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Nogies Creek

Nogies Creek is a significant watercourse in the Kawartha region, flowing southward from Crystal Lake into the northern end of Pigeon Lake. The creek's watershed encompasses approximately 185 square kilometers, with a total watercourse length of 275 kilometers. The landscape is predominantly covered by natural vegetation, with coniferous forests being the dominant type. Notably, the area includes 5,928 hectares of forest interior and 2,016 hectares of deep forest interior, providing essential habitats for various plant and animal species.

Within the watershed, there are significant natural sites, including the Nogies Creek Provincially Significant Wetland covering 214 hectares and the Nogies Creek Mouth wetland spanning 30 hectares. These wetlands play a crucial role in maintaining regional biodiversity, water quality, and flood regulation.

Environmental assessments indicate that the surface water quality of Nogies Creek is rated as excellent, with total phosphorus concentrations averaging 0.014 mg/L, well below 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, with a score of 5.26. Forest conditions within the watershed are rated as excellent, reflecting the area's rich natural heritage.

Understanding the characteristics and environmental conditions of Nogies Creek is essential for effective watershed management and conservation efforts, ensuring the preservation of its ecological integrity and the health of the broader Pigeon Lake ecosystem.

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Nogies Creek

Watershed characteristics

Learn about the characteristics of the Nogies Creek watershed.

The total watershed area is 185 km² or 18,549 ha and the total watercourse length is 275 km.

The dominant forest type is coniferous forest including:

  • Forest Interior (100 m): 5,928 ha
  • Forest Interior (200 m): 2,016 ha
  • Natural Cover: 89%

Provincially Significant Wetlands

  • Nogies Creek: 214 ha
  • Nogies Creek Mouth: 30 ha

Environmental conditions

The following grades show the environmental conditions for the Nogies Creek watershed.

Surface water quality
Indicator Result Grade Status

Total phosphorus

0.014 mg/L

A

Excellent

Benthic macroinvertebrates

5.26 (FBI)

C

Fair

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.

Forest conditions
Indicator Area cover Percent cover Grade Status

Forest cover

146.2 km²

78.8%

A

Excellent

Forest interior

66.9 km²

36.0%

A

Excellent

Forested riparian cover

11.0 km²

64.1%

A

Excellent

The combined forest conditions grade for Nogies Creek is ranked as excellent.

Wetland conditions
Indicator Area cover Percent cover Grade Status

Wetland cover

21.90 km²

11.80%

A

Excellent

 

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