River Runners' Guide to Utah and Adjacent Areas
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.
Flow
— cfs
Season
Spring, summer, fall
Duration
2–4 days (typical 3)
Permit
No permit for Browns Park. NPS permit required for downstream Lodore Canyon.
Shuttle
24 mi — 45 min
Logistics
Beginner
Green River — CO, UT
Browns Park
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.
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 Gates of Lodore trip planning when used in context with current downstream releases.
USGS #09234500Current flow — Green River near Greendale, UT
USGS
—
Water temperature
Gage height
Reading the Water
Low water
Below 800 cfs: very gentle float with exposed gravel bars; great for camping and wildlife.
Medium water
800–3,000 cfs: easy float with gentle current; ideal conditions.
High water
Above 3,000 cfs: faster current throughout; campsites may flood; still Class I.
Hazards by season
- 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
Water temperature
Cold in spring from dam releases, warming through summer. Wetsuits recommended early season.
7-Day 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
Reading the Rock Record
Rock sequence of Browns Park
↑ Rim
- Browns Park Formation
- Uinta Formation
↓ River level
Ecology
Life in the Corridor
Flora
- Biomes
- riparian wetland, sage shrubland, Colorado Plateau transition
Fauna
- Notable species
- trumpeter swan, sandhill crane, American white pelican, river otter, beaver, mule deer, pronghorn, black bear
- Sensitive species
- trumpeter swan (nesting), bald eagle (winter), greater sage-grouse
History
Browns Park was a notorious outlaw refuge in the late 1800s — Butch Cassidy's Wild Bunch used the remote valley as a winter hideout and planning base. The John Jarvie Historic Ranch, operated by BLM, preserves this history along the river corridor.
Layers of Human Presence
- Indigenous homelands
- Ute Nation
- Historical layers
- Butch Cassidy and Wild Bunch outlaw hideout, John Jarvie ranch historic site, 19th century cattle ranching
Logistics
No permit needed. Shuttle involves dirt roads — high clearance after rain. Remote area; plan food and supplies accordingly.
Getting There and Getting Out
Take-out — Gates of Lodore Put-in
Shuttle
Swallow Canyon Boat Ramp to Gates of Lodore Put-in
- Road miles
- 24
- Drive time
- 45 min
- Vehicle
- High clearance recommended
CO-318 between the Swallow Canyon ramp and Gates of Lodore — the everyday shuttle. When the Browns Park dirt closes after weather, the long way around runs roughly 65 miles and an hour and a half. Check NPS/BLM conditions.
Google used a car, their times do not account for towing a trailer, driving on washboard, pitted pavement, and dirt that goes to grease in the rain — our adjusted times help align to the reality of running real river shuttles.
Permit
No permit required for floating through Browns Park. For Lodore Canyon launch (Gates of Lodore), NPS permit required. Camping on BLM and refuge lands is generally allowed — follow leave-no-trace.
- Required
- No
- Agency
- USFWS — Browns Park National Wildlife Refuge / BLM
Trip realities
- Gateway towns
- Dutch John, UT, Vernal, UT, Craig, CO
- Groover
- Recommended
- Managed by
- USFWS — Browns Park National Wildlife Refuge, BLM Little Snake Field Office
Mixed management — refuge, BLM, and some private land. Respect property boundaries. Leave-no-trace camping throughout. John Jarvie Ranch is open to visitors during summer months.
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.
Feeding a Crew for Seven Days
Ice management strategy
Two coolers, segregated by access frequency. A well-managed deep cooler will hold usable ice through day 6 in 100°F air temps.
Kitchen setup
Folding table, two-burner propane stove, cast iron skillet, Dutch oven, and a large pot. The Dutch oven is the single most versatile piece.
Reading the River
Books that shape the science, history, and stories behind this place.
The Exploration of the Colorado River
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.
