Gauge Description:

Min and max flow are just a rough guide. Modern-day flows are limited by maximum output from the river outlet works and power plant which is 48,200 cfs. Historically flows were regularly greater than 100,000 cfs during spring snow melt, but now that can only occur if the reservoir reaches the spillways.

Gage:
Lees Ferry
Historical flow At Lees Ferry

USGS reports flows at several locations along the river.  
Colorado River near Grand Canyon, AZ  
Colorado River above Diamond Creek near Peach Springs, AZ

 

Lake Mead reservoir levels  are reported by the Bureau of Reclamation in feet.   Google maps reports in meters. 

A lake elevation of 1105 feet (sept. 2008) is equivalent to 337 meters. At this elevation the river meets lake near the end of Iceburg Canyon, which is 6 miles from South Cove.

Gauge Information

Name Range Difficulty Updated Level
COLORADO RVR ABV DIAMOND CREEK NR PEACH SPRINGS AZ
usgs-09404200 4000 - 48000 cfs III-IV 02h10m 12200 cfs (running)

gauge graph
RangeWater LevelDifficultyComment
4000 -48000 cfs barely runnable-high runnable III-IV gauge is important or has warning
COLORADO RIVER NEAR GRAND CANYON, AZ
usgs-09402500 4000 - 48000 cfs III-IV 01h25m 10500 cfs (running)

gauge graph
RangeWater LevelDifficultyComment
4000 -48000 cfs barely runnable-high runnable III-IV gauge is important or has warning
COLORADO RIVER AT LEES FERRY, AZ
usgs-09380000 4000 - 48000 cfs III-IV 01h40m 10400 cfs (running)

gauge graph
RangeWater LevelDifficultyComment
4000 -48000 cfs barely runnable-high runnable III-IV gauge is important or has warning

Reports give the public a chance to report on river conditions throughout the country as well as log the history of a river.

When River/Gauge Subject Level Reporter
Colorado @18. Lee's Ferry to Lake Mead [AZ] Account of 03/11/20 n/a Paul Martzen
Colorado @18. Lee's Ferry to Lake Mead [AZ] Account of 03/11/20 n/a Paul Martzen
Colorado @18. Lee's Ferry to Lake Mead [AZ] Account of 11/26/19 n/a paul hubbard
Colorado @18. Lee's Ferry to Lake Mead [AZ] Account of 11/26/19 n/a paul hubbard
Colorado [AZ] moenkopi paddle raft in upset 10,000 Brady Black
[ ] elves chasm n/a wreeves
Colorado [AZ] President Harding Rapid n/a Thomas O'Keefe
Colorado [AZ] Grand Canyon n/a Thomas O'Keefe
[AZ] Rafting on the Grand Canyon n/a Jason Robertson
1y66d08h14m Colorado River [AZ] Grand Canyon happy face a good level Evan Stafford
2y219d17h31m /Colorado-Lees Ferry to Lake Mead (Grand Canyon) roaring 20s 0 cfs christopher pratt
2y219d17h31m /Colorado-Lees Ferry to Lake Mead (Grand Canyon) [AZ] hermit rapid 0 cfs christopher pratt
2y219d17h31m /Colorado-Lees Ferry to Lake Mead (Grand Canyon) [AZ] the gems rapids 0 cfs christopher pratt
2y269d04h40m /Colorado-Lees Ferry to Lake Mead (Grand Canyon) [AZ] Hance Rapid a good level christopher pratt
4y69d03h40m /Colorado-Lees Ferry to Lake Mead (Grand Canyon) [AZ] Grand Canyon Trip 10000 cfs Thomas O'Keefe
7y232d06h57m /Colorado-Lees Ferry to Lake Mead (Grand Canyon) [AZ] Griff Gilbert at Havasu 18000 cfs Dennis Huntley
7y239d06h57m /Colorado-Lees Ferry to Lake Mead (Grand Canyon) [AZ] Griff Gilbert at Deer Creek in the Canyon 18000 cfs Dennis Huntley
7y260d06h57m /Colorado-Lees Ferry to Lake Mead (Grand Canyon) [AZ] Nankoweep Graneries 18000 cfs Dennis Huntley
8y56d04h40m /Colorado-Lees Ferry to Lake Mead (Grand Canyon) [AZ] Roman Ryder @ Lava Falls 0 cfs Roman Ryder
8y177d21h55m /Colorado-Lees Ferry to Lake Mead (Grand Canyon) [AZ] The Big Ditch!! 0 cfs Frank J Perruccio