Colorado River

Evidence strength mostly comes down to three things: how direct the active gauge is, how clear the range is, and how fresh the data is.

These are the live readings and threshold notes behind today's score.

These notes cover the access details, route quirks, and source caveats most likely to matter once you get there.

• Named public corridorGrizzly Creek to Two Rivers Park; approximately 5.9 miles; Class II+(III)

  American Whitewater names the corridor, difficulty, length, direct 09070500 gauge association, and standard public endpoints. RiverBrain independently names the same run and current access context.

  Source

• Direct live gauge and flow gateUSGS 09070500; 900 cfs minimum and 8,600 cfs maximum planning bounds; 1,250–5,500 cfs preferred planning band

  USGS provides continuous discharge and gage-height telemetry. American Whitewater publishes the 900–8,600 cfs reach correlation; Colorado whitewater flow evidence identifies lower, standard, and high preferred bands. These are conservative planning cues, not a runnable guarantee.

  Source

• Lawful endpoint accessCDOT/Forest Service Grizzly Creek Boat Ramp to City of Glenwood Springs Two Rivers Park ramp

  Glenwood Springs documents both Grizzly Creek and Two Rivers as area boat ramps, while CDOT identifies the Grizzly Creek launch adjacent to the rest area. Use the exact named ramps and verify current closures and parking.

  Source

• Safety boundaryExperienced moving-water users; mandatory Two Rivers exit before South Canyon

  American Whitewater rates the reach Class II+(III) and warns that higher water becomes pushier. Preserve commercial-traffic, cold-water, strainer/sweeper, debris, and canyon-closure warnings and do not continue into the separate Two Rivers-to-South-Canyon package.

  Source

• Camping and shuttle logisticsNo endpoint camping; separate lodging/campground required; I-70 shuttle

  The named endpoints are a rest-area/boat-launch context and a city day-use ramp. No on-route camping is implied; stage a legal vehicle shuttle and use separate lawful lodging or camping.

  Source

• Rights-clean image decisionApproved Wikimedia Commons CC BY 4.0 Two Rivers Park boat-ramp image

  The selected endpoint image is Jeffrey Beall’s Two Rivers Park boat-ramp photograph, licensed CC BY 4.0 on Wikimedia Commons. Retain attribution and license terms; use it as endpoint context rather than claiming it depicts the Grizzly Creek launch.

  Source

• Duplicate separationDistinct Grizzly Creek-to-Two Rivers corridor above the existing Two Rivers-to-South-Canyon route

  This route ends at Two Rivers and uses direct 09070500. The existing lower route begins at the same city endpoint but uses 09085100 and continues downstream to South Canyon; the shared boundary endpoint does not make the reaches duplicates.

  Source

Use these links to double-check the gauge, route details, and access notes before you head out.

• American Whitewater Grizzly Creek to Two Rivers Park
• RiverBrain Grizzly Creek to Two Rivers Park
• USGS 09070500 monitoring location
• USGS 09070500 current conditions
• Colorado whitewater flow evidence
• Glenwood Springs area river access
• Two Rivers Park facility
• CDOT Glenwood Canyon rest areas and Grizzly Creek launch
• Wikimedia Commons CC BY 4.0 Two Rivers ramp image