This dataset represents a partial record of Rio Grande time-series flow data from locations in Dona Ana County and Sierra County, New Mexico; El Paso County and Hudspeth County, Texas; and Chihuahua, Mexico. Records from 1908 to 2010 are presented from 79 sources consisting of 11 drains, 8 canals, 6 laterals, 34 waste-ways, and 20 stream gaging stations. In 2015 the US Geological Survey obtained scanned original paper documentation from the Bureau of Reclamation El Paso Field Office and electronic Lotus 123 files of flow records from the Bureau of Reclamation Upper Colorado Region. These records were digitized and transcribed into Excel files. This data release consists of both the Excel files containing daily, monthly, and yearly flows and the PDF files of the scanned original documents. No original documents are included for data taken from the Lotus 123 files. Average daily flows are given in units of second-feet-day (SFD), where one SFD is the volume of water accumulated by a flow of one cubic foot per second over 24 hours.