Study Overview

STUDY OVERVIEW

INTRODUCTION

The City of Greater Sudbury (City) is embarking on a major comprehensive review of its existing official plans and the preparation and adoption of a new Official Plan under the Planning Act for the newly amalgamated City.

As part of the plan review process, a number of background studies are to be carried out to provide technical information on various critical issues that are to be addressed in the policies and programs of the new Official Plan. The Stormwater Study is one of these background studies.

STUDY PURPOSE

The Stormwater Background Study will:

Analyze and identify critical stormwater management (SWM) requirements for the next 20 years

Identify problem areas and develop a prioritized list of areas requiring further study

Prepare an Urban Drainage Policy for the City

City of Greater Sudbury Stormwater Background Study STUDY PROCESS

STEP 1 Compile Basin Characteristics

STEP 2 PHASE 1 Problem Identification: REVIEW EXISTING INFORMATION • Flood Control • Water Quality PUBLIC OPEN HOUSE STAKEHOLDER GROUPS SESSION #1 • Erosion WE ARE HERE • Natural Resources • Growth

STATISTICAL ANALYSIS • Analyse Precipitation Data PHASE 2 • Establish Update Rainfall Intensity Curve and STATISTICAL ANALYSIS Design Storm for the City • Review Historical Impact of Flooding on Dams

PROBLEM ASSESSMENT PROBLEM ASSESSMENT Existing Areas Growth Areas • Evaluate/Screen SWM Tools and Guidelines • Evaluate/Screen SWM Tools and Guidelines PHASE 3 • Identify SWM Strategy • Identify SWM Policies SWM STRATEGIES • Identify Future Studies • Identify Future Studies • Identify SWM Opportunities and Prioritize Mitigating Measures

POLICY DEVELOPMENT PHASE 4 Identify Guidelines and Potential SWM Tools • Feasibility Screening POLICY DEVELOPMENT • Design Storms/Standards

OFFICIAL PLAN POLICY OPTIONS PHASE 5 AND SWM POLICIES PUBLIC OPEN HOUSE PUBLIC OUTREACH OR DEVELOPMENT SESSION #2 • Input to Long-Term Financial Plan

City of Greater Sudbury Stormwater Background Study KEY ISSUES

DEVELOPMENT OF CONSISTENT CITY-WIDE THE STUDY WILL STORMWATER MANAGEMENT STRATEGIES

Existing watersheds will be characterized Result in a SWM plan that will support sustainable economic growth and diversification Water quality and quantity objectives will be related to overall watershed objectives: drinking water supply, Be founded on meaningful public input and stakeholder fisheries, recreation, flood control, infrastructure (sewers input (public meetings) and facilities) requirements, agriculture, etc. Recognize public sentiment and values Existing problem areas - potential retrofits and Provide guidance for meeting the water quality and opportunities will be identified and prioritized quantity objectives, through the identification and For urban growth - Urban drainage policies and master prioritization of future SWM studies planning requirements will be developed, to be used as a Identify potential mitigation measures for priority water basis for all future stormwater management studies within bodies the City

Policies and programs will be identified for stormwater quality and quantity management

City of Greater Sudbury Stormwater Background Study BASINS IN THE CITY OF GREATER SUDBURY

BASINS AND WATERSHEDS

There are six major drainage basins Each drainage basin that intersect the City of Greater contains many Sudbury boundary including the watersheds and sub- Spanish River, Onaping River, watersheds. Each Vermillion River, Wanapitei River, watershed within a Lake Panache and Lake Nipissing specific drainage basins. basin contributes to the runoff (quantity

y rt R d R r i iv B a v e la L e r nc Onaping River Upper r h W e R and quality) of the a M iv ka o er mi n R tre ive er a r r l Vermilion iv R R e iv n v overall basin. Some a i e m r o R W e

b o M k on a t watershed examples rea M l R iv er

e are provided.

n M

a o

t e W s rm a ili a E o n n a R p iv i e t r e i

V i Spanish River e v rm e i r lio S n p R a iv W n e i r a s k h

R o R n i A i v a g v Onaping River e s n e O r s r W e n a in s a r u a ve R R p x n i iv i S v e n a e g p a r r i b k R t e

l e e i i v e Vermilion River s R r e Lake Nipissing Lower Wanapitei River r i C v S e tu Se n r rg Tomiko River r h pent Ri eon ver o R J iv Veuv er Vermilion Wanapitei River e River t River Serpen

iver W sh R a ent River pani n Serp S ap it Wo ei lsel R ey R iv ive er r Lake Panache Pickerel Riv er W North Channel olf River Flow direction Key River Pickerel River

Flow direction Spanish River, Lake Nipissing City of Greater Sudbury Stormwater Background Study PRIORITIZING WATERSHEDS

EVALUATION CRITERIA

Primary Beneficial Uses of Water Identified Municipal and domestic water supplies (lake and well water) Recreational, fisheries, agricultural, industrial uses Existing and Future Land Uses Identified Residential, agricultural, mining, forest, wetlands Growth potential through planning status and existing Official Plan Flooding history within the Watershed Located within the watershed which impact on the assimilative capacity and may impact on the water quality of the downstream receivers Sewage treatment outfalls, on site (septic) systems Industries (i.e. mine tailings) Located within the watershed which may impact runoff quality CITY OF GREATER SUDBURY Existing water quality issues WATER WORKS FACILITIES As identified by reports and stakeholder inputs

City of Greater Sudbury Stormwater Background Study PRIORITY WATERSHEDS

NINE PRIORITY WATERSHEDS HAVE BEEN IDENTIFIED

Priority Watersheds:

Have significant existing water quality problems associated with urban storm

ROBERTS drainage; or RIVER

Have significant stormwater conveyance KUKAGAMI

problems caused by urbanization; or UPPER VERMILION

WANAPITEI Have significant development pressure, which RAPID ONAPING RIVER NELSON RIVER may increase the potential for both water SANDCHERRY quality and quantity issues. CAPREOL

SKEAD 14

1 VAL THERESE HANMER

2 STURGEON LEVACK 4 3 RIVER

Priority Watersheds in the City of Greater Sudbury: ONAPING VAL CARON WHITSON BLEZARD VALLEY RIVER BAILEY'S 15 CORNER 5 EMERY DOWLING CHELMSFORD CREEK

McCREA HEIGHTS FALCONBRIDGE East Wanapitei River 6 LEGEND: GARSON AZILDA Municipal Drains CAMERON 16 Priority Watershed 17 7 Emery Creek 18 DAM LEGEND 30 SPRING 1 - MOOSE CR 3 MID-VERMILION 8 CREEK 2 - STATHCONA DAM 19 3 - MOOSE CR 2 4 - MOOSE CR 1 WHITEWATER CONISTON 5 - WINDY LAKE DAM Whitson River 20 WAHNAPITAE COPPER CLIFF 29 6 - GOUDREAU UPPER 24 7 - STOBIE DAM 22 25 RAMSEY 8 - WHITEWATER DAM JUNCTION 26 9 - FAIRBANK CR FAIRBANK 10 - FAIRBANK CR LOWER 23 9 CREEK 11 - ETHEL LAKE Whitewater CREAN LIVELY RED 12 - FAIRBANK CR LOWER HILL VERMILION 10 21 DEER 13 - WABAGISHIK GENERATING STA. SPANISH 14 - WANAPITEI DAM 27 15 - WHITSON LAKE DAM RIVER 11 28 16 - MALEY DAM NAUGHTON 17 - FROOD DAM VICTORIA ST CLOUD Ramsey MINE 12 18 - NICKELDALE DAM WORTHINGTON LOWER NEPEWASSI 19 - CLARABELLE HIGH WHITEFISH FALLS 20 - LADY MACDONALD LAKE DAM JUNCTION 21 - KELLY LAKE WEIR CREEK 22 - COPPER CLIFF CREEK Upper Junction 23 - ROBINSON LAKE DAM EAST 24 - RAMSEY LAKE DAM 25 - NEPAHWIN LAKE DAM WANAPITEI 26 - LAKE LAURENTIAN PANACHE 27 - GRANT LAKE 28 - McFARLANE LAKE 29 - CONISTON DAM Lower Junction 30 - STINSON DAM 13 Panache Onaping PANACHE

City of Greater Sudbury Stormwater Background Study PRIORITY WATERSHED EXAMPLE

UPPER JUNCTION CREEK WATERSHED LAND USE INFORMATION

EXISTING LAND USE OFFICIAL PLAN LAND USE DESIGNATIONS

City of Greater Sudbury Stormwater Background Study STORMWATER MANAGEMENT STRATEGIES

TYPICAL STORMWATER MANAGEMENT STRATEGIES WILL ADDRESS WATER QUANTITY AND QUALITY ISSUES

Water Quantity Issues - Typical Strategies Include: Improve conveyance by upsizing sewers and culverts Dykes and flood protection Reduction of peak flows by storing stormwater in ponds Reduction of erosion by releasing stormwater over longer periods of time Source control - reducing the rate and volume of runoff on site - through such things as rain barrels, roof storage, site grading, retention / use / infiltration of stormwater on site, increasing vegetation through forest canopy restoration Water Quality Issues - Typical Strategies Include: Settling pollutants in stormwater ponds Filtering stormwater though swales, buffers, etc. Non-structural approaches, and stormwater best management practices Site controls for impervious high use areas, such as oil-grit separators, filtering or containment Regulatory and public information / education approaches regarding use of herbicides, pesticides, and fertilizers. Education regarding improper dumping and disposal City of Greater Sudbury Stormwater Background Study THE NEXT STEPS

Comments received from this Public Open House Session will be considered along with those received from stakeholder groups.

The existing basin conditions, priority watersheds, priority urban water bodies, mitigating measures for specific water bodies and priority of future SWM studies will be identified for public review and comment later in the study.

In addition, an Urban Drainage Policy will be developed for the City.

You are encouraged to contact any of the Project Team members from the City or Earth Tech Canada at any time throughout the study if you have any questions or concerns:

Chris Redmond, P. Eng. Paul Baskcomb, MCIP, RPP Ron Norton, P.Eng. Project Manager Manager of Community and Strategic Planning Coordinator of Technical Services Earth Tech Canada Inc. City of Greater Sudbury City of Greater Sudbury 1040 Lorne Street South, Unit 1 P.O. Box 5000, Station “A” P.O. Box 5000, Station “A” Sudbury, Ontario, P3C 4R9 200 Brady Street 200 Brady Street Phone: (705) 674-8343 Sudbury, Ontario P3A 5P3 Sudbury, Ontario P3A 5P3 Fax: (705) 674-1694 Phone: (705) 671-2489, Ext. 4306 Phone: (705) 671-2489, Ext. 2362 E-Mail: [email protected] Fax (705) 673-2200 Fax (705) 673-5171 E-mail: [email protected] E-mail: [email protected]

City of Greater Sudbury Stormwater Background Study