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Understanding Ontario's capital investment in numerical modelling under the source protection program: 2005-2015

The tragic contamination of Walkerton's water supply in May 2000, and the resulting inquiry by Justice Dennis O'Connor, saw the Province of Ontario begin the long process of properly addressing drinking water security and sustainable water resources management. In May 2002, exactly two
years after the Walkerton tragedy, Justice O'Connor released his second, and final, inquiry report making 22 recommendations to the province for Source Water Protection. The intervening years from 2002 to 2005 saw intense activity from hundreds of people in the coordination of an Advisory Committee
on Watershed-Based Source Protection Planning, a White Paper on Watershed-Based Source Protection Planning, a Technical Experts Committee and an Implementation Committee. These high-level committees within the province, and their resulting reports, became the foundation on which the Source Water
Protection Program and Clean Water Act were designed. In early 2005, the first in a series of multi-million dollar agreements was signed to begin building and implementing the Source Water Protection Program. Within the broader Source Water Protection Program the need for a water quantity risk
assessment framework was recognized and in this way the Water Budget Program was initiated. Although it was not well understood at the time, the Water Budget Program would go on to become a major provincial driver of Water Quantity Policy, Science and Information over the coming decade, overseeing
rigorous technical assessment, model development, peer review and reporting. This presentation highlights the first ten years of numerical model development within the Water Budget Program and offers insights into accomplishments and potential opportunities for improvement going forward.

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The Great Lakes - St. Lawrence Research Inventory is an
interactive, Internet-based, searchable database created as a tool to collect and disseminate
up-to-date information about research projects in the
Great Lakes - St. Lawrence Region.