The CSI is TU’s original conservation planning application. Beginning in 2010, the CSI provided the first range-wide summary of watershed-scale information related to salmonid distribution, population attributes, habitat conditions, and future threats. Information from the CSI served as the base data for TU’s 2015 State of the Trout report. The CSI approach has evolved into the Conservation Portfolio. The links below provide access to archival CSI information, including species summaries, tabular and map results, and a methods document.