bluestreamflyFind water
Menu
South Boulder Creek flowing through boulders in Eldorado Canyon State Park, Colorado
All Colorado reports

South Boulder Creek Below Gross Reservoir

Photo: Jeffrey Beall Opens in a new tab. · CC BY 3.0

Should I go fishing?

Check before you go.

Check the official notice before fishing.

We cannot confirm the current official status. Fishing tips stay hidden until you check the agency link.

See the source check time with the notice
Check the official noticeCheck river sources

Restrictions and advisories

Check South Boulder Creek Below Gross Reservoir before fishing.

These notices match this river report. No notice here does not mean the river is open. Always check the agency before you fish.

Status not clear — check nowOfficial restrictionAccess restriction

Denver Water summer 2026 Gross Reservoir access update

Area
Gross Reservoir outlet trails and approaches only
Link checked
Link status
Check the agency now
Check again by
What to know about this notice

Construction and posted access changes do not describe Walker Ranch or Eldorado Canyon status.

The source covers the named reservoir approaches. Without clear start and end times, the river page asks anglers to check the agency before leaving.

Open the official notice: Denver Water summer 2026 Gross Reservoir access update Opens in a new tab.

Flow and weather

Showing server-checked river conditions while current readings refresh.
Flow
—
Live flow is not available here.
Air forecast
54°F
Next 24h high
66.0°F

NWS air forecast near

Rain chance
6%

This is an air forecast, not a river-temperature reading. Check the water with a stream thermometer before fishing in hot weather.

Latest stored weather check

Mostly Cloudy

Wind
3 mph
Weather checked
More forecast and source details

Mostly Cloudy

National Weather Service

South Boulder Creek below Gross Dam

The National Weather Service forecast is temporarily unavailable.

Live data

Where these readings come from

RiverReports gauge: South Boulder Creek below Gross Reservoir

RiverReports gauge Opens in a new tab.Official NWS forecast Opens in a new tab.

Fly choices are paused.

Check the current warning, restriction, or advisory before choosing flies or tactics.

Seasonal fly and tactic guidance stays hidden while this stop or unverified notice applies.

More fishing tips

Methods, fish species and trip notes

Fishing advice is paused.

Use the official notice and current conditions instead of fishing advice.

We cannot confirm the current official status. Fishing tips stay hidden until you check the agency link.

South Boulder Creek Below Gross Reservoir access and rules.

Use these places as starting points. Open the access link below and check posted signs before you park or enter.

Before you go

Colorado statewide fishing rules and posted land-manager restrictions control. No below-Gross special-water entry was verified in the current Chapter 1 review, so this page does not borrow Boulder Creek's city-specific rules. Recheck the current rule and posted site notices before fishing.

Where to access the river

Gross Reservoir outlet area

Check Denver Water's current recreation and construction updates. Treat the outlet trail as bank-access and observation context only. Body contact and wading are prohibited, and approaches can close intermittently.

Walker Ranch Open Space

Boulder County provides official trail and fishing information. Fish from legal banks because county open-space rules prohibit wading. The approach can be strenuous and public water is not continuous beyond mapped land.

Eldorado Canyon State Park

Official creek access with park-pass and seasonal vehicle-reservation requirements. No public parking is available in the town of Eldorado Springs.

  • Check Denver Water's current construction page on every Gross-area trip through the active project period.
  • Denver Water prohibits body contact, including wading, at Gross Reservoir property. Boulder County also prohibits swimming and wading at Walker Ranch. Plan bank fishing in both sections.
  • Eldorado Canyon requires vehicle reservations on summer weekends and holidays during the posted season. Confirm current dates before arrival.
  • Do not assume the entire area between named public properties is open bank access.

If this water does not fit the day, check another report before you start the drive.

ColoradoBoulder Creek fishing reportA separate named water and urban/canyon report within the broader Boulder Creek drainage; its rules and gauge do not substitute for South Boulder Creek.ColoradoNorth St. Vrain fishing reportA different Front Range creek option when access or releases block this corridor.ColoradoSouth Platte Below Chatfield fishing reportA lower-elevation tailwater alternative with its own gauge and access checks.
See all Colorado fly fishing reports

Sources and report details

Official agencies and primary river operators come first. Secondary tools are labeled so you know what carries the most weight.

Rules and closures

Check what is allowed, where the rule applies, and whether the river is open.

Flow and weather

Check the latest river reading and forecast before you leave.

Access and land

Check public entry points, land rules, and seasonal access changes.

More helpful links

Use these links for stocking, safety, and other local details.

See all 13 checked sources

Rules and closures

Check what is allowed, where the rule applies, and whether the river is open.

Flow and weather

Check the latest river reading and forecast before you leave.

Access and land

Check public entry points, land rules, and seasonal access changes.

More helpful links

Use these links for stocking, safety, and other local details.

Recently checked. Last checked . Conditions and rules can still change, so open decision-critical links before fishing.

See something wrong? Report a source problem. Please do not send private spots or private access notes.

How this report was checked

How this report was checked

Trip guidance checked

What was checked: This restored report is maintained from official flow, regulation, access, weather, and public-land sources. Planning guidance is separated from live observations and legal rules.

Live measurements and forecasts keep their provider timestamps. Rules, access, and trip guidance use the source-review date shown here. BlueStreamFly planning advice is editorial interpretation, not an agency notice.

First-hand experience: BlueStreamFly does not claim a first-hand visit or local field test for this report unless a real contributor is explicitly named and linked.

Check the official notice first.

Fishing tips stay hidden until the official notice is clear.