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FLOOD RISK
SCORECARD
123 Demo Street, Sample City, ON A1B 2C3, Canada
RECOMMENDATION

Take proactive flood protection measures

This property is in a region with increasing intensity and frequency of heavy rainfall. It's important to prepare for extreme weather events and the possibility of flooding. Refer to your Scorecard.

Why this matters:

The flood risk for this property has been assessed by NOAH using advanced climate risk modelling. Through physics-based computer simulations, NOAH evaluated how rainfall interacts with the property's municipal drainage systems—both today and over future time horizons (5, 10, 15, 20, and 30 years), accounting for projected increases in extreme weather. NOAH's platform combines civil engineering expertise with hydraulic modeling to analyze the capacity of local stormwater and sewer infrastructure. NOAH's Flood Risk Scorecard is powered by GIS data, digital elevation models, road networks, and detailed municipal infrastructure records.

FLOOD RISK SCORE & METHODOLOGY
23
100

NOAH's Flood Risk Scorecard summarizes factors affecting FLOODING HAZARDS that increase the chance of damage to the property or that could create unsafe conditions during a flood. Flood scores below 75 indicate that flood risks should be considered. Increased FLOOD RESILIENCY is highly recommended. Refer to the FLOOD RESILIENCY section below to understand how the score for this property can be improved.

Scoring Breakdown:

The overall score (out of 100) is divided into two main components:

13
Hazard Score
Based on both traditional 2-100 year flood events, and multiple simulations of real historic flood events that could have impacted the property.
10
Flood Resiliency
Reflects how well the property is protected from flood damage.

Scoring Legend:

0-19
20-34
35-49
50-64
65-74
75-89
90-100
Extreme
Flood Risk
Very High
Flood Risk
High
Flood Risk
Elevated
Flood Risk
Reduced
Flood Risk
Flood
Resilient
Highly Flood
Resilient
WATER VELOCITY
Speedometer Background
1.20m/s

Flood velocity is the force of moving water on people and structures. Water velocity over 0.75 m/s can easily destabilize children or ederly. Over 1.5 m/s will cause most adults to lose footing. Over 2.0 m/s is considered highly dangerous and can sweep away cars and small structures.

FUTURE FLOOD RISK
20/100
17/100
15/100
13/100
11/100
5 YRS
10 Hazard Score
10 Flood Resiliency
10 YRS
7 Hazard Score
10 Flood Resiliency
15 YRS
5 Hazard Score
10 Flood Resiliency
20 YRS
3 Hazard Score
10 Flood Resiliency
30 YRS
1 Hazard Score
10 Flood Resiliency
FLOOD DEPTH
2M1st Floor Ceiling
1MDoorway
0.3MCar Tire
Flood Depth Illustration
0.8M

NOAH's modelling predicts this property could experience flooding greater than 0.8m, likely exceeding the first-floor elevation. This flood depth makes evacuation and outdoor pedestrian movement impossible. Extreme flood damage including structural damage is likely. Evacuation is only possible with the assistance of trained Emergency Personnel. A flood response strategy with Emergency Management Procedures is required.

DEPTH X VELOCITY
Subject PropertySubject Property
Depth x Velocity = 0.37 m²/s ("2x2" Rule)
(4 ft²/s)
Depth x Velocity = 0.56 m²/s ("3x2" Rule)
(6 ft²/s)
Depth x Velocity = 0.84 m²/s ("3x3" Rule)
(9 ft²/s)
Low Flood Risk Conditions
W=976(200) f=0.30
Limit of Low Flood Risk Conditions
W=1464(300) f=0.30
Flood Resiliency Options Required
W=1952(400) f=0.30
Trained Emergency Response Required

Flood hazards are assessed by considering the combined depth and velocity (DV). For most modeled events, this property's D*V rating is high enough that a risk to property occupants is present.

FLOOD RISK BY AREA COMPARISON
SERVICE AREA
0
BUILDINGS
0
AVERAGE
0
MODE

A Service Area is a Sewershed – the infrastructure where all wastewater and stormwater drains into a common sewer system.

CLIMATE-ADJUSTED FLOOD RISK SCORE

A changing climate will impact this property's flood score over time. Under a "business as usual" (RCP 8.5) scenario, the NOAH flood score is projected to change from 23 to 11.

RESILIENCY ASSESSMENT
Loading resiliency assessment...

This property has the following hazard flood risk from extreme rainfall:

Very High Flood Risk

Sample property map
Street view of 123 Demo Street, Sample City, ON A1B 2C3, Canada