TECHNICAL RESOURCES

Stormwater Management Review and Approvals
The 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.

• Stormwater Management Planning and Design Manual (Ministry of the Environment, March 2003) 
• Technical Design Guidelines, Standards and Policies for Siltation and Erosion Control
• Erosion and Sediment Control Standard Drawings - Rock Check  - Silt Fence Standard - Sediment Basin Outlet
• Dry pond criteria check form
• Wet pond criteria check form
• Wetland criteria check form
• Hybrid wet pond/wetland criteria check form
• Erosion control criteria check form
  
  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 Hydrology (MacLaren Study) - Report Text 
• Watershed Hydrology (MacLaren Study) - Basin Figure
• Watershed Hydrology (MacLaren Study) - Appendix: Design Flows  
                

Regulatory Review and Permits
The NVCA administers Ontario Regulation 164, which requires 
permission to alter a waterway or wetland, place or remove fill from 
designated locations or construct a structure in an area susceptible 
to flooding. Offences can result in fines up to $10,000 and orders 
for removal or restoration of a site. The NVCA also works in close 
partnership with Municipal, Provincial and Federal enforcement staff 
on issues in the watershed.

• Condensed Version of Ontario Regulation 164   (1990) 

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 (MNR). The MNR 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.

• Self Help Guide - Temporary Flood Protection using Sand Bag Dikes 
  and Walls (2003)
                                                                          

      Copyright NVCA