FLOOD RISK AND STORMWATER MODELLING
Grace GIS provides advanced flood and stormwater modelling services to help governments, water authorities, and urban planners manage flood risk, design resilient infrastructure, and support climate adaptation strategies. Using high-resolution LiDAR data, hydrological models, and spatial analysis, we deliver accurate, decision-ready insights into water behaviour across diverse landscapes.
Key Services
Grace GIS’s flood and stormwater services combine scientific accuracy with practical planning value—empowering stakeholders to reduce risk, enhance preparedness, and build climate-resilient communities.
Flood Inundation Modelling
Stormwater Network Analysis
Coastal Inundation & Sea-Level Rise Modelling
Using LiDAR and elevation data to accurately define natural and engineered catchments for water supply, drainage, and flood planning. Catchment delineation for water diversion feasibility studies.
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Hughenden Irrigation Project - Prelim Catchment Studies
Blacktown City Council - Hydro
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Identification and geolocation of speed humps, signage, crossings, and other road features for safety assessments and planning upgrades.
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Modelling surface runoff, inflows, and water availability using tools like SWAT and rainfall/soil datasets to inform dam site selection, yield estimation, and stormwater planning.
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Climate Adaptation Modelling
Identifying and mapping gravity-fed irrigation zones, infrastructure layouts, and diversion feasibility to support agricultural and rural development projects. ​​Estimating water yield for dam site selection. Gravity-fed irrigation mapping for efficient distribution.
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Blacktown City Council - Hydro​
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Water Velocity & Flow Path Estimation
Incorporating long-term climate and rainfall datasets into hydrological and catchment models to provide a more accurate, future-ready understanding of water systems. This involves sourcing and analysing historical climate records, alongside soil and land use information to simulate real-world conditions over time.
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