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)