Integrated Science and Watershed Management System (ISWMS™)

Welcome to the Home Page for the “Integrated Science and Watershed Management System”. This site provides updates about our ecosystem database and decision support analytical tool.

The Integrated Science and Watershed Management System (ISWMS™) was originally developed by Greenland in 2003 as a windows-based Decision Support System (DSS) for stormwater management; hydrological (continuous rainfall and design storm events) modeling; and, Canadian climate flood forecasting capabilities. The ultimate DSS ‘vision’ also included (depending upon the availability of certified open data and timely evolution of new operational platforms) other science-based analytical tools and integration with current Internet and GIS technologies. The ultimate ISWMS™ development goal is to include multi-functional stormwater management; hydrologic; water quality; nutrient trading; hydraulic and contaminant transport; flood forecasting; climate change impact; instream biological health assessment; and, Best Management Practice (BMP) analysis capabilities for river and lake basin management programs and to provide accurate information for water supply, wastewater treatment and flood control infrastructure planning and design initiatives. Greenland is well on its way to achieving the DSS vision!   

In 2003, Greenland was retained to develop the initial version of ISWMS™ as a flood forecasting tool for the 3,200km² Nottawasaga Valley Watershed, located north of Toronto (Canada). It was also used to prepare Subwatershed Management Plans in Southern Ontario. In 2005, Greenland began work on the next ISWMS™ phases, including, an ESRI-GIS operational platform that was integrated with a daily water balance, nutrient and sediment loading model (called CANWET™) and which would also be maintained by the Greenland Group. In 2006, the ISWMS™ program added new technical support partners affiliated with Canadian and U.S. universities. These independent scientists would later assist Greenland as a “science advisory team” for future software phases. The science advisory team has included faculty and researchers from the University of Guelph, University of Waterloo, University of Victoria and Trent University (in Canada), and a U.S. team affiliated with Penn State University.

A.     Completed Phases (2003 - 2016) by the Greenland Group

  • Flood Warning Data Management
 (NOTE: Completed as part-of the original ISWMS™(v.1) phase and being updated further with other partners)
  • Flood Forecasting and Flood Damage Assessments
(NOTE: Completed as part-of the original ISWMS™ (v.1) phase and being updated further with other partners)
  • Hydrologic Analysis for Watershed Planning and Water Resources Design
(NOTE: Completed as part-of the original ISWMS™ (v.1) phase and being updated further with other partners)
  • Integrated Water Balance and Nutrient / Sediment / Pathogen / Bacteria Loadings
(NOTE: Completed as part-of the CANWET™ (v.1 through 4) phases)
  • Groundwater (Shallow System) Modeling
(NOTE: Completed as part-of the CANWET™ (v.1 through 4) phases)
  • Predictive Modeling of Urban and Rural BMP Effectiveness (Incl. Cost-Benefit Analysis)
(NOTE: Completed as part-of the CANWET™ (v.1 through 4) phases)
  • Predictive Modeling of Urban Low Impact Development (LID) Technologies
(NOTE: Completed as part-of the CANWET™ (v.4) phase)
  • GIS (Open Source) Operational Platform
(NOTE: Completed as part-of the CANWET™(v.4) phase)
  • Canadian Climate Change Impact Modeling
(NOTE: Completed as part-of the CANWET™(v.4) phase)
  • Instream Assimilative Capacity Modeling (Incl. Temperature, Dissolved Oxygen and BOD)
(NOTE: Completed as part-of the CANWET™(v.4) phase)
  • Rainfall-Snowmelt and Canadian Climate Change Impact Tool
(NOTE: Completed in 2013 as part-of the latest ISWMS™ phase)
  • Web-based Viewing and GIS (Open Source) Operational Platform
(NOTE: Completed for CANWET™ (v.5) phase)
B.  Current and Proposed Phases (Greenland Group and Other Partners)
  • Watershed Health Database (Canada) and Cumulative Stress Assessment Tool
(NOTE: Initiated in 2015 and includes the integration of “THREATS™”
(or “The Healthy River Ecosystem AssessmenT System”)).
  • Integrated Flood Hazard Identifications and Flood Plain Mapping (Proposed in 2016/17)
  • Watershed Nutrient Trading and Offsetting Management Tool (Proposed in 2016/17)
  • Integrated Web-Open Data and Ecosystem Services Platform (Proposed in 2016/17)
  • Lake Capacity Modeling Tool (Proposed in 2017/18)
  • Low Impact Development Platform (Proposed in 2017/2018)

Since 2003, ISWMS™ and key components (incl. CANWET™) have been used by the Greenland Group for many public sector, public-private partnership, land development and natural resources projects. The projects were also undertaken by qualified Greenland professional engineers and scientists and included:

  • The international award-winning Lake Simcoe Protection Plan (Canada) that was prepared by the Province of Ontario with local First Nations and other partners;
  • Assessing water use stresses within the 15,000 km² Trent-Severn Rivers Basin (Canada) and as part-of a multiple partner Source Water Protection Program;
  • Watershed characterizations and water budget assessments for Source Water Protection Projects by Ontario’s conservation authorities and other stakeholders;
  • Urban growth impact assessments (i.e. water supply, wastewater treatment and master drainage planning focus) and identification of viable infrastructure servicing solutions;
  • Evaluation of existing and future nutrient loads with mitigative options and using an ecosystem target and cost-benefit approach for priority catchments in the Lake Erie and Lake Winnipeg Basin; and,
  • Developing new stormwater management, master drainage planning, flood mitigation and watercourse crossing design standards that had regard for regional climate change factors.   

In 2013, the Greenland Group expanded its software team to include internationally renowned industry partners from Canada, United States and Europe. Thank-you for your interest in the Integrated Science and Watershed Management System (ISWMS™) by the Greenland Group.

Social Media


Client Testimonials

City of Toronto

Mayor David Miller and Members of Toronto City Council extend appreciation to Greenland Group of Companies for your outstanding contribution to the City of Toronto’s Green Roof Technical Advisory Group. As a participant of the City of Toronto’s Green Roof Technical Advisory Board, you have contributed tremendously to its leadership role on climate change and helped support the development of the Toronto Green Roof By-law.

This initiative, the first of its kind in North America, sets the standard in designing sites and buildings across the city that are more environmentally friendly, a key strategy in reducing the effects of climate change.
We thank you for helping our city achieve its vision and goals on climate change – it is this kind of collaboration that makes us proud, prosperous and successful.

Best wishes for continued success.

David Miller
City of Toronto

May 2010

Moriyama & Teshima Architects

On behalf of Moriyama & Teshima Architects, I would like to thank you for your high level of competence and involvement expressed in the design process on the Keele Street Public School Addition and Renovation project… I felt you were integral and instrumental in coming in and taking the project from an ill-fated design…to design completion, tender and the approvals stage. You showed high levels of knowledge and understanding in your field, and your thoroughness and professionalism have led to the success of this project to date. I am thoroughly satisfied in the way you designed the services system, dealt with authorities having jurisdiction, and for your recommendations regarding budgetary concerns.

I would not hesitate in recommending you as a civil engineering consultant on any further project I am involved with.

Gene Ascenzi   B.Arch, OAA, MRAIC, LEEP AP
Project Manager
Moriyama & Teshima Architects

August 25, 2014

County of Simcoe

The County of Simcoe is the upper tier government and planning authority for most of the South Georgian Bay – Lake Simcoe Source Water Protection Region. The County, in partnership with its member municipalities, other levels of government, floodplain management agencies and two (2) conservation authorities, also provides leadership through policy, and actively in the restoration and protection of the environmental health and quality of these watersheds. As you know, in order to comply with, and be environmentally proactive with respect to the Province of Ontario’s “Places to Grow” legislation, the County of Simcoe utilized innovative decision support tools such as Greenland’s CANWET™ model. In 2012, CANWET™ was also used by the County to prepare a “Water and Wastewater Infrastructure Visioning Strategy”. To this day, the information in the Strategy’s final report is used by local municipalities, development interests and other stakeholders as a background reference to help identify sustainable development solutions.
This letter confirms the County of Simcoe's commitment of support which includes initially facilitating the introduction of this landmark international collaboration with all 16 local municipalities, other governments (small and large) and other agencies that partner now with the County of Simcoe on land use planning; infrastructure renewal; and flooding risk/damage reduction initiatives.
As always, I look forward to our continued working relationship with you and your colleagues and the significant benefits these efforts will have for our residents and environment. The County of Simcoe appreciates your efforts towards developing information based decision making tools and we are confident that this project will prove beneficial in our collaborative goal to improve watershed health for all County residents.

Mark Aitken
Chief Administration Officer
The Corporation of the County of Simcoe

October 19, 2015

Corporate Partnerships

Partnerships and Accreditations