Green Creek sits in the Bull River drainage, Classified Water (Region 4): trout and char catch-and-release on the listed Galbraith-to-Van, Aberfeldie-to-Tie Mill and Quinn Creek reaches, a daily quota of 1 (none under 30 cm) elsewhere from Jun 15 to Oct 31, a bait ban over the same window, and a Class II licence when and where the water is open, tributaries included. No Green Creek-specific exception is listed. Confirm the current synopsis before you fish.

No fish survey has been carried out on Green Creek itself, so its fish population is inferred from the surrounding Bull River network rather than confirmed here. Neighboring recorded tributaries such as Barrier Creek hold wild westslope cutthroat, and the same pattern likely extends to Green Creek's cold, narrow water, but nobody has logged a fish on this particular creek. Treat it as a probable, not proven, small-stream fishery.

The channel itself reads like the small, technical pocket water typical of these Bull River side-creeks: a median width near 4.3 m (narrow), a median gradient near 4.31 percent (a moderate pitch for a small mountain creek, steeper than a valley-bottom stream but well short of a whitewater canyon), and a peak mean-annual discharge around 0.331 m3/s (very low flow, headwater scale). Expect short drifts, tight casting lanes, and a rod better suited to 7 to 8 feet in a 3 or 4-weight than anything larger.

If fish are present, the same East Kootenay stream calendar that governs the rest of the upper Bull applies: caddis hatch from mid-June into October, mayflies including blue-winged olives come off through summer and fall, early-summer stoneflies work the faster riffles, and grasshoppers and other terrestrials take over in August as flows drop. The small-stream fly box used across the recorded Bull River tributaries fishes here too: a Royal Wulff or Stimulator as the searching dry, an Adams or Elk Hair Caddis to match the hatch, beetle and ant patterns through late summer, and a Hare's Ear or Prince Nymph to probe the deeper pockets.

No trailhead, parking area or dedicated road access has been confirmed for Green Creek. It lies within the general upper Bull River forest service road network that also reaches Barrier Creek and Outlook Creek, but nothing narrows that down to a specific approach for this creek. Expect rough, unmarked ground on any hike in, and check current road and land status before you go.