMP-2021-BR-053-0010 | Prince George's County, Maryland | $209K | Awarded |
| 2020 | Vegetation Management - Non Coastal Shoreline StabilizationHMGP · DR-4491-0017-R | Prince George's (County) | $881K | Approved |
| 2020 | Floodwater Storage and DiversionHMGP · DR-4491-0018-R | Prince George's (County) | $1.12M | Approved |
| 2020 | Stormwater Management - DiversionsHMGP · DR-4491-0016-R | Prince George's (County) | $144K | Approved |
| 2020 | GeneratorsHMGP · DR-4491-0012-R | Laurel | $232K | Approved |
| 2020 | Public Awareness and Education (Brochures, Workshops, Videos, etc.)HMGP · DR-4491-0009-F | Prince George's (County) | $81K | Approved |
What the money paid for most often
- Local Multihazard Mitigation Plan ×5
- Other Non Construction ×2
- Acquisition of Private Real Property (Structures and Land) - Riverine ×2
- Acquisition of Private Real Property (Structures and Land) - Landslide ×2
Hazard mitigation plan
Prince George's County and City of Laurel Hazard Mitigation Plan 2023
A joint plan with the City of Laurel, adopted by the County Council through Resolution CR-65-2023. It names 43 mitigation actions for the county, 15 of them on flooding.
- Adopted
- September 2023
- FEMA approval runs to
- September 25, 2028
Frequently Asked Questions
Neighboring counties
- Montgomery CountyRelatively Moderate risk · Inland Flooding$126.4Ma year
- Howard CountyRelatively Low risk · Inland Flooding$52Ma year
- Anne Arundel CountyRelatively Moderate risk · Inland Flooding$74.7Ma year
- Calvert CountyVery Low risk · Inland Flooding$16Ma year
- Charles CountyRelatively Low risk · Inland Flooding$22.5Ma year
About this data
Scores. FEMA’s National Risk Index (December 2025 release) ranks every U.S. county against all the others. A score is a percentile: a risk score of 82 means a higher value than 82% of counties. The risk index is the expected annual loss scaled up for higher social vulnerability and down for stronger community resilience. FEMA groups risk and loss into five ratings by natural breaks, and vulnerability and resilience into national fifths.
Expected annual loss is FEMA’s modeled average yearly loss from 18 natural hazards to buildings (at replacement value), crops and livestock, and people, whose expected deaths and injuries FEMA converts to dollars. It is an average, not a forecast: a low-risk county can still have a bad year.
Vulnerability and resilience. Social vulnerability comes from the U.S. Census Bureau’s Community Resilience Estimates. Community resilience is FEMA’s version of the University of South Carolina’s Baseline Resilience Indicators for Communities (2020), which counts past mitigation spending among its inputs. Vulnerability scores bottom out: 334 of the 3,144 counties scored, 8 of them in Maryland, share the lowest score, 10.6. Population is the 2020 Census count.
Grants are FEMA’s Hazard Mitigation Assistance awards in Maryland that are closed, approved, obligated or awarded: the projects in OpenFEMA’s older project file, which FEMA froze on August 31, 2026, plus the grants FEMA has managed in FEMA GO since fiscal 2020, from HMA Subapplications (both retrieved September 30, 2026). Projects FEMA now lists as withdrawn or denied are left out unless money was obligated to them. Amounts are the federal share obligated. Each grant counts toward the county it serves; 103 statewide grants ($24.1M) count toward none.
FEMA describes the index as one source for risk-reduction decisions, to weigh alongside benefit-cost analysis and local knowledge.
National Risk IndexRisk Index data (OpenFEMA)HMA Subapplications (OpenFEMA)Risk Index FAQ (FEMA, PDF)
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