TRAINING.

Overview

After participating in this course, you will be able to:

• Understand the basics of storm water design and application
• Understand limitations of the standard of practice and examine state of the art engineering
• Apply basic hydrology and hydraulic principles to urban drainage design
• Determine runoff (peak flows and volumes) from rural and urban watersheds
• Gain a solid understanding of stormwater pond design principles and criteria
• Learn to design and analyze stormwater ponds to meet given planning objectives

Description
This workshop provides a detailed review of the complex stormwater management pond design procedures. By participating in this seminar, you will focus on the latest application of sound planning, design, construction and maintenance practices for stormwater management ponds.

The workshop will cover a review of the building blocks of a pond design, such as hydrology and hydraulic calculations that underlie a design. It will provide an overview of the current criteria required by approval agencies, and a review of pond layout components, such as forebays, permanent and active storages, inlets, outlets, and spillways.

Course Outline

• Overview of stormwater management
• Hydrology refresher
• Pond design criteria
• Catchment and site characteristics
• Overview of pond components
• Pond design
• Operation, inspection and maintenance
• Monitoring
• Example of a step-by-step pond design
• Review of computer model software

Who Should Attend
Those involved with the design, construction, operation, maintenance, or review of stormwater ponds, including:
Drainage Engineers • Municipal Engineers • Consultants • Technologists • Developers • Planners • Supervisors • Field and Technical personnel

Special Features:

The course notes will be provided in electronic format and those attending should bring a laptop computer to complete the hands on examples. An extensive list of readily available references will be provided.

Required Resources:

• Standard engineering calculator with scientific functions
• MS Excel spreadsheet, or equivalent
• Environment Canada Intensity-Duration-Frequency (IDF) Files: http://climate.weather.gc.ca/prods_servs/engineering_e.html
• Environment Canada Data Explorer: https://www.canada.ca/en/environment-climate-change/services/water-overview/quantity/monitoring/survey/data-products-services.html

Syllabus

Day 1-Building Blocks of Pond Design

Welcome, Introduction, Workshop Preview, Learning Outcomes & the Assessment Method

Introduction

• Why do we need stormwater management?
• Review of stormwater best management practices & role of ponds
• Review of the latest flood control & stormwater management criteria

A Hydrology Refresher

• Rainfall analyses
• Time of concentration
• Rainfall losses
• Estimating flows using rational & hydrographs methods
• Estimating flows using recorded stream discharges
• Effect of climate change

A Hydraulics Refresher

• Open channel hydraulics
• Pipe hydraulics
• Orifice & weir flows

Pond Design Criteria

• Pond types: dry, wet, and extended detention ponds
• Typical design objectives and approval criteria
• Flood control
• Water quality control
• Erosion control
• Temperature
• Water balance

Workshop Examples

• Rational Method Examples
• Estimating natural flood discharges from records

Day 2- Overview of Pond Design

Catchment & Site Characteristics

• Site drainage area
• Space requirement
• Topography
• Depth to water table
• Depth to bedrock
• Presence of wetlands
• Soil characteristics
• Receiving water(s)
• Need for additional stormwater quantity & quality control
• Needs for extended wet pond
• Decide where on the site the pond is most likely to be located

Overview of Pond Components

• Permanent & active storage
• Inlets
• Forebays
• Outlets
• Spillways
• Embankments
• Spillway & embankment
• Cold climate consideration
• Safety & recreational activities
• Costs
• Legal implications
• Liabilities & risk reduction

Step by Step Review of Pond Design

• Input hydrology and design discharges
• Establish control works
• Iterate for pond volume and configuration
• Effect of water quality features
• Typical layout of stormwater ponds
• Design of inlet
• Design of forebay
• Design of outlets
• Pond routing & sizing

Operation, Inspection & Maintenance

• Municipal input during design review
• Post construction operation, inspection & maintenance for-grass swales, infiltration facilities, artificial wetlands, oil & grit separators, green roofs, ponds

Monitoring

• Baseline monitoring
• Performance monitoring
• Effectiveness monitoring
• Preparation of monitoring plans
• Review of rainfall, flow & water quality monitoring

Questions & Answers & Feedback to Participants on Achievement of Learning Outcomes

Instructor

Jim is a water infrastructure specialist with over 40 years of experience in the fields of water resources and civil engineering. Jim has been responsible for a variety of projects from planning studies that establish design criteria to detailed flood relief designs of complex hydraulic systems and municipal infrastructure.