Jimmy Lake BC: Fly Fishing Only Cariboo Stillwater — Rainbow Trout, Access & Regulations
British Columbia Cariboo
Recommended Fly Patterns
Tom Thumb, Sedge, Chironomid, Damselfly
Jimmy Lake — Cariboo Fly-Fishing-Only Trophy Water
Jimmy Lake is a small, high-elevation Cariboo lake managed under fly-fishing-only regulations — a designation that keeps angling pressure low and produces fewer but larger rainbow trout. For dedicated fly anglers willing to navigate gravel roads and rough camping, Jimmy Lake delivers quality over quantity.
Lake Overview
| Stat | Detail |
|---|---|
| Region | Cariboo, BC (near Horsefly) |
| Elevation | 1,036 m |
| Surface Area | 45 ha |
| Maximum Depth | 8 m |
| Primary Species | Rainbow trout |
| Regulations | Fly fishing only |
| Access | Gravel road from Horsefly |
| Camping | Rustic camping |
Quality Over Quantity
The fly-fishing-only regulation is the key to Jimmy Lake’s character. By restricting gear types, the lake sees far fewer anglers than nearby general-regulation waters. The result is a healthier, less-pressured trout population where individual fish grow larger and fight harder.
- Rainbow trout average larger than typical Cariboo stocked lakes
- Fish are well-conditioned from abundant insect life in the productive shallow water
- The lake’s 8-metre maximum depth means the entire water column is in the feeding zone
- Expect fewer fish per day but more memorable catches
Recommended Fly Patterns
- Tom Thumb — the quintessential BC dry fly; deadly during calm evenings on Jimmy Lake
- Sedge (caddis) — effective during the prolific summer hatches
- Chironomid patterns — productive in spring under indicators, especially near drop-offs
- Dragonfly nymphs — effective along the weedy margins in early summer
Float Tube Recommended
A float tube or pontoon boat is strongly recommended for Jimmy Lake. The shallow lake benefits from being able to cover water methodically, and many of the best spots are only accessible from the water. Shore casting is possible but limited by vegetation and marshy edges.
Access and Camping
Jimmy Lake is reached via gravel road from Horsefly. The road is passable for most vehicles in dry summer conditions but can deteriorate after rain. Only rustic camping is available — bring everything you need, including water. There are no services at the lake.
For fly anglers who value solitude and the chance at a quality Cariboo rainbow, Jimmy Lake is worth the effort to reach.