Remote Keweenaw Peninsula stream with wild brook trout. Native brook trout in cold headwaters. Lightly fished and extremely scenic. Spring steelhead run in lower river.
Species present: Brook trout, Steelhead trout. Stream type: UP headwater.
Based on current water temperature and time of year, the following insects are active or expected on the Trap Rock River.
| Hatch | Latin | Top Patterns | Time of Day |
|---|---|---|---|
| March Brown / Gray Fox | Maccaffertium vicarium | March Brown Dry #10, Gray Fox Parachute #10 | afternoon |
| Sulphur | Ephemerella dorothea / invaria | Sulphur Comparadun #14, Sulphur Parachute #14 | evening |
| American March Brown Spinner | Maccaffertium vicarium | Rusty Spinner #10, March Brown Spinner #10 | evening |
| Light Cahill | Stenacron interpunctatum | Light Cahill #14, Cream Comparadun #14 | evening |
| Hexagenia (Hex) | Hexagenia limbata | Hex Wiggle Nymph #4, Extended Body Hex Dun #4 | night |
| Terrestrials | Beetles, ants, hoppers, crickets | Foam Beetle #12, Chernobyl Ant #10 | afternoon |