Neither captures diurnal changes – e.g. Dissolved Oxygen

Extreme data points captured are usually treated as outliers

Model Calibration – Challenges due to sparse sampling points

Response of watershed to different types of precipitation

Traditional Sampling Limitations

(grab sampling, event sampling)

0

100

200

300

400

500

Jun/11 Jul/11 Aug/11 Sep/11 Oct/11

Date

To

tal

Su

sp

en

ded

So

lid

s

(mg

/L)

Exploring options to bridge the gaps!!

Using multi-parameter water quality sondes

Measuring key indicator parameters

Longer deployments – perhaps year-round

pH

Dissolved oxygen

Turbidity

Conductivity

Chloride

Water level

Water temperature

What is Real-Time Water Quality Monitoring

Hydrolab

Data Logger

Cellular network

Database

Happy water

resources tech!

Solar panel

Hydrolab

Equipment

enclosure

Housing pipe

(exchanged monthly)

Battery

Modem

Data logger

Funded by the Region of Peel under Climate Change Program

Credit River in Orangeville

Installed:

August 2012

Catchment:

Urban: 45%

(Orangeville)

Rural: 36%

Natural: 17%

Features:

• d/s of Island

Lake

• d/s of Town of

Orangeville

• d/s of waste

water treatment

plant

Installed:

October 2013

Catchment:

Rural: 44%

Urban: 28%

(Orangeville,

Caledon)

Natural: 23%

Features:

• WQ entering

the Niagara

Escarpment

Credit River at Cataract Falls

Installed:

February 2010

Catchment:

Rural: 33%

Urban: 20%

(Orangeville,

Georgetown,

Brampton)

Natural: 18%

Features:

• WQ of Credit

before City of

Mississauga

Credit River at Old Derry Road

Installed:

March 2011

Catchment:

Rural: 42%

Urban: 36%

(Orangeville,

Georgetown, Brampton,

Mississauga)

Natural: 21%

Features:

• WQ of entire Credit

watershed

• City of Mississauga

• Data used for Lake

Ontario modeling

Credit River at Mississaugua Golf and Country Club

Installed:

October 2013

Catchment:

Rural: 52%

Natural: 23%

Urban: 22%

(Erin, Hillsburgh)

Features:

• Most pristine

WQ

• Potential

development

in Erin and

Hillsburgh

West Credit River at Belfountain CA

Installed:

September 2013

Catchment:

Urban: 30%

(Acton and

Georgetown)

Rural: 29%

Natural: 29%

Features:

• Drains part of

Niagara

Escarpment

• d/s waste water

treatment plants

(Acton and

Georgetown)

Silver Creek at Willow Park

Installed:

September 2013

Catchment:

Rural: 67%

Urban: 25%

(Brampton)

Natural: 8%

Features:

• WQ pre- and

post-

residential

development

Huttonville Creek at Lionhead Golf and Country Club

Installed:

November 2013

Catchment:

Rural: 56%

Urban: 37%

(Brampton,

Mississauga,

Halton Hills)

Natural: 7%

Features:

• WQ pre- and

post- industrial

and residential

development

Levi Creek at Derry Road

Installed:

July 2011

Catchment:

Urban: 69%

(Brampton)

Rural: 27%

Natural: 4%

Features:

• WQ post-

intensive

residential

development

• Developments

with and without

SWM/WQ

control features

• Redside Dace

Fletcher’s Creek at Second Line

Installed:

November 2013

Catchment:

Urban:89%

(Mississauga)

Rural: 9%

Natural: 2%

Features:

• Drains into

Rattray Marsh

• Highly

urbanized

• No SWM or

WQ control

features

Sheridan Creek at Clarkson Road

Installed:

September 2010

Catchment:

Urban: 87%

(Mississauga)

Rural: 10%

Natural: 3%

Features:

• Residential

development

with no SWM

or WQ control

features

Cooksville Creek at King Street

Over to Amanjot