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• 09:09, 29 December 2022 RiverRunnersForWilderness talk contribs created page Realtime Water Flows for Grand Canyon (Created page with "The United States Geological Survey (USGS) provides realtime water flow data for the Colorado River in Grand Canyon. This data is typically recorded at 15 minute intervals and transmitted on-line every 1 to 4 hours, depending on the data relay technique used. You can see the USGS realtime water flow at Phantom Ranch Arizona by clicking [http://waterdata.usgs.gov/nwis/uv?09402500 here.] 600px Click '''here''' to re...")