Flood Risk in Gray, NT: 2026 Assessment

Gray, Northern Territory· UNKNOWN
Gray faces a moderate risk of flooding, primarily from heavy rainfall events and potential stormwater runoff. The risk is expected to increase due to climate change.Updated 3 Apr 2026

Flood Risk Score

6.0/10

Gray faces a moderate risk of flooding, primarily from heavy rainfall events and potential stormwater runoff. The risk is expected to increase due to climate change.

Key Facts

Flood Risk
Gray faces a moderate risk of flooding, primarily from heavy rainfall events and potential stormwater runoff. The risk is expected to increase due to climate change.
Trend
increasing
Suburb
Gray, NT
Overall Risk
Medium
Postcode
0830
Highest high-risk exposure
11.4% of land (surface flood)

Flood Risk Analysis

Gray, located in Northern Territory, has a notable flood risk profile based on available data including proximity to waterways, elevation, and historical flood events. The Bureau of Meteorology (BOM) maintains river height and flood warning data for catchments across Northern Territory.

Historical flood events have impacted properties near the creek.

Gray faces a moderate risk of flooding, primarily from heavy rainfall events and potential stormwater runoff. The risk is expected to increase due to climate change.

For a comprehensive property-specific flood assessment including address-level elevation data, flood overlay mapping, and insurance cost estimates, use the ClimateNest full analysis tool. General suburb data cannot replace a site-specific evaluation.

Gray sits within ClimateNest's suburb-level hazard model for flood risk. 2.9% of the suburb's land area is mapped in high-risk flood zones and 76.6% in moderate-risk zones, based on the national hazard overlay. Exposure at this scale varies street by street, which is why an address-level check matters before you buy or insure a specific property in Gray.

Gray (postcode 0830) is tracked in ClimateNest's suburb hazard model, which maps the share of the suburb's land exposed to each hazard at high and moderate levels. The suburb's highest high-risk exposures are surface flood (11.4% of land in high-risk zones), bushfire (8% of land in high-risk zones), tropical cyclone (7.5% of land in high-risk zones). Exposure is not uniform across Gray — individual properties can sit well above or below these averages, so an address-level check is recommended before buying, selling or insuring.

Local Hazard Evidence

Nearest WaterwayRapid Creek
Elevation Range5-15 meters
Flood Zone ClassificationAreas near Rapid Creek are susceptible to flooding.

Historical Events

2023
Minor

Minor flooding occurred after a period of heavy rainfall, affecting some low-lying areas.

2012
Moderate

Heavy rainfall caused localized flooding in Gray, impacting some residential areas.

Adaptation & Mitigation Actions

Improve stormwater drainage

Near-term

Upgrade stormwater infrastructure to reduce the risk of flooding during heavy rainfall events.

Est. cost: Medium

Implement heat mitigation strategies

Immediate

Plant trees and create green spaces to reduce the urban heat island effect. Provide cooling centers for vulnerable populations during heatwaves.

Est. cost: Medium

Strengthen coastal defenses

Long-term

Construct seawalls and other coastal defenses to protect against sea level rise and storm surge.

Est. cost: High

Develop a community emergency plan

Near-term

Create a plan to prepare for and respond to extreme weather events, including heatwaves, floods, and bushfires.

Est. cost: Low

Council & Emergency Services

City of Darwin
Emergency Services

Data last updated: 3 April 2026

Explore Gray Risk Reports

Frequently Asked Questions

Is Gray at risk of flooding?

Based on available data, Gray has a notable flood risk profile. Flood risk varies by address — check your specific property for precise flood zone mapping and elevation data with ClimateNest.

What flood insurance costs can I expect in Gray?

Insurance costs for flood cover in Gray depend on the property's flood zone classification, elevation, and proximity to waterways. ClimateNest provides address-level insurance cost estimates based on your property's specific hazard exposure.

Does flood risk affect property values in Gray?

Yes, flood risk can affect property values in Gray. Properties in mapped flood zones may experience lower buyer demand, reduced valuations, and higher insurance costs. Lenders increasingly assess flood exposure as part of mortgage risk evaluation.

How does elevation affect flood risk in Gray?

Elevation is a critical factor in flood risk. Properties at higher elevations within Gray typically have lower flood exposure than those near waterways or in low-lying areas. Address-level elevation data combined with BOM flood mapping provides the most accurate picture.

What share of Gray is exposed to high surface flood risk?

ClimateNest's hazard overlay maps 11.4% of Gray in high-risk zones for surface flood, with a further 70.4% in moderate-risk zones. Suburb-level exposure is not uniform — individual properties can differ from these averages, so an address-level check is recommended.

Is Gray Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Gray, Northern Territory, covering flood, bushfire, sea level rise and more.

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What A$69 could save you from

$7.2B
2022 insured disaster losses*
$300B+
climate risk to property by 2050*
30-120%
insurance premium increases in high-risk areas*

*Industry sources: ICA, APRA, RBA

Full report from A$69 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections