⚠️ Safety disclaimer: This page displays raw USGS stream gauge data. Flow rates are informational only.
Never assume a crossing is safe based solely on CFS readings. Water depth, current speed, substrate,
and your experience all matter. In doubt, turn around. Check
USGS Water Data for official data.
🌊 Active Dam Release Surge Warnings
Dillon Dam release — elevated flows on Blue River / Snake River
Expect water levels to remain elevated for 12–24h below Dillon Dam. Check current USGS gauge before entering.
Ruedi Dam release — elevated flows on Frying Pan River
Expect water levels to remain elevated for 12–24h below Ruedi Dam. Check current USGS gauge before entering.
☠️ Low-Head Dam Danger Zones on Colorado Rivers
Full report →
Low-head dams create hydraulic recirculation (keeper holes) that trap swimmers and paddlers. ALWAYS portage — no exceptions.
⚠️ Cal Gulch Diversion Dam · South Platte River
⚠️ Globeville Diversion Dam · South Platte River
⚠️ Windsor Diversion Dam · Cache la Poudre River
⚠️ Boulder Creek Diversion Structure · Boulder Creek
+3 more low-head dams — see all
18
Active Gauges
1
Crossing Alerts
8
River Levels
10
Trail Crossings
🥾 Trail Crossings
10
🥾 Trail Crossing
Boulder Creek near Boulder
Boulder Creek Path / South Boulder Creek trails
174cfs
✅ Normal
Gauge height: 5.44 ft
30-day trend
🥾 Trail Crossing
South Boulder Creek at Eldorado Springs
Eldorado Canyon / Rattlesnake Gulch / Doudy Draw
146cfs
✅ Normal
Gauge height: 10.44 ft
30-day trend
🥾 Trail Crossing
Cherry Creek at Franktown
Cherry Creek Trail upper reach / Douglas County open space
49cfs
✅ Normal
Gauge height: 1.39 ft
30-day trend
🥾 Trail Crossing
Blue River below Green Mountain Reservoir
Eagles Nest Wilderness / Blue River corridor
382cfs
📈 High
Gauge height: 3.82 ft
30-day trend
🥾 Trail Crossing
Frazer River near Tabernash
Fraser Valley trails / Granby Ranch / Winter Park
175cfs
📈 High
Gauge height: 8.59 ft
30-day trend
🥾 Trail Crossing
Frying Pan River near Ruedi
Frying Pan River corridor / Hunter-Fryingpan Wilderness
745cfs
🌊 Very High
Gauge height: 2.51 ft
30-day trend
High water: Frying Pan River near Ruedi at 745 CFS — crossings difficult
Crossings require extreme caution. Use trekking poles, unbuckle pack straps.
🥾 Trail Crossing
Taylor River below Taylor Park Reservoir
Taylor River trail / Fossil Ridge Wilderness
138cfs
✅ Normal
Gauge height: 1.80 ft
30-day trend
🥾 Trail Crossing
South Fork Arkansas near Fairplay
Lost Creek Wilderness / Tarryall Creek area
66cfs
✅ Normal
Gauge height: 5.03 ft
30-day trend
🥾 Trail Crossing
Williams Fork River below Reservoir
Williams Fork Mountains / Vasquez Peak Wilderness
13cfs
✅ Normal
Gauge height: 0.99 ft
30-day trend
🥾 Trail Crossing
Gunnison River at Crystal
Crested Butte area / East River corridor
550cfs
📈 High
Gauge height: 3.83 ft
30-day trend
🛶 River Levels Rafting · Kayaking · Fishing
8
🛶 River Level
Arkansas River at Salida
Arkansas Headwaters Recreation Area / Brown Canyon
45cfs
📉 Low
Gauge height: 1.93 ft
30-day trend
Prime whitewater gauge: 300-600 CFS ideal for Browns Canyon, 600-1500 for Royal Gorge
🛶 River Level
Roaring Fork River at Glenwood Springs
Roaring Fork River corridor / Rio Grande Trail
1620cfs
📈 High
Gauge height: 3.28 ft
30-day trend
Rio Grande Trail runs adjacent — path floods at high water
🛶 River Level
Colorado River near Dotsero
Hanging Lake area / Glenwood Canyon bike path
1340cfs
✅ Normal
Gauge height: 2.75 ft
30-day trend
Glenwood Canyon trail closes when this gauge exceeds ~5,000 CFS
🛶 River Level
Colorado River at Hot Sulphur Springs
Vasquez Peak / Byers Peak / Winter Park area
177cfs
✅ Normal
Gauge height: 5.81 ft
30-day trend
Upper Colorado — good early season snowmelt indicator
🛶 River Level
Animas River at Durango
Animas River Trail / Weminuche Wilderness southern approaches
1000cfs
📈 High
Gauge height: 3.43 ft
30-day trend
Animas River Trail path — flooding risk when gauge high
🛶 River Level
Yampa River at Steamboat Springs
Yampa River Core Trail / Flat Tops access
401cfs
✅ Normal
Gauge height: 2.07 ft
30-day trend
Core Trail flooding indicator; Flat Tops snowmelt proxy
🛶 River Level
Dolores River at Dolores
San Juan Skyway area / McPhee Reservoir
176cfs
✅ Normal
Gauge height: 7.33 ft
30-day trend
San Juan Mountains drainage — good spring runoff indicator
🛶 River Level
Eagle River at Gypsum
Vail area / Holy Cross Wilderness eastern approaches
103cfs
✅ Normal
Gauge height: 1.79 ft
30-day trend
Vail Valley trails — snowmelt timing indicator
💧 Backcountry Water Sources 1
💧 Water Source
Colorado River near Granby
Rocky Mountain NP backcountry / Grand Lake area
—
❓ No data
Trend data building…
30-day trend
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