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40.84403169291685°N 109.082221198852°W
Green River — CO, UT

Browns Park

18 miles Class I–II 3 days
Flow Dam-regulated from Flaming Gorge. Check Greendale gauge. Wide runnable range....
Season May through September. Accessible year-round at low flows. Cold spring mornings.
Duration 2–4 days (typical 3)
Permit No permit for Browns Park. NPS permit required for downstream Lodore Canyon.
Shuttle 65 mi — 1.5 hrs
Logistics 65-mile shuttle via mixed paved/dirt road. High clearance after rain. Remote...
Overview

A quiet, wildlife-rich valley float through outlaw country — Browns Park delivers 35 miles of easy paddling, abundant wildlife, and Colorado Plateau history between the Flaming Gorge tailwater and the Gates of Lodore.

Browns Park is the green, gentle middle chapter between two of the Green River's most dramatic chapters. After the tailwater fishery of the Flaming Gorge section and before the vertical walls close in at the Gates of Lodore, the river spreads wide through a broad valley of cottonwood groves, wetlands, and open range. This was outlaw country — Butch Cassidy's Wild Bunch wintered here, and the park still carries the feeling of a place apart from the rest of the West. The float is flatwater Class I, accessible to beginners, and rich with wildlife. The transition from the park to the canyon at the Gates of Lodore is abrupt and memorable: one moment, open sky and cottonwood flats; the next, vertical red walls 2,000 feet high.

Trip styles
multi-day float, wildlife float, wilderness camping
Ideal for
wildlife watchers, history enthusiasts, beginner paddlers, canoeists, family multi-day floats
River type
flatwater, valley river, wildlife corridor
18 miles
3 days typical
Flows & Hydrology

Dam-regulated flows from Flaming Gorge. Consistent and manageable. Wide runnable range for flatwater.

Reference Gauges

Green River near Greendale, UT

Historical Green River gauge above Flaming Gorge reservoir area. Primary reference for Lodore Canyon and Gates of Lodore trip planning when used in context with current downstream releases.

Current flow — Green River near Greendale, UT

Updating… Provisional

Flaming Gorge Dam regulates flows throughout this section. The Greendale gauge provides the most immediate reference.

7-Day Forecast

Loading forecast…
Seasonality
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Flows regulated upstream by Flaming Gorge Dam. Best May–September. Runnable year-round at low flows.

Spring
higher dam releases during runoff season, cold nights, muddy road access after rain
Summer
heat exposure in the open valley, afternoon thunderstorms, sun exposure
Fall
cold nights, early snows possible, short days
Geology

Browns Park is a structural basin — a graben bounded by faults — where the Green River meanders across a relatively flat floor. The Browns Park Formation, a Miocene-age volcanic ash and sedimentary deposit, records the last period of valley filling before downcutting began in the Pleistocene.

Rock Record
Browns Park Formation (Miocene)
Uinta Formation
Maeser Member
Province
Uinta Basin / Basin and Range transition
Rock types
alluvial deposits · sandstone · shale
Ecology
History
Logistics

No permit needed. Shuttle involves dirt roads — high clearance after rain. Remote area; plan food and supplies accordingly.

Gear
Camp Kitchen

On a seven-day trip, you'll cook roughly 20 meals on a folding table in the sand. The constraint isn't ambition — it's ice management. Days one through three, you have real cooler capacity. Days four and five are the transition zone. Days six and seven are pantry cooking.

The best river cooks plan backward from the last night. If your final dinner is still good — not just edible, but genuinely good — the trip ends on a high.

Dinner Ideas by Trip Day
18River miles
Reading the River

Books that shape the science, history, and stories behind this place.

Canyon Country

Canyon Country

Donald L. Baars · 1989

An accessible introduction to the rock layers, canyon formation, and landscapes of the Colorado Plateau and canyon country.

knowledge
Down the Great Unknown

Down the Great Unknown

Edward Dolnick · 2002

The dramatic story of John Wesley Powell's first expedition through the Grand Canyon and the birth of river exploration in the American West.

storytelling cultural context knowledge
Fluvial Processes in Geomorphology

Fluvial Processes in Geomorphology

Luna B. Leopold, M. Gordon Wolman, John P. Miller · 1964

A foundational scientific text on river geomorphology, covering sediment transport, channel form, fluvial dynamics, and the physical processes that shape river systems.

knowledge
Geology of Utah's Rivers

Geology of Utah's Rivers

William T. Parry · 2016

A geological exploration of Utah’s major river systems explaining how tectonics, sedimentation, and erosion shaped the canyon landscapes of the Colorado Plateau and surrounding regions.

knowledge
How to Read Water

How to Read Water

Tristan Gooley · 2016

A guide to understanding the subtle clues in water movement—from puddles and rivers to oceans—teaching readers how currents, waves, surface textures, and patterns reveal information about wind, depth, obstacles, and landscape.

knowledge tone
Introduction to Physical Hydrology

Introduction to Physical Hydrology

Martin R. Hendriks · 2010

A rigorous, university-level introduction to physical hydrology covering the full water cycle — precipitation, evapotranspiration, infiltration, groundwater, runoff generation, and streamflow — with quantitative methods throughout. The scientific foundation for understanding how rivers work at the watershed scale, from snowpack in the Rockies to baseflow in canyon rivers.

knowledge
River Mechanics

River Mechanics

Pierre Y. Julien · 2002

A rigorous graduate-level treatment of river hydraulics and sediment transport, covering flow resistance, bedforms, channel stability, and the physical mechanics that govern river behavior.

knowledge
River Runners' Guide to Utah and Adjacent Areas

River Runners' Guide to Utah and Adjacent Areas

Gary C. Nichols · 2009

A comprehensive guidebook to whitewater rivers in Utah and neighboring regions, covering river access, rapids, flow considerations, trip logistics, and historical context for river runners.

knowledge
The Colorado Plateau

The Colorado Plateau

Donald L. Baars · 1983

A key geological reference for understanding the uplift, stratigraphy, tectonics, and erosional history of the Colorado Plateau.

knowledge
The Control of Nature

The Control of Nature

John McPhee · 1989

Three deeply reported narratives about humanity's attempts to stop rivers, lava, and debris flows — and what the land does in return. A masterwork of geological journalism that asks whether nature can ever truly be controlled.

tone storytelling philosophy knowledge
The Exploration of the Colorado River

The Exploration of the Colorado River

John Wesley Powell · 1875

Powell's original account of the first scientific expedition through the Grand Canyon, documenting the geology, natural history, and challenges of navigating the unknown Colorado River.

knowledge storytelling cultural context
The Secret Knowledge of Water

The Secret Knowledge of Water

Craig Childs · 2000

Craig Childs explores the hidden water sources and desert hydrology of the American Southwest, revealing how water shapes and sustains life in the most arid landscapes on Earth.

tone philosophy knowledge
Where the Old West Stayed Young

Where the Old West Stayed Young

John Rolfe Burroughs · 1962

A historical portrait of the ranching and outlaw culture of Browns Park and the remote canyons of the Colorado Plateau, illuminating how geography shaped the final stronghold of the old frontier.

cultural context storytelling knowledge
Upstream Swallow Canyon
Lodore Canyon
Downstream Lodore Canyon