Municipal Affairs and Environment

Risk-Based Approach (RBA) to Station Assessment

Newfoundland and Labrador’s lakes and rivers are treasured for their many uses, including habitat for fish, recreational opportunities for swimming, boating and fishing, a source of drinking water and their natural beauty. However, many of these water bodies also face different potential sources of stress or pollution which could range from chemicals being dumped into the water, to sediment washing into the water from a construction site or even acid rain. In order to manage and protect water resources, the sources of potential stress or risk to the water bodies must first be identified.

RBA Ranking Method

Environment and Climate Change Canada has developed a tool for the assessment of potential environmental risk to water quality and aquatic ecosystems across Canada, known as the Risk- Based Approach (RBA). The tool combines information on the potential risks to a specific water quality sampling site or watershed, including:

  • Category A: Activities and sources of contamination (e.g. point and non-point sources; proposed future activities and developments; etc.)
  • Category B: Impacts on water quality (e.g. presence of pollutants in water; increasing amount of pollutants in water; persistent contaminants from past pollution events or old buildings; etc.)
  • Category C: Potential impacts on the aquatic ecosystem (e.g. ecosystem sensitivity; presence of vulnerable species or species at risk; recreational or commercial fisheries; etc.)

RBA Category

The RBA tool combines the information within each category to produce a category score (0 to 100) and level of risk (low, medium, high).

Finally, all the data from categories A, B and C, are combined to produce an overall RBA score (0 to 100) and overall categorization of the level of risk to water quality and aquatic ecosystems at the site being considered. For example, if the overall score is 80, then the level of risk to water quality at that site is high.

RBA Table

Results of RBA Ranking Analysis

The map below shows the overall risk rankings for water quality monitoring sites in Newfoundland and Labrador calculated using RBA:

RBA Ranking Results By Region:

LABRADOR (1 of 2) LABRADOR (2 of 2) EASTERN (1 of 2) EASTERN (2 of 2) CENTRAL WESTERN

The table below summarizes the categorical results of the RBA analysis on water quality sites in Newfoundland and Labrador. Results will be updated as changes within the watersheds occur which may impact the level of risk at a station.

LABRADOR

STATION NO.

STATION NAME

STATION TYPE

OVERALL RISK

CATEGORY A

CATEGORY B

CATEGORY C

NF03QC0002

ALEXIS RIVER NEAR PORT HOPE SIMPSON

WQMA

LOW

LOW

MEDIUM

MEDIUM

NF03OA0020

ASHUANIPI RIVER AT FERGUSON BAY

WQMA

LOW

LOW

MEDIUM

LOW

NF03OC0012

ATIKONAK RIVER ABOVE PANCHIA LAKE

WQMA

LOW

LOW

MEDIUM

LOW

NF03OE0033

BIG POND BROOK BELOW BIG POND

WQMA

LOW

LOW

MEDIUM

LOW

NF03OE0037

CACHE RIVER AT TLH

WQMA

LOW

LOW

MEDIUM

LOW

NF03NE0010

CAMP POND BROOK BELOW CAMP POND

REAL TIME

MEDIUM

MEDIUM

MEDIUM

MEDIUM

NF03PB0028

CAPE CARIBOU RIVER AT GRAND LAKE

WQMA

LOW

LOW

MEDIUM

LOW

NF03QA0044

CARTER BASIN OUTFLOW

WQMA

LOW

LOW

LOW

LOW

NF03OE0050

CHURCHILL RIVER 6.15 KMS BELOW LOWER MUSKRAT FALLS

REAL TIME

MEDIUM

MEDIUM

MEDIUM

LOW

NF03OE0001

CHURCHILL RIVER ABOVE UPPER MUSKRAT FALLS

WQMA/REAL TIME

MEDIUM

MEDIUM

MEDIUM

LOW

NF03OE0051

CHURCHILL RIVER BELOW GRIZZLE RAPIDS

REAL TIME

MEDIUM

MEDIUM

LOW

LOW

NF03OD0013

CHURCHILL RIVER BELOW METCHIN RIVER

REAL TIME

MEDIUM

MEDIUM

MEDIUM

LOW

NF03OE0054

CHURCHILL RIVER ENGLISH POINT

REAL TIME

MEDIUM

MEDIUM

MEDIUM

LOW

NF03OE0035

DOMINION LAKE OUTFLOW

WQMA

LOW

LOW

MEDIUM

LOW

NF03QC0001

EAGLE RIVER ABOVE FALLS

WQMA

LOW

LOW

MEDIUM

MEDIUM

NF03OD0011

EAST METCHIN RIVER AT TLH

WQMA

LOW

LOW

MEDIUM

LOW

NF03OB0039

ELROSS CREEK BELOW PINETTE LAKE INFLOW

REAL TIME

MEDIUM

HIGH

LOW

LOW

NF03OA0022

FLORA CREEK BELOW TRANS LABRADOR HIGHWAY

REAL TIME

MEDIUM

MEDIUM

MEDIUM

LOW

NF03OB0040

GOODREAM CREEK 2KM NORTHWEST OF TIMMINS 6

REAL TIME

LOW

LOW

LOW

LOW

NF03PB0029

GRAND LAKE OUTFLOW AT NORTH WEST RIVER

WQMA

LOW

LOW

LOW

LOW

NF03OB0038

JAMES CREEK ABOVE BRIDGE

REAL TIME

MEDIUM

HIGH

LOW

LOW

NF03QA0045

KENAMU RIVER NEAR MOUTH

WQMA

LOW

LOW

LOW

LOW

NF03QA0047

LAKE MELVILLE EAST OF LITTLE RIVER

REAL TIME

LOW

LOW

MEDIUM

LOW

NF02XA0001

LITTLE MECATINA RIVER ABOVE LAC FOURMONT

WQMA

LOW

LOW

MEDIUM

LOW

NF03OE0030

MINIPI RIVER BELOW MINIPI LAKE

WQMA

LOW

LOW

MEDIUM

LOW

NF03PB0025

NASKAUPI RIVER BELOW NASKAUPI LAKE

WQMA

MEDIUM

MEDIUM

MEDIUM

LOW

NF03OE0032

PINUS RIVER ABOVE TLH

WQMA

LOW

LOW

MEDIUM

LOW

NF03NE0009

REID BROOK AT OUTLET OF REID POND

REAL TIME

LOW

LOW

LOW

LOW

NF03NE0011

REID BROOK BELOW TRIBUTARY

REAL TIME

LOW

MEDIUM

LOW

LOW

NF03PB0030

SEAL LAKE AT NARROWS

WQMA

LOW

LOW

MEDIUM

LOW

NF03NG0034

SHIPISKAN LAKE AT OUTLET

WQMA

LOW

LOW

LOW

LOW

NF03PB0032

SUSAN RIVER NORTH OF BEAVER RIVER

WQMA

LOW

LOW

MEDIUM

LOW

NF03NE0012

TRIBUTARY TO REID BROOK

REAL TIME

LOW

MEDIUM

LOW

LOW

NF03NF0013

UGJOKTOK RIVER BELOW HARP LAKE

WQMA

LOW

LOW

LOW

LOW

NF03OB0037

UNNAMED TRIBUTARY BELOW SETTLING POND

REAL TIME

MEDIUM

HIGH

LOW

LOW

NF03OA0019

WABUSH LAKE AT DOLOMITE ROAD

REAL TIME

MEDIUM

MEDIUM

MEDIUM

LOW

NF03OA0017

WABUSH LAKE AT LAKE OUTLET

REAL TIME

MEDIUM

HIGH

MEDIUM

LOW

NF03OD0012

WILSON RIVER EAST BRANCH

WQMA / CABIN

LOW

LOW

LOW

LOW

EASTERN

STATION NO.

STATION NAME

STATION TYPE

OVERALL RISK

CATEGORY A

CATEGORY B

CATEGORY C

NF02ZM0020

BROAD COVE BROOK NEAR ST. PHILLIPS

WQMA / CABIN

MEDIUM

MEDIUM

MEDIUM

LOW

NF02ZL0029

GOULDS BROOK NEAR MAKINSONS

WQMA / CABIN

MEDIUM

MEDIUM

MEDIUM

LOW

NF02ZM0183

KELLIGREWS RIVER AT KELLIVIEW CRESCENT

WQMA / CABIN

MEDIUM

MEDIUM

MEDIUM

LOW

NF02ZM0144

KELLY'S BROOK AT PORTUGAL COVE ROAD

WQMA

MEDIUM

HIGH

MEDIUM

LOW

NF02ZM0184

LEARYS BROOK AT OUTER RING ROAD

WQMA

LOW

LOW

LOW

LOW

NF02ZM0178

LEARYS BROOK AT PRINCE PHILIP DRIVE

WQMA / REAL TIME / CABIN

MEDIUM

HIGH

MEDIUM

MEDIUM

NF02ZM0294

MANUELS RIVER ABOVE MANUELS ACCESS ROAD

WQMA

MEDIUM

MEDIUM

LOW

LOW

NF02ZM0109

MUNDY POND AT OUTLET

WQMA

MEDIUM

HIGH

MEDIUM

LOW

NF02ZK0005

NORTHEAST RIVER NEAR PLACENTIA

WQMA / CABIN

MEDIUM

MEDIUM

LOW

MEDIUM

NF02ZM0365

OUTER COVE BROOK AT CLOVELLY GOLF COURSE

REAL TIME

MEDIUM

HIGH

MEDIUM

LOW

NF02ZM0364

OUTER COVE BROOK BELOW AIRPORT

REAL TIME

MEDIUM

HIGH

MEDIUM

MEDIUM

NF02ZM0359

PADDYS POND AT OUTLET

WQMA / REAL TIME

MEDIUM

HIGH

LOW

LOW

NF02ZM0015

QUIDI VIDI LAKE AT OUTLET

WQMA

MEDIUM

HIGH

HIGH

LOW

NF02ZK0023

RATTLING BROOK BELOW BRIDGE

REAL TIME

LOW

MEDIUM

MEDIUM

LOW

NF02ZK0025

RATTLING BROOK BELOW PLANT DISCHARGE

REAL TIME

MEDIUM

MEDIUM

MEDIUM

LOW

NF02ZK0024

RATTLING BROOK BIG POND

REAL TIME

LOW

LOW

LOW

LOW

NF02ZM0016

RENNIE'S RIVER AT CARNELL DRIVE

WQMA

MEDIUM

HIGH

HIGH

LOW

NF02ZM0177

RENNIE'S RIVER AT PORTUGAL COVE ROAD

WQMA

MEDIUM

HIGH

MEDIUM

LOW

NF02ZN0004

SALMONIER RIVER AT ST. CATHERINES

WQMA

MEDIUM

MEDIUM

MEDIUM

MEDIUM

NF02ZM0185

SOUTH BROOK AT HEADWATERS

WQMA / CABIN

MEDIUM

MEDIUM

MEDIUM

LOW

NF02ZM0176

SOUTH BROOK AT MOUTH

WQMA

MEDIUM

HIGH

MEDIUM

LOW

NF02ZM0179

TRIBUTARY TO VIRGINIA RIVER AT GUZZWELL DRIVE

WQMA

MEDIUM

HIGH

MEDIUM

LOW

NF02ZM0098

VIRGINIA RIVER AT HEADWATERS

WQMA / CABIN

LOW

LOW

LOW

LOW

NF02ZM0180

VIRGINIA RIVER AT NEWFOUNDLAND DRIVE

WQMA

MEDIUM

MEDIUM

LOW

LOW

NF02ZM0014

VIRGINIA RIVER AT THE BOULEVARD

WQMA / CABIN

MEDIUM

HIGH

HIGH

LOW

NF02ZM0181

WATERFORD RIVER AT BLACKHEAD ROAD

WQMA

MEDIUM

HIGH

HIGH

LOW

NF02ZM0182

WATERFORD RIVER AT BREMIGANS POND DAM

WQMA

MEDIUM

MEDIUM

MEDIUM

LOW

NF02ZM0175

WATERFORD RIVER AT BROOKFIELD ROAD

WQMA

MEDIUM

HIGH

MEDIUM

LOW

NF02ZM0004

WATERFORD RIVER AT COMMONWEALTH AVENUE

WQMA

MEDIUM

MEDIUM

MEDIUM

LOW

NF02ZM0009

WATERFORD RIVER AT KILBRIDE

WQMA / REAL TIME

MEDIUM

HIGH

HIGH

LOW

CENTRAL

STATION NO.

STATION NAME

STATION TYPE

OVERALL RISK

CATEGORY A

CATEGORY B

CATEGORY C

NF02YO0142

CORDUROY BROOK NEAR CENTENNIAL PARK

WQMA / CABIN

MEDIUM

MEDIUM

MEDIUM

LOW

NF02YO0192

EAST POND BROOK BELOW EAST POND

REAL TIME / CABIN

MEDIUM

MEDIUM

LOW

LOW

NF02YO0020

EXPLOITS RIVER AT ASPEN BROOK

WQMA

MEDIUM

HIGH

MEDIUM

LOW

NF02YO0143

EXPLOITS RIVER AT BOND BRIDGE

WQMA

MEDIUM

HIGH

MEDIUM

MEDIUM

NF02YO0001

EXPLOITS RIVER AT GRAND FALLS

WQMA

MEDIUM

HIGH

MEDIUM

MEDIUM

NF02YO0128

EXPLOITS RIVER BELOW GRAND FALLS

WQMA

MEDIUM

HIGH

MEDIUM

MEDIUM

NF02YO0107

EXPLOITS RIVER NEAR MILLERTOWN

WQMA

MEDIUM

HIGH

MEDIUM

LOW

NF02YQ0030

GANDER RIVER AT APPLETON

WQMA

MEDIUM

MEDIUM

MEDIUM

LOW

NF02YM0003

INDIAN BROOK AT ROUTE 390

WQMA / CABIN

LOW

MEDIUM

LOW

LOW

NF02YO0189

JOES LAKE AT OUTLET

WQMA

LOW

MEDIUM

LOW

LOW

NF02YQ0006

NORTHWEST GANDER RIVER AT HIGHWAY BRIDGE

WQMA / CABIN

LOW

LOW

LOW

LOW

NF02YS0083

NORTHWEST RIVER AT TERRA NOVA NATIONAL PARK

WQMA

LOW

LOW

LOW

LOW

NF02YO0121

PETERS RIVER NEAR BOTWOOD

WQMA / CABIN

LOW

MEDIUM

LOW

LOW

NF02YR0001

POUND COVE BROOK AT ROUTE 330

WQMA / CABIN

LOW

LOW

LOW

LOW

NF02YM0004

SOUTH WEST BROOK AT BAIE VERTE

WQMA

LOW

LOW

LOW

LOW

NF02ZE0033

SOUTHWEST BROOK BELOW SOUTHWEST POND

REAL TIME / CABIN

LOW

LOW

LOW

LOW

NF02YS0011

TERRA NOVA RIVER AT SPENCER BRIDGE

WQMA

LOW

LOW

LOW

LOW

NF02YS0001

TERRA NOVA RIVER AT TERRA NOVA

WQMA

LOW

LOW

LOW

LOW

NF02YO0190

TRIBUTARY TO GILLS POND BROOK

REAL TIME / CABIN

MEDIUM

HIGH

MEDIUM

LOW

WESTERN

STATION NO.

STATION NAME

STATION TYPE

OVERALL RISK

CATEGORY A

CATEGORY B

CATEGORY C

NF02ZC0020

BUCK LAKE ON ROUTE 480

WQMA

LOW

LOW

LOW

LOW

NF02YL0013

CORNER BROOK AT MARGARET BOWATER PARK

WQMA

LOW

MEDIUM

LOW

LOW

NF02YG0020

EAGLE MOUNTAIN BROOK BELOW EAGLE MOUNTAIN POND

WQMA

LOW

LOW

LOW

LOW

NF02ZA0006

GRAND CODROY RIVER BELOW OVERFALL BROOK

WQMA

LOW

LOW

LOW

MEDIUM

NF02YK0022

HUMBER CANAL AT MAIN DAM ROAD

WQMA

MEDIUM

MEDIUM

MEDIUM

LOW

NF02YL0012

HUMBER RIVER AT HUMBER VILLAGE BRIDGE

WQMA / REAL TIME

MEDIUM

MEDIUM

MEDIUM

LOW

NF02YL0011

HUMBER RIVER AT LITTLE FALLS BRIDGE

WQMA

LOW

LOW

LOW

LOW

NF02YN0001

LLOYDS RIVER AT ROUTE 480

WQMA / CABIN

LOW

LOW

LOW

LOW

NF02YH0018

LOMOND RIVER AT ROUTE 431

WQMA / CABIN

MEDIUM

MEDIUM

LOW

MEDIUM

NF02YG0009

MAIN RIVER AT PARADISE POOL

WQMA

LOW

LOW

LOW

LOW

NF02YG0001

MAIN RIVER AT ROUTE 420

WQMA

LOW

LOW

LOW

LOW

NF02YN0043

PETER STRIDES LAKE AT ROUTE 480

WQMA

LOW

LOW

LOW

LOW

NF02YJ0004

PINCHGUT BROOK AT TCH

WQMA / CABIN

MEDIUM

LOW

MEDIUM

MEDIUM

NF02YE0004

PORTLAND CREEK AT ROUTE 430

WQMA

LOW

LOW

LOW

LOW

NF02YE0005

WESTERN BROOK AT ROUTE 430

WQMA / CABIN

LOW

LOW

MEDIUM

MEDIUM

NF02YL0029

WILD COVE BROOK AT ROUTE 440

WQMA / CABIN

MEDIUM

MEDIUM

MEDIUM

MEDIUM

 

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