The resource contains an SQL data that stores hydrologic data for the Colorado River Basin. The database includes precipitation, temperature, naturalized discharge, observed discharge, and tree ring estimated discharge. References of each of the data sources are included in the ODM sources table. The ODM was developed by staff at the Utah Water Research Lab in Logan, Utah. Code was used to format and import all data into the ODM. All the codes are uploaded in this resource. The codes can be downloaded and updated with minimal effort to import additional data or change the formatting. A blank ODM file is included in this resource. ReadMe files are included with each code describing each set of code.