New & Noteworthy

 CFP: Conduit Flow Process for MODFLOW-2005

 GSFLOW: A New Model for Simulation of Ground-Water and Surface-Water Interaction

 SEAWAT v4: Simulation of 3D Variable-Density Ground-Water Flow and Transport

USGS in Your State

USGS Water Science Centers are located in each state.

Collection of Basic Records (CBR) Program

Each year, Districts are asked to evaluate the District CBR wells, confirm that the District CBR wells continue to meet CBR criteria, and, verify the information in the current Ground-Water CBR Table listed below. Changing or replacing wells is not encouraged, but sometimes necessary. If changes are needed please contact Bill Cunningham or Linda Geiger.

• CBR Program: Guidelines for Index Well Selection
• History of CBR Well Selection(1996)
• Ground-Water CBR Tables (by Fiscal Year)
  • Fiscal Year 1997
  • Fiscal Year 1998
  • Fiscal Year 1999
  • Fiscal Year 2000
  • Fiscal Year 2001
  • Fiscal Year 2002
  • Fiscal Year 2003
  • Fiscal Year 2004
  • Fiscal Year 2005
  • Fiscal Year 2006
  • Fiscal Year 2007