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Fishing Waterton Canyon

Fishing Waterton Canyon on the South Platte near Littleton: walk or bike access, tailwater trout, best sections, the no-dogs rule and winter tips.

Updated November 14, 2026. 3 min read.

Right now

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What to tie on now

Flies
Midges #20–24, RS2, small Baetis nymph, egg
Rig
9' 5x to 6x, small indicator, a midge dropper. Sight-fish the slow lanes.

Flies checked against local shop reports on Nov 15. Ask at the local fly shop for what hatched this morning. They know before we do.

Water
South Platte between Strontia Springs Dam and the canyon mouth
Drive from Denver
About 45–60 minutes from north Denver
Access
Walk or bike in on a gated dirt road (no cars)
Best for
The closest tailwater trout to Denver
Season
Year-round
Gauge
Check Denver Water/DWR releases and nearby South Platte gauges
Dogs
Not allowed, to protect the bighorn sheep herd

Where to park

Waterton Canyon Trailhead

  • South on Wadsworth from C-470, left on Waterton Road, second entrance on the left. Cross Waterton Road at the crosswalk to the canyon gate.
  • No dogs anywhere in the canyon (bighorn sheep). Daylight hours only, no overnight parking.
  • Weekend mornings fill early. More parking a quarter mile farther down Waterton Road.

Lots, fees and hours change. Check posted signs when you arrive.

Overview

Waterton Canyon is a dirt service road running about six miles up the South Platte to Strontia Springs Dam. Cars aren't allowed, so you walk or ride a bike in. Because the river comes from a dam, it stays fishable in winter, and it's the closest tailwater trout to the metro.

No dogs: why it's enforced

Waterton Canyon is home to a herd of bighorn sheep. Denver Water doesn't allow dogs or other pets anywhere in the canyon, on a leash or not, and rangers enforce it. If you're bringing a dog, fish Clear Creek, the Big Thompson or Deckers instead.

Where to fish

The water near the parking lot sees the most people. Ride or walk past the first mile, and you'll find more room. The upper canyon toward the dam is where the better water starts.

Flies

Midges, RS2s and small Baetis nymphs most of the year. Sight-fish the slow lanes with long, light tippet.

Bike or walk?

A bike gets you past the crowded first miles quickly and leaves more time to fish the upper canyon. Walking works fine if you're happy fishing the lower and middle sections. Either way, it's a gentle grade on a wide dirt road.

Winter fishing

Because the water comes from Strontia Springs Dam, Waterton stays fishable when freestones freeze. Fish the slow lanes midday with midges and RS2s, and bring layers, because the canyon floor stays shaded.

Know before you go

Where to eat and gear up

Stops in Littleton. Dog-friendly means leashed dogs on the patio; call to confirm, especially in winter.

StopTypeWhy
Coal Mine Ave BrewingDogs welcome on patioOff-leash dog yard
Locavore Beer WorksDogs welcome on patioDogs inside and out
Breckenridge BreweryDogs welcome on patioBeer garden + food
Minturn Anglers (Lone Tree)Fly shop / tackleClosest fly shop to Waterton

Questions anglers ask

Are dogs allowed in Waterton Canyon?
No. Denver Water prohibits dogs and other pets in the canyon to protect the bighorn sheep.
Can you drive into Waterton Canyon?
No. It's walk, bike or horseback only on the canyon road.
How long is Waterton Canyon?
About 6.2 miles from the trailhead to Strontia Springs Dam.
Are there dog-friendly restaurants near Waterton Canyon?
Yes. In Littleton, Coal Mine Ave Brewing, Locavore Beer Works, Breckenridge Brewery welcome leashed dogs on their patios. Patios are seasonal, so call ahead in winter.
Where can I buy flies or tackle near Waterton Canyon?
Minturn Anglers (Lone Tree) is the closest shop. Closest fly shop to Waterton.

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