Johnson Lake BC Fishing Guide: Thompson Region Rainbow Trout — Spring & Fall Fishing Seasons

British Columbia Thompson-Nicola
Johnson Lake, BC
Fish Species: Rainbow Trout
Elevation 890 m
Area 35 ha
Max Depth 12 m
Avg Depth 5 m
Summer Water Temp 19°C
Boat Launch Cartop only
Access Road Gravel
Campgrounds Johnson Lake Rec Site
Special Regulations: Daily quota: 2.

Recommended Fly Patterns

Chironomid, Damselfly, Sedge

Johnson Lake — Thompson Region Rainbow Trout Fishing

Johnson Lake is a productive rainbow trout lake in British Columbia’s Thompson region, sitting at 890 metres elevation. This small, accessible lake rewards fly anglers who time their visits around the spring and fall hatches.

Lake Overview

Stat Detail
Region Thompson, BC
Elevation 890 m
Surface Area 35 ha
Maximum Depth 12 m
Primary Species Rainbow trout (stocked)
Access Gravel road
Camping Campsite on lake

Fishing Conditions

Johnson Lake is regularly stocked with rainbow trout, providing consistent fishing opportunities throughout the open-water season. The lake’s 12-metre depth creates a productive environment with good insect life and adequate dissolved oxygen for trout through most of the year.

  • Spring (April-May) — chironomid hatches bring trout to the surface; the best time to fish
  • Summer (June-August) — fish move deeper as water warms; early morning and evening are most productive
  • Fall (September-October) — damselfly and sedge activity picks up as water cools; excellent fishing

Recommended Fly Patterns

  • Chironomid patterns (bloodworms, bombers) — essential for spring fishing under an indicator
  • Damselfly nymphs — effective during the late spring and early summer migration
  • Leeches — a reliable searching pattern year-round
  • Doc Spratley and Halfback nymphs for subsurface prospecting

Access and Facilities

The lake is reached via a gravel access road suitable for most vehicles in dry conditions. A campsite directly on the lake allows for multi-day fishing trips. There is a basic boat launch suitable for car-top boats, float tubes, and pontoon boats. A float tube or small boat is recommended, as shoreline access is limited in some areas.

Johnson Lake’s combination of stocked fish, good insect hatches, and lakeside camping makes it a solid choice for Thompson region anglers looking for a reliable day trip or overnight destination.