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

Town of The Blue Mountains

On behalf of the Town of The Blue Mountains, we would like to thank you and your organization for your specialized technical support in a peer review capacity over the past four years… Your team not only provided timely review of all drainage related features of development applications but introduced updated municipal design criteria addressing changing climatic conditions. By unraveling the weather factors that impact snow melt potential, your team has helped the Town better understand how to be proactive in developing sustainable infrastructure.

Your team’s support assisted in keeping Town’s development projects moving forward efficiently. In addition to this, the review and introduction of updated municipal design criteria and construction standards addressing changing climatic conditions, continues to ensure the Town of The Blue Mountains fulfills its mandate for sustainable development.

Reg Russwurm MBA, P. Eng.
Director of Engineering and Public Works
Town of The Blue Mountains
February 3, 2014

Sustainable Buildings Canada

Sustainable Buildings Canada (SBC) has worked closely with Greenland Consulting Engineers (Greenland) as part of the Savings By Design program offered by Enbridge Gas Distribution. The program features an integrated design workshop that exposes builders and developers to the potential environmental and energy performance benefits that can be achieved through a holistic planning process. This includes identifying alternative approaches to site sustainability including low impact development and storm water management.

Inherent in the integrated design process is the need to access experienced and highly qualified individuals and organizations that can identify potential alternative solutions. SBC has a very capable roster of consultants that represent the core expertise required for this kind of expertise. Greenland is one of those organizations, providing critical input related to storm water management, low impact development and site sustainability.

Greenland consulting staff are all extremely knowledgeable and up to date on the various issues related to storm water management and low impact development and have always provided that expertise in a professional manner, recognizing the need to be sensitive to both the needs of the developers and the desire to improve environmental performance. It has been a great pleasure to work with Greenland and we look forward to doing so in the future.

Michael Singleton
Executive Director
Sustainable Buildings Canada
November 1, 2013

Town of Innisfil

Re: Erosion Control and Advanced Sedimentation Pilot Project

On behalf of the Town of Innisfil, I would like to extend my sincere thanks to Greenland International Consulting Ltd. for their excellent work in completing the Erosion Control and Advanced Sedimentation Pilot Project for the Town of Innisfil, funded in part by the Federation of Canadian Municipalities. This project is a first step in broad-scale implementation of innovative stormwater management technologies in the Lake Simcoe Watershed to address on-going phosphorus and sediment concerns within the Lake.

Over the course of the three-year pilot project, Greenland studied the effectiveness of the Clearflow Group’s Advanced Sedimentation Technologies at an active development site in Innisfil. The project analyzed the performance of Clearflow’s Gel Flocculant Blocks and Treated Geo-Jute at removing fine sediments and nutrients at three stormwater management facilities that discharge to Lake Simcoe. These particles, and the associated nutrients and heavy metals, are traditionally not being removed by conventional stormwater management facilities and cause negative impacts downstream. The results of the project will help Innisfil and other municipalities and agencies to reduce sediment load from entering the environment as a result of construction activities.

As the lead consultant, Greenland coordinated with the Town staff, contractors, sub-consultants and the developer to ensure that open lines of communication were maintained and questions and issues raised were responded to promptly. The Greenland Team’s level of professionalism and thoroughness over the course of the project was valued by the Town.

Glen Switzer
Development Engineer
Town of Innisfil
July 8, 2022

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