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In 1993, the Ontario Ministry of the Environment
and Energy and Ontario Ministry of Natural Resources released three policy documents focusing on integrating water resources management and urban planning:
* Water Management on a Watershed Basis: Implementing an Ecosystems Approach
* Integrating Water Management Objectives into Municipal Planning Documents
These documents heralded a new approach to water management in Ontario. Theyemphasized the need for an increased focus on protecting the natural environment andthe need for stormwater management practices to pay more attention to waterquality and environmental concerns, in addition to addressing traditional water quantityconcerns.
In 1994, the
Ontario Ministry of Environment and Energy (OMOEE) released two practitioners guides to stormwater management planning:
* Stormwater Quality Best Management Practices
* Stormwater Management Practices Planning and Design (SMPPD) Manual
OMOEE SMPPD manual was intended to introduce practitioners to a broad range of stormwater management facilities designed to not only offset the effects of hydrologic changes of urban development on streams and rivers, but also address water quality and erosion impacts. The SMPPD manual also provided detailed guidance on how to design and build multi-purpose facilities and included sections on operations and maintenance and environmental monitoring requirements.
In 2003, OMOE released a new [https://www.ontario.ca/document/stormwater-management-planning-and-design-manual-0 Stormwater Management Planning and Design Manual], which significantly updated and expanded on the 1994 version. The 2003 manual: