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​​​​Technical Guidelines

Development Review Guidelines

The Engineering Development Review Guidelines provide engineering consultants with background information on what the NVCA looks for in stormwater, natural hazard and erosion and sediment control submissions. 

Stormwater Management Review and Approvals

The NCVA engineering department provides technical review of stormwater management reports and engineering plans for municipal site plan approvals, plans of subdivision or condominium. The NVCA has developed a series of submission procedures, technical standards and tools to assist the consulting engineer with the development and submission of reports. Engineers are encouraged to check back here with every new project, as improvements or new tool versions may have been posted.

Phosphorus Loading Development Tool

This online tool provides a generic approach for assessing pre- and post-development phosphorus loadings from new development in the Nottawasaga Valley watershed.

Floodplain Management

New development can be constrained by the existence of floodplains on the site. Where floodplain mapping does not exist, or requires updating, the NVCA usually requests the preparation of a floodplain study to determine the extent of flooding on the development site and to model any proposed waterway crossings.

Watershed Flood Risk Assessment​

in 2018, NCVA conducted a Watershed Flood Risk Assessment for the Nottawasaga Valley with funding from Public Safety Canada’s National Disaster Mitigation Program. 

The study provides NVCA and communities with a better understanding of the extent of damages/risk possible from flooding events. The communities of Alliston, Angus, Collingwood, Creemore, Elmvale and Stayner, in Simcoe County, and Shelburne, in Dufferin County, Ontario, were selected for the study based on the estimated number of potentially affected structures within the floodplain. ​

Flood Forecasting and Warning

The responsibility for dealing with local flood contingency planning in Ontario is shared by municipalities, conservation authorities and the Ministry of Natural Resources and Forestry (MNRF). The MNRF and the NVCA are primarily responsible for operating a flood forecasting and warning system. The Conservation Authorities of the Greater Toronto Area (GTA), have developed a coordinated Flood Forecasting and Warning Service for the municipalities and residents within their collective  watersheds and shorelines of Lake Ontario, Lake Simcoe and Georgian Bay. The purpose of this service is to reduce the risk to life and damage to property by providing local agencies and the public with notice, information and advice so that they can respond to potential flooding and flood emergencies.

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