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Scugog River

The Scugog River is a vital watercourse in the Kawartha region, connecting Lake Scugog to Sturgeon Lake. Flowing northward through the town of Lindsay, the river is intersected by Highways 35 and 7, making it a central feature of the local landscape.

The Scugog River watershed encompasses approximately 47 square kilometers, with a total watercourse length of 85 kilometers. The area is characterized by 20% natural vegetation cover, predominantly coniferous forests. This includes 23 hectares of forest interior and 7 hectares of deep forest interior, providing essential habitats for various plant and animal species.

Significant ecological features within the watershed include several Provincially Significant Wetlands, such as the East Cross Creek No.15 (1.7 hectares), Scugog River & Mariposa Brook (28 hectares), Stoney Creek Headwaters (110 hectares), and Sturgeon Lake 27 (3.5 hectares). Additionally, the East Cross Creek Area of Natural and Scientific Interest (ANSI) spans 0.22 hectares, highlighting the region's ecological importance.

Environmental assessments indicate that the surface water quality of the Scugog River is rated as fair, with total phosphorus concentrations averaging 0.045 mg/L, exceeding the provincial objective of 0.03 mg/L for rivers and streams. The health of benthic macroinvertebrate communities, as measured by the Family Biotic Index (FBI), is considered fair. Forest conditions within the watershed are rated as poor, reflecting the need for conservation efforts to enhance the area's natural environment.

Understanding the characteristics and environmental conditions of the Scugog River is essential for effective watershed management and conservation initiatives, ensuring the preservation of its ecological integrity and the health of the broader Sturgeon Lake ecosystem.

A sign for the Scugog River located in front of the river in the summer

View Map Of

Scugog River

Watershed characteristics

Learn about the characteristics of the Scugog River watershed.

The total watershed area is 47 km² or 4,685 ha and the total watercourse length is 85 km.

The dominant forest type is coniferous forest including:

  • Forest interior (100 m): 23 ha
  • Forest interior (200 m): 7 ha
  • Natural cover: 20%

Provincially Significant Wetlands

  • East Cross Creek No.15: 1.7 ha
  • Scugog River & Mariposa Brook: 28 ha
  • Stoney Creek Headwaters: 110 ha
  • Sturgeon Lake 27: 3.5 ha

Area of Natural and Scientific Interest (ANSI) - Life Science: East Cross Creek: 0.22 ha                                         

Environmental conditions

The following grades show the environmental conditions for the Scugog River watershed.

Surface water quality
Indicator Result Grade Status

Total phosphorus

0.027 mg/L

C

Fair

Benthic macroinvertebrates

N/A

N/A

N/A

Surrounding watershed surface water quality
Indicator Result Grade Status

Total phosphorus

0.053 mg/L

C

Fair

Benthic macroinvertebrates

6.58 (FBI)

F

Poor

The surface water quality grade was based on total phosphorous (TP) and/or benthic macroinvertebrates (aquatic insects) family biotic index (FBI). The provincial water quality objective for TP in rivers and streams is 0.03 mg/L and 0.02 mg/L in lakes. These guidelines were set because levels highter than these guildelines provide conditions for nuisance algae and aquatic plant growth. A TP value below 0.03 mg/L (rivers) or 0.02 (lakes) meets the provincial guidelines and is in the B (good) or A (excellent) grade range, while the result for benthic macroinvertebrates must be 5.00 or lower to receive a B (good) or A (very good to excellent) grade.

Well 432
Indicator Result Indicator grade Combined grade

Nitrate + nitrite

0.043 mg/L

A

B

Chloride

191.0 mg/L

D

 

Nitrogen levels in this well are excellent, falling below the Provincial Maximum Acceptable Concentration of 10 mg/L for drinking water. Chloride levels also receive an excellent grade, as they fall well below the Provincial Aesthetic Objective of 250 mg/L for drinking water. Groundwater quality results from the wells do not represent groundwater quality across the subwatershed, but rather, the water quality within the aquifer in which the well is located.

Forest conditions
Indicator Area cover Percent cover Grade Status

Forest cover

3.4 km²

7.5%

D

Poor

Forest interior

0.2 km²

0.5%

F

Very Poor

Forested riparian cover

0.8 km²

19.9%

D

Poor

The combined forest conditions grade for Scugog River is ranked as poor.

Wetland conditions
Indicator Area cover Percent cover Grade Status

Wetland cover

2.3 km²

5.15%

D

Poor

 

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