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 Collingwood

RE: Town of Collingwood ‘Smart’ Stormwater Project

I would like to thank and recognize GREENLAND® for their leadership role in the above project. Your firm identified the opportunity to work together with other private firms and public sector organizations, together with the support of the Town of Collingwood and the Federation of Canadian Municipalities, to address a growing Concern in communities related to lot-level flood mitigation.

GREENLAND® strategized and implemented, over almost 3 years, the “first-ever in Canada” work plan to mitigate problems of climate-change induced stormwater flooding which impacts many residential, commercial and institutional properties. The innovative project approach monitored 4 different Low Impact Development (LID) approaches for reducing lot-level flooding and their ability to redirect site drainage away from municipal sewer systems. Using innovative real-time (aka ‘Smart’) technologies, GREENLAND® was also able to generate ‘Big Data’ that provided new insights into the effectiveness of these different approaches. The GREENLAND® team’s level of commitment, thoroughness and professionalism was appreciated by the municipality. GREENLAND® maintained open lines of communication with Town staff, contractors, participating residents, and promptly responded to all questions and issues raised by the public.

We commend your firm’s efforts as a pioneer in implementing this project approach.

Sonya Skinner
Acting Chief Administrative Officer
Town of Collingwood
June 2, 2020

Blue Mountain Watershed Trust Foundation

RE: Huntingwood Trail East OLT – Expert Witness Support

On behalf of the Blue Mountain Watershed Trust Foundation (aka ‘Trust’), I would like to extend the Board of Directors’ sincere gratitude to GREENLAND® for its exemplary technical support on the recent Ontario Land Tribunal (OLT) case.

GREENLAND® was retained to develop a defendable, 2-dimensional hydraulic model of the Silver Creek system with many accompanying spills, and in the vicinity of the proposed development. Your firm’s expertise and proficiency with 2-D hydraulic modelling - floodplain management projects were also instrumental in achieving an amicable solution with the developer’s engineering team lead. The solution will now protect residents and property from increased flooding impacts associated with the original subdivision plan (and for only this development phase).

This included your impeccable team to always maintain prompt communication between the OLT parties, and providing staff expertise and support for a concurrent public engagement by the Trust. Your team’s attention to detail and cross-functional collaboration approach was also key to identifying an amicable solution by all parties of the OLT, and as part of an OLT Settlement.

Mark, it was a pleasure to work with GREENLAND® on this file. Thank you also to your team.

Carl Michener
President
Blue Mountain Watershed Trust Foundation
March 29, 2026

Lake Simcoe Region Conservation Authority

The Authority’s mission is to provide leadership in the restoration and protection of the environmental health and quality of Lake Simcoe and its watershed with our community, municipal and other government partners. As a resource management agency, we rely on decision support tools such as Greenland’s CANWET model. It continues to play a key role in informing our watershed management planning decisions in relation to policy development, stewardship priorities and education and communication programs.

As always, I look forward to our continued working relationship with you and your colleagues. The Authority appreciates your hard work, and we are confident that this study will prove beneficial in our collaborative goal to improve the health of the Lake Simcoe watershed.

Michael Walters
Chief Administrative Officer
Lake Simcoe Region Conservation Authority
November 4, 2014

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