Catchment Simulation Solutions
Catchment Simulation Solutions is a Sydney-based specialist consultancy and software vendor providing flood, drainage, and water resources services to Australian local government, state agencies, and private developers, powered by its proprietary CatchmentSIM and Storm Injector hydrologic modelling products.
- Company typePrivate
- Founded-
- HeadquartersSydney, Australia
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Catchment Simulation Solutions does
Catchment Simulation Solutions (CSS) is a Sydney-based specialist consultancy and proprietary software vendor serving the Australian flood, drainage, and water resources sector. The company delivers consulting services including floodplain management studies, flood impact assessments, water resources studies (using eWater Source), peer reviews, and expert witness testimony in matters such as NSW Land and Environment Court proceedings. Its primary customers are local government councils, state agencies, and private developers requiring flood risk assessment for planning and infrastructure decisions, with 40+ government-funded flood studies completed over 20+ years of operation.
The company builds and commercializes two core software products. CatchmentSIM is a GIS-based terrain analysis package that automates catchment delineation and setup of lumped hydrologic models using a proprietary vector-based flow mapping algorithm that outperforms the standard D8 method in flat terrain and exports to multiple hydrologic engines. Storm Injector is a design storm hydrology tool that automates application of Australian Rainfall & Runoff 2019 design storms and supports RORB, WBNM, XP-RAFTS, URBS, and HEC-HMS as hydrologic engines, with Monte Carlo modelling, ensemble temporal patterns, climate change factor modelling, and tight TUFLOW integration.
CSS monetizes through a hybrid of professional services fees for consulting projects and annual subscription licensing for software (cloud, single-user USB, and network USB dongle tiers), with bundled discounts when both products are purchased together. A free Viewer, free trials, and an online Storm Injector Fundamentals training course form a freemium PLG layer. The company is privately held, employs approximately 11 staff in its Sydney CBD headquarters, and operates primarily in Australia with limited international software support extending to New Zealand.
Catchment Simulation Solutions firmographics
Firmographics- Name
- Catchment Simulation Solutions
- Legal name
- Catchment Simulation Solutions
- Website
- https://csse.com.au
- Company type
- Private
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Catchment Simulation Solutions is a Sydney-based specialist consultancy and software vendor providing flood, drainage, and water resources services to Australian local government, state agencies, and private developers, powered by its proprietary CatchmentSIM and Storm Injector hydrologic modelling products.
- Ownership category
- akta.pro rank
Catchment Simulation Solutions industry classification
Industry- Product category
- Flood and Drainage Engineering Consulting
- NAICS
- Custom Computer Programming Services (541511), Computer Systems Design and Related Services (54151), Geophysical Surveying and Mapping Services (54136)
- SIC
- Services-Computer Programming, Data Processing, Etc. (7370), Services-Computer Integrated Systems Design (7373)
- akta.pro primary industry
- Flood Risk Modeling, Mapping & Forecasting (Hydrology/Hydraulics, Digital Twins) (EUANAEAH)
- akta.pro secondary industries
- Water Quality & Watershed/Hydrologic Modeling (SWMM/HEC-RAS, Flood/Runoff/Nutrient) (EUAHAKAF), Combined Sewer Overflow (CSO) Control & Compliance (Storage, Separation, Treatment) (EUANAEAG)
Keywords
Where Catchment Simulation Solutions is headquartered
LocationHeadquarters
- HQ city
- Sydney
- HQ country
- Australia
- HQ region
- Oceania
Offices1 record
Markets served
Catchment Simulation Solutions business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Technology or R&D, Operations, Marketing or Sales
Revenue model
- Flood and Drainage Consulting Services: Consulting services including floodplain management studies, flood impact assessments, water resources studies using eWater Source software, peer reviews, and expert witness services for legal cases. Primarily serves local government, state agencies, and private developers in Australia.
- Software Licensing (CatchmentSIM and Storm Injector): Proprietary hydrologic modelling software sold as subscription products with license setup fees. Available in cloud license, single user USB dongle, and network USB dongle formats. Bundled pricing available when both software products are purchased together.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Annual | Cloud License - subscription-based with remote access |
| Subscription | Annual | Single User USB Dongle License |
| Subscription | Annual | Network USB Dongle License |
| Hybrid | Annual | Bundled Software Pricing |
| Freemium | Others | Free Viewer Software |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels5 records
Catchment Simulation Solutions product offering
Product offeringCore offering
Catchment Simulation Solutions (CSS) is a specialist consultancy and software provider focused on flood and drainage engineering. The company develops and licenses proprietary software products (Storm Injector and CatchmentSIM) while also delivering expert consulting services in floodplain management, flood impact/risk assessment, water resources, peer review, and expert witness work for government agencies, developers, and engineering professionals.
Product overview
Catchment Simulation Solutions offers two core software products: Storm Injector and CatchmentSIM. Storm Injector is a design storm modelling tool that automates the process of applying Australian Rainfall & Runoff design storms and PMP methods with various hydrologic models. CatchmentSIM is a GIS-based terrain analysis system that automatically delineates catchments, calculates hydrologic properties, and creates run files for other hydrologic models. Together, these tools provide a comprehensive workflow for flood modelling, with CatchmentSIM handling terrain analysis and model setup, and Storm Injector managing design storm generation and analysis. Both products are available as subscription-based software with cloud, single user USB dongle, and network USB dongle license options.
Differentiator
Problem solved
Functional benefit
Products and services
- Storm Injector
- CatchmentSIM
- CSS Licence Administration Portal
- Floodplain Management Consulting
- Flood Impact and Risk Assessment
- Water Resources Consulting
- Peer Review Services
- Expert Witness Services
Quantifiable outcome
- Completed 40+ government-funded flood studies with high repeat project rate
- +1 more outcomes
Companies that use Catchment Simulation Solutions
Customer profileNamed customers2 records
Segments4 records
Ideal customer profiles3 records
Catchment Simulation Solutions technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration12 records
Feature7 records
Catchment Simulation Solutions partnerships and signals
Strategic signalPartnerships
Seven partnerships are on record, tiered core.
- TUFLOWcoreStorm Injector has efficient TUFLOW integration via an internal TS1 output engine. Storm Injector includes tools to analyse results from various temporal patterns and minimise the number of TUFLOW simulations required, including focus location statistical analysis of commonly adopted temporal patterns.
- WBNM (Watershed Bounded Network Model)coreStorm Injector integrates with WBNM for hydrologic modelling. The software supports the WBNM slim engine and can export metafiles for hydrograph analysis. Verified against WBNM 2017 and 2020 producing comparable results.
- RORBcoreStorm Injector integrates with RORB hydrologic model via command line version. Supports RORB 6.45 and 6.52 with pre-burst modelling using GSAM/Jordan temporal patterns. Verified to produce near identical results.
- XP-RAFTScoreStorm Injector integrates with XP-RAFTS hydrologic model. Supports both pre-2018 and 2018 versions of RAFTS. Verified to match RAFTS results precisely when routing increments are properly configured.
- URBScoreStorm Injector integrates with URBS hydrologic model for catchment simulation and design storm analysis.
- HEC-HMScoreStorm Injector supports HEC-HMS integration (v4.8+). Requires DSSVue (v3.2+) and HEC-HMS to be installed. Added to support usage outside Australia including New Zealand with HIRDS rainfall data and temporal patterns.
- Australian Bureau of Meteorology (BoM)coreStorm Injector automatically downloads IFD (Intensity-Frequency-Duration) data from Bureau of Meteorology. ARR Data Hub integration provides temporal patterns, areal reduction factors, pre-burst depths, and climate change factors.
Scale indicators2 records
Recent moves6 records
Expansion highlights4 records
Catchment Simulation Solutions competitors and assessment
Company assessmentBroad incumbents
- WSP: Global professional services firm with a large Australian water and environment practice delivering floodplain management, flood impact assessments, and water resources studies that directly compete with CSS consulting services.
- BMT Group: Global maritime and water engineering consultancy with significant floodplain management and coastal modelling capability. Competes with CSS for Australian government flood study contracts and offers overlapping hydrologic and hydraulic modelling services.
- Aurecon: Asia-Pacific engineering and infrastructure advisory with substantial water resources and flood management practice in Australia. Competes for government and developer-led flood study work and has in-house hydrologic modelling capability.
- Jacobs: Global engineering consultancy with significant Australian water and environmental practice delivering flood studies, water resources, and climate resilience projects that overlap with CSS's service portfolio.
- DHI: Danish water modelling specialist behind the MIKE software suite (MIKE 11, MIKE 21, MIKE FLOOD). Competes with CatchmentSIM and Storm Injector at the global hydrologic and hydraulic modelling software level, with growing presence in Australia.
- Cardno (now part of Stantec): Australian-origin engineering consultancy with significant floodplain management, water resources, and environmental services that competed with CSS for government and developer hydrology work prior to its Stantec acquisition.
Regional players
- SMEC: Australia-headquartered engineering consultancy (part of Surbana Jurong) with strong water resources and floodplain management capability. Competes with CSS for government-funded flood studies across Australia and the Asia-Pacific region.
Direct peers
- eWater: Australian not-for-profit developing Source, the national water resources modelling platform. CSS uses eWater Source in its water resources consulting practice and is a partner of eWater in delivering Barwon-Darling and Hawkesbury-Nepean modelling projects.
- TUFLOW: Developer of TUFLOW, the dominant 1D/2D hydraulic flood modelling software used alongside Storm Injector in Australian flood studies. CSS integrates deeply with TUFLOW but competes indirectly for engineering software spend and project workflow ownership.
Emerging players
- Kisters: German software vendor offering hydrology, meteorology, and water resources tools (including K.Hydrology and WISKI). Competes in the hydrologic modelling software category that Storm Injector and CatchmentSIM address.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
Catchment Simulation Solutions social profiles
Digital presenceCatchment Simulation Solutions financial estimates
Financial estimateRevenue estimate
Valuation estimate
Catchment Simulation Solutions leadership team
Management profileNumber of profiles
Catchment Simulation Solutions funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Catchment Simulation Solutions M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Catchment Simulation Solutions
What does Catchment Simulation Solutions do?
Catchment Simulation Solutions (CSS) is a specialist consultancy and software provider focused on flood and drainage engineering. The company develops and licenses proprietary software products (Storm Injector and CatchmentSIM) while also delivering expert consulting services in floodplain management, flood impact/risk assessment, water resources, peer review, and expert witness work for government agencies, developers, and engineering professionals.
Is Catchment Simulation Solutions a public or private company?
Catchment Simulation Solutions is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Catchment Simulation Solutions founded?
Catchment Simulation Solutions was founded in -1. It employs 11 to 50 people.
Where is Catchment Simulation Solutions based?
Catchment Simulation Solutions is headquartered in Sydney, Australia, in the Oceania region.
How does Catchment Simulation Solutions make money?
Two revenue lines are on record. Flood and Drainage Consulting Services are the primary driver. The others are software Licensing (CatchmentSIM and Storm Injector).
Who are Catchment Simulation Solutions's main competitors?
Broad incumbents on record are WSP, BMT Group, Aurecon, Jacobs, DHI and Cardno (now part of Stantec). SMEC is listed as a regional player. Direct peers are eWater and TUFLOW. Kisters is listed as an emerging player.
Does Catchment Simulation Solutions have an API?
No public API is recorded for Catchment Simulation Solutions.
What industry is Catchment Simulation Solutions in?
Catchment Simulation Solutions's product category is Flood and Drainage Engineering Consulting. Its primary akta.pro industry code is EUANAEAH, Flood Risk Modeling, Mapping & Forecasting (Hydrology/Hydraulics, Digital Twins), with a secondary code of EUAHAKAF, Water Quality & Watershed/Hydrologic Modeling (SWMM/HEC-RAS, Flood/Runoff/Nutrient). Its NAICS code is 541511 and its SIC code is 7370.