What the mapping shows for Newnham
Part of Newnham is mapped as subject to coastal inundation.
7.8% of Newnham is mapped as subject to coastal inundation (coastal inundation hazard band, including 1% AEP storm tide at 2100)
86.9% of Newnham is mapped as subject to coastal erosion (coastal erosion hazard band mapped for the Tasmanian planning system)
Tasmanian Coastal Inundation Hazard Bands (20161201), State of Tasmania (Department of Premier and Cabinet), Creative Commons Attribution 4.0, retrieved 2026-10-23
This is a share of the suburb's land area from a published state dataset, not an assessment of any property. A ClimateNest report scores the individual address across eight hazards, with insurance and value projections to 2050.
Check an address in Newnham →Flood Risk in Newnham, TAS: 2026 Assessment
7.8% of Newnham is mapped as subject to coastal inundation (coastal inundation hazard band, including 1% AEP storm tide at 2100)
That figure covers the suburb. Check whether your address is inside it - address-level, sourced, A$49.
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Flood Risk Score
Not assessedNewnham faces a moderate risk of flooding due to its proximity to the Tamar River and low-lying areas. Increased rainfall intensity could exacerbate this risk.
Key Facts
- Flood Risk
- Newnham faces a moderate risk of flooding due to its proximity to the Tamar River and low-lying areas. Increased rainfall intensity could exacerbate this risk.
- Trend
- increasing
- Suburb
- Newnham, TAS
- Overall Risk
- Medium
- Postcode
- 7248
Flood Risk Analysis
Newnham, located in Tasmania, has a location-specific 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 Tasmania.
Historical flood events have impacted properties near the river.
Newnham faces a moderate risk of flooding due to its proximity to the Tamar River and low-lying areas. Increased rainfall intensity could exacerbate this risk.
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.
ClimateNest assesses hazards at the address rather than the suburb, because exposure varies street by street within Newnham. An address-level check is what tells you about a specific property before you buy, sell or insure it.
Local Hazard Evidence
Historical Events
Significant flooding occurred in northern Tasmania, including areas near Newnham, following heavy rainfall.
Adaptation & Mitigation Actions
Improve Flood Defenses
Near-termInvest in infrastructure to protect against flooding, such as levees, seawalls, and improved drainage systems.
Est. cost: High
Bushfire Preparedness
ImmediateImplement bushfire mitigation measures, such as clearing vegetation around homes and creating firebreaks.
Est. cost: Low
Heatwave Action Plan
Near-termDevelop a heatwave action plan to protect vulnerable populations during extreme heat events.
Est. cost: Medium
Coastal Management Strategy
Long-termDevelop a coastal management strategy to address the impacts of sea level rise and coastal erosion.
Est. cost: High
Community Education
Near-termRaise community awareness about climate risks and adaptation measures.
Est. cost: Low
Council & Emergency Services
Explore Newnham Risk Reports
View other climate risk assessments for Newnham:
Frequently Asked Questions
Is Newnham at risk of flooding?
Based on available data, Newnham has a location-specific 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 Newnham?
Insurance costs for flood cover in Newnham 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 Newnham?
Yes, flood risk can affect property values in Newnham. 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 Newnham?
Elevation is a critical factor in flood risk. Properties at higher elevations within Newnham 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.
Is Newnham Safe from Climate Risk?
Enter your address below for an instant climate risk assessment for Newnham, Tasmania, covering flood, bushfire, sea level rise and more.
What A$49 could save you from
*Industry sources: ICA, APRA, RBA
Full report from A$49 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections