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USGS Groundwater Information

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New & Noteworthy

*  New!: Press Release: Deficit in Nation's Aquifers Accelerating

*  new: MODFLOW-USG: An Unstructured Grid Version of MODFLOW

*  new: USGS Threatened and Endangered Stations

*  Report to Congress: Progress Toward Establishing a National Assessment of Water Availability and Use

*  Fact Sheet: Understanding and Managing the Effects of Groundwater Pumping on Streamflow

*   Annotated List of Classic Pre-1980 USGS Groundwater Papers on Quantitative Groundwater-Flow Analysis

*   WaterNow: Get current water conditions by text or email

*   Circular: Streamflow Depletion By Wells: Understanding and Managing the Effects of Groundwater Pumping on Streamflow

USGS in Your State

USGS Water Science Centers are located in each state.

 [Map: There is a USGS Water Science Center office in each State.] Washington Oregon California Idaho Nevada Montana Wyoming Utah Colorado Arizona New Mexico North Dakota South Dakota Nebraska Kansas Oklahoma Texas Minnesota Iowa Missouri Arkansas Louisiana Wisconsin Illinois Mississippi Michigan Indiana Ohio Kentucky Tennessee Alabama Pennsylvania West Virginia Georgia Florida Caribbean Alaska Hawaii and Pacific Islands New York Vermont New Hampshire Maine Massachusetts South Carolina North Carolina Rhode Island Virginia Connecticut New Jersey Maryland-Delaware-D.C.

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

Background Literature

Point of Contact

Comments about this site can be sent to Paul Barlow.

Other USGS Groundwater Software

The USGS develops groundwater RSS, water-quality, surface-water, and other water-resources software for use by the USGS in fulfilling its mission. Most of this software is available online for download at no charge.

Disclaimers and Notices

Please refer to the USGS Software User Rights Notice for complete use, copyright, and distribution information. The USGS provides no warranty, expressed or implied, as to the correctness of the furnished software or the suitability for any purpose. The software has been tested, but as with any complex software, there could be undetected errors. Users who find errors are requested to report them to the USGS.

References to non-USGS products, trade names, and (or) services are provided for information purposes only and do not constitute endorsement or warranty, express or implied, by the USGS, U.S. Department of Interior, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy.


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URL: http://water.usgs.gov/ogw/part/index.html
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Page Last Modified: Thursday, 03-Jan-2013 20:12:35 EST