IHA Papers

The following papers provide information on the use and utility of The Nature Conservancy's Indicators of Hydrologic Alteration (IHA) software.

• Richter, B.D., J.V. Baumgartner, J. Powell, and D.P. Braun 1996. "A Method for Assessing Hydrologic Alteration Within Ecosystems". Conservation Biology 10:1163-1174. (1083 .pdf file)
  The article above is posted to nature.org with permission from Blackwell Science, publisher of Conservation Biology.
• Richter, B.D, J.V. Baumgartner, R. Wigington, and D.P. Braun, "How Much Water Does a River Need?" Freshwater Biology 37, 231-249. (1475kb .pdf file)
  This paper is posted to nature.org with permission from Blackwell Science, publisher of Conservation Biology.
• Richter, B.D., J.V. Baumgartner, D.P. Braun, and J. Powell. 1998. “A Spatial Assessment of Hydrologic Alteration Within a River Network.” Regulated Rivers 14:329-340. (.pdf, 772 kb)