INTEGRATED SCIENCE AND WATERSHED MANAGEMENT SYSTEM (ISWMS™)

Real-time, probabilistic flood and low-flow intelligence forecasting and mapping designed for operational decision-making at scale.

Unlike conventional hydraulic modeling workflows, ISWMS™ combines ML-based probabilistic forecasting with rapid mapping, reducing time-to-insight from weeks to hours.

  • Operational forecasts with uncertainty: supports real-time situational awareness and planning (including multi-scenario climate inputs where applicable).
  • Fast, actionable mapping outputs: translates flow forecasts and design flows into flood risk intelligence that can be communicated visually.
  • Built for complex engineering applications: supports infrastructure owners, emergency management, and resource/industrial operators.


Trusted since 1999 — Supporting operations for municipalities, conservation authorities, emergency management programs, and resource sector clients across Canada.

What ISWMS™ delivers

Modern watershed management requires forecasts that are not only timely, but also transparent about uncertainty and easy to act on. ISWMS™ integrates forecasting, hydrologic context, and mapping-oriented outputs to support decisions across flood response, drought/low-flow operations, and long-term planning.

Capabilities:
 
  • Probabilistic flow forecasts — localized, uncertainty-aware predictions
  • Flood and low-flow decision support — real-time operational view
  • Flood-frequency analysis (FFA) — return-period design flow context
  • Map-ready risk intelligence — web-ready visuals and decision outputs


Current platform capabilities



ISWMS™ v3 (Operational) — Machine-learning flow forecasting + FFA
 
  • Incorporates a Temporal Fusion Transformer (TFT)-based machine-learning model to generate hydrometric flow forecasts across North America.
  • Trained on an extensive archive of flow measurements from thousands of gauging stations, integrating:
    • real-time hydrometric observations
    • climate inputs
    • catchment characteristics
  • Produces localized probabilistic flow predictions to support operational decisions.
  • Includes Flood-Frequency Analysis (FFA) functionality to derive return-period basin flows, enabling both real-time forecasting and long-term hydrologic design context. 

See ISWMS™ v3 video (with audio)

ISWMS™ v5 (Prototype / Pilot) — Rapid hydraulic flood mapping with LiDAR-informed modeling
 
  • Addresses a common gap: many regions lack up-to-date, decision-ready flood maps due to the cost and time required for conventional hydraulic modeling.
  • Adds a computationally efficient hydraulic flood mapping approach designed to translate forecasted/design flows into inundation extents that can be rendered in web-based map products.
  • Evaluated using a LiDAR-based open-source mapping database and assessed against a calibrated, validated, professionally sealed hydraulic model for a real river system context.


Validation and quality assurance



Validation highlights:
 
  • Where validated: Mattagami River system / City of Timmins, Ontario
  • Compared against: Calibrated, validated HEC-RAS 1D model sealed by a professional engineer
  • Events tested: 25-, 50-, and 100-year return period floods; Timmins Storm (regulatory) flood event
  • How evaluated: Flood extent comparison using 9 statistical performance measures
What this means for users: Confidence-aware outputs and decision support—not just a single deterministic line.

Limitation acknowledgment: Forecast skill varies by basin data availability and climate input quality. ISWMS™ outputs are decision-support tools and do not replace site-specific engineering assessments where required.





Applications

Resource and industrial operators (mining, oil sands, etc.)
  • Operational risk management for flood/erosion susceptibility affecting facilities, access routes, and site infrastructure.
Utilities + hydropower
  • Flow prediction for operational planning, asset protection, and optimization of hydropower operations.
Emergency management + public safety
  • Flood early warning and operational response support for vulnerable communities, including flood-prone settlements and remote regions.
Infrastructure owners and corridors
  • Risk intelligence for:
    • Wastewater treatment plants impacted by floodplains (including CSO storage/overflow contexts).
    • Road/bridge crossings and culverts supporting asset management programs.
    • Transportation corridors susceptible to flash flooding.
    • Pipeline/telecommunications crossings affected by erosion and extreme flows.
Consulting and planning
  • Support for environmental assessment planning and design for corridors and facilities; technical inputs that support stakeholder engagement contexts where required.


Deployment and governance
 
  • Designed to support operational usage with monitoring and controlled access.
  • Supports defensible workflows by documenting inputs, assumptions, and uncertainty.


To explore how ISWMS™ supports operational flood and low-flow decision support, contact us or request a demonstration.
 

Updated: January 7, 2026
Greenland International Consulting Ltd.



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Client Testimonials

The City of Waterloo

As a Senior Project Engineer (Water Resources) for the City of Waterloo, I would like to extend my appreciation to Greenland Consulting Engineers for providing exemplary EA planning, design, contract administration and construction inspection services for the Pond #53 Sediment Removal/Reuse and Retrofit Project.
 
This project was an important undertaking for the City which consisted of: the removal of 360m3 of sediment for reuse in a City owned boulevard area; removal of all additional sediment (approx. 3,000m3) from the SWMF permanent pool and forebay area to improve its operation, implementation of the retrofit design including improved maintenance access and proactive management of many unforeseen conditions throughout the duration of the project. This project also included significant logistical challenges with respect to the coordination of public access for area residents and businesses, and providing workable solutions to implementing the design as intended due to challenging unforseen site constraints.

As the Design Consultant, Contract Administrator and on-site Construction Inspector, Greenland always maintained open lines of communication between the City, Contractor and the affected residents, and promptly responded to all questions and issues raised by the Contractor, the City and the public. Greenland’s attention to detail throughout the entire duration of this assignment helped ensure the project was completed as required.

Jessica Kellerman, P. Eng
Senior Project Engineer - Water Resources
Engineering Services, Design & Construction
City of Waterloo

October 24, 2019
 

Walton Development and Management

The Walton Group of Companies is a multinational real estate investment and development firm concentrating on the research, acquisition, administration, planning and development of strategically located land in major North American growth corridors. With nearly 90,000 acres of land under administration including 22 development projects, Walton is one of North America’s premier land asset managers.

Walton Development and Management L.P. (“Walton”) has retained Greenland International Consulting Ltd. (“Greenland”) to assist with our municipal infrastructure planning and engineering design for several new communities in the County of Simcoe, Ontario including environmental assessments and water resource analysis. Greenland is highly regarded in the industry for their professional approach to the environmental aspects of these projects and state-of-the-art decision support tools (such as CANWETTM) to address climate change adaptation, cumulative watershed impact, and adaptive management such as post-construction performance monitoring. Greenland’s business model is unique and has provided Walton with value-added deliverables through the use of best available science and solution-based methodology. This includes forming a landmark public/private sector phosphorous reduction program to protect a sensitive fishery habitat system within headwaters of the Nottawasaga River Basin for one of Walton’s projects in Simcoe County. Greenland’s CANWETTM model and other in-house stormwater management and climate change impact assessment tools were instrumental for Walton to establish long-term partnerships in this community, including the local municipality, Nottawasaga Valley Conservation Authority and other key stakeholders.

Paolo Sacilotto
General Manager, Simcoe
Walton Development and Management L.P

February 13, 2015
 

Urbantech® Consulting

Hi Mark,

Thanks for the note.  Both files went very well, both approved at LPAT and we are in detail design now.  The input from the Greenland team was greatly appreciated and ensured the hydraulic analysis was accurate. Conservation Halton signed off on the hazard mapping ahead of both LPAT hearings which was huge!

J. David Leighton, C.E.T.
President
Urbantech® Consulting (Markham, Canada)
November 29, 2024
 

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