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USGS in Your State

USGS Water Science Centers are located in each state.

PART: A computerized method of base-flow-record estimation

This web site includes information about the use of the PART computer program for analyzing a streamflow record. The version at this site will read streamflow data in the format that is available from USGS web sites.

The computer program PART uses streamflow partitioning to estimate a daily record of groundwater discharge under the streamflow record. The method designates groundwater discharge to be equal to streamflow on days that fit a requirement of antecedent recession, linearly interpolates groundwater discharge for other days, and is applied to a long period of record to obtain an estimate of the mean rate of groundwater discharge.

PART Downloads

• Download PART software executable files and sample data sets (695kb ZIP file, updated January 2007)
• Download README file describing files included in ZIP file
• Download fortran source code (10KB ZIP file)
• Download user's manual (50KB PDF file)

Background Literature

• The user's manual does not include complete explanation of the computer program; the program user is referred to the following documentation:
  • Computer programs for describing the recession of groundwater discharge and for estimating mean ground-water recharge and discharge from streamflow records: USGS WRIR 98-4148.
• Obtaining streamflow data from a USGS web site.
• USGS Water Resources Applications Software
• USGS Groundwater and Surface-Water Interactions web site.

Point of Contact

Comments about this site can be sent to Paul Barlow.