depuy-spring-creek

DePuy Spring Creek is a creek in Montana.

It ranks #10 among the 17 waters of Montana in the registry, and is of national prominence.

Also called DePuy's, DePuy's Spring Creek, Depuy Spring Creek and Depuy’s.

Fished for trout (inferred from the species listed).

Species: rainbow trout, brown trout, cutthroat trout, cutbow and mountain whitefish.

No GNIS feature exists for this water. It is a private spring creek on the ranch channels near Livingston, Park County, Montana, and the USGS gazetteer does not record it. Same-named GNIS features (Armstrong Creek in Carbon County, Depuy Creek in Flathead County) are DIFFERENT streams and must never be bound to it.

Rod fee required — book with the owner. Booking and owner details. Rod fee with advance booking; rate varies by season. Not yet verified. Rod fee and advance booking; private land, publicly bookable. Verified in research sources.

Lower DePuy's (stretch). Rod fee required — book with the owner.

Middle Section (stretch). Rod fee required — book with the owner.

Upper DePuy's (stretch). Rod fee required — book with the owner.

Dick's Pond (feature). Rod fee required — book with the owner. Booking and owner details. Inherited from parent water: Rod fee and advance booking; private land, publicly bookable. Verified in research sources. Also called Dicks Pond.

It is upstream of The Narrows.

PhD Pool (hole). Rod fee required — book with the owner. Booking and owner details. Inherited from parent water: Rod fee and advance booking; private land, publicly bookable. Verified in research sources. Also called PhD Hole.

It is on the stretch Upper DePuy's.

Angler's Hut (feature). Rod fee required — book with the owner. Booking and owner details. Inherited from parent water: Rod fee and advance booking; private land, publicly bookable. Verified in research sources. Also called Anglers Hut.

Annie's Run (hole). Rod fee required — book with the owner. Booking and owner details. Inherited from parent water: Rod fee and advance booking; private land, publicly bookable. Verified in research sources.

It is on the stretch Upper DePuy's.

Betty's Riffle (hole). Rod fee required — book with the owner. Booking and owner details. Inherited from parent water: Rod fee and advance booking; private land, publicly bookable. Verified in research sources.

It is on the stretch Upper DePuy's.

Eva's Hut (feature). Rod fee required — book with the owner. Booking and owner details. Inherited from parent water: Rod fee and advance booking; private land, publicly bookable. Verified in research sources.

Fisherman's Hut (feature). Rod fee required — book with the owner. Booking and owner details. Inherited from parent water: Rod fee and advance booking; private land, publicly bookable. Verified in research sources.

The Narrows (feature). Rod fee required — book with the owner. Booking and owner details. Inherited from parent water: Rod fee and advance booking; private land, publicly bookable. Verified in research sources.

It is upstream of Yellowstone River confluence.

It is downstream of Dick's Pond.

Yellowstone River confluence (confluence). Rod fee required — book with the owner. Booking and owner details. Inherited from parent water: Rod fee and advance booking; private land, publicly bookable. Verified in research sources.

It is downstream of The Narrows.

Sourced from 3 independent fly sites.

Sources: Montana Angler, outsidebozeman.com, parksflyshop.com, yellowstoneangler.com (retrieved 2026-10-20) and yellowstoneangler.com (2).

Hatches

Mother's Day Caddis

Stage: emerger, adult. Well sourced. Sources give different windows; this shows the range.

  1. Jan
  2. Feb
  3. Mar
  4. Apr hatching
  5. May hatching
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

Reported windows differ: late April on one page, late April and early May on another. Splashy rises to emergers; Brachycentrus occidentalis.

Sources: yellowstoneangler.com, yellowstoneangler.com

Pale Morning Dun (Ephemerella infrequens) (Ephemerella infrequens)

Stage: emerger, dun, spinner. Well sourced. Sources give different windows; this shows the range.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun hatching
  7. Jul hatching
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

Reported sizes differ: 14-16 on one page, 14-18 on another. Larger first PMD; emerges mid-June to early July, and mid-June to mid-July is the best dry-fly period. Duns mid-morning; spinners evening, sometimes morning. Timing also stated as late June to early July.

Sources: yellowstoneangler.com, yellowstoneangler.com

Baetis (fall)

Stage: dun. Well sourced.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct hatching
  11. Nov hatching
  12. Dec

Often windy.

Sources: yellowstoneangler.com, yellowstoneangler.com

Baetis (spring)

Stage: nymph, dun. Well sourced.

  1. Jan
  2. Feb
  3. Mar hatching, peak
  4. Apr hatching
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

Peak: mid-to-late March

Nymphs from late February; fish key in mid to late March; hatches continue to the end of April. Best when air is above 50F, cloudy and calm. Size about 18-20.

Sources: yellowstoneangler.com, yellowstoneangler.com

Terrestrials

Stage: adult. Well sourced.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul hatching
  8. Aug hatching
  9. Sep hatching
  10. Oct
  11. Nov
  12. Dec

Ants, beetles, hoppers and crickets.

Sources: yellowstoneangler.com

Damselfly

Stage: nymph, adult. Well sourced.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun hatching
  7. Jul hatching
  8. Aug hatching
  9. Sep
  10. Oct
  11. Nov
  12. Dec

Nymphs year-round; dries best in summer; mostly ponds.

Sources: yellowstoneangler.com

Sulphur (small summer baetis)

Stage: dun, nymph. Well sourced. Sources give different windows; this shows the range.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul hatching
  8. Aug hatching
  9. Sep hatching
  10. Oct
  11. Nov
  12. Dec

Late-afternoon duns about 4-6 PM; size 20-24 on one page, 20-22 on another. Nymphs fished late July to early September; continues into August after the PMDs stop.

Sources: yellowstoneangler.com, yellowstoneangler.com

Callibaetis

Well sourced.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun hatching
  7. Jul hatching
  8. Aug hatching
  9. Sep
  10. Oct
  11. Nov
  12. Dec

Mostly on Dick's pond and the upper pond; size 14-16.

Sources: yellowstoneangler.com

Pale Morning Dun (Ephemerella inermis) (Ephemerella inermis)

Stage: emerger, dun. Well sourced. Sources give different windows; this shows the range.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul hatching
  8. Aug hatching
  9. Sep
  10. Oct
  11. Nov
  12. Dec

Reported sizes differ: 18-20 on one page, 16-20 on another. Smaller second PMD; mid-July through August; fish emergers.

Sources: yellowstoneangler.com, yellowstoneangler.com

Also named, timing not yet researched: Midge.

Access, closures and rules change; check with the state agency before you go.