The University of San Francisco USF Scholarship: a digital repository @ Gleeson Library | Geschke Center Master's Projects and Capstones Theses, Dissertations, Capstones and Projects Fall 12-13-2019 California Stream Condition Index (CSCI) Score Analysis of Streams Sampled from 1998 to 2017 in the San Francisco Bay Region Jenna Rais [email protected] Follow this and additional works at: https://repository.usfca.edu/capstone Part of the Environmental Indicators and Impact Assessment Commons, Environmental Monitoring Commons, Natural Resources Management and Policy Commons, Terrestrial and Aquatic Ecology Commons, and the Water Resource Management Commons Recommended Citation Rais, Jenna, "California Stream Condition Index (CSCI) Score Analysis of Streams Sampled from 1998 to 2017 in the San Francisco Bay Region" (2019). Master's Projects and Capstones. 975. https://repository.usfca.edu/capstone/975 This Project/Capstone is brought to you for free and open access by the Theses, Dissertations, Capstones and Projects at USF Scholarship: a digital repository @ Gleeson Library | Geschke Center. It has been accepted for inclusion in Master's Projects and Capstones by an authorized administrator of USF Scholarship: a digital repository @ Gleeson Library | Geschke Center. For more information, please contact [email protected]. California Stream Condition Index (CSCI) Score Analysis of Streams Sampled from 1998 to 2017 in the San Francisco Bay Region By: Jenna Swan Rais MSEM Masters Project December 2019 1 Table of Contents List of Tables ............................................................................................................................................... 5 List of Figures .............................................................................................................................................. 5 Acronyms and Abbreviations ...................................................................................................................... 7 Abstract ...................................................................................................................................................... 8 Introduction ................................................................................................................................................ 8 History of streams in California ............................................................................................................... 8 Stream habitat in California .................................................................................................................. 11 Shift in California’s stream landscape ................................................................................................... 12 Where water comes from in California ................................................................................................. 12 How water is currently used in California ............................................................................................. 13 Stream quality in the San Francisco Bay region .................................................................................... 14 California’s water regulators ................................................................................................................. 15 Tools for measuring stream quality ...................................................................................................... 16 California Stream Condition Index (CSCI) .............................................................................................. 17 Methods ................................................................................................................................................... 19 Data acquisition .................................................................................................................................... 19 Analyses of data .................................................................................................................................... 20 ArcGIS spatial analysis ....................................................................................................................... 20 Statistical analyses ............................................................................................................................ 24 Results ...................................................................................................................................................... 25 CSCI, land use, and basic metrics .......................................................................................................... 25 Watershed analysis ............................................................................................................................... 27 Stream analyses .................................................................................................................................... 29 CSCI score variation by year .............................................................................................................. 29 Alameda Creek .................................................................................................................................. 29 Coyote Creek ..................................................................................................................................... 29 Kirker Creek ...................................................................................................................................... 29 Las Trampas Creek ............................................................................................................................ 30 Pinole Creek ...................................................................................................................................... 30 San Lorenzo Creek............................................................................................................................. 30 San Mateo Creek ............................................................................................................................... 30 2 San Pablo Creek ................................................................................................................................ 30 Saratoga Creek .................................................................................................................................. 30 Stevens Creek.................................................................................................................................... 31 CSCI score variation by year and analyzed by land cover .................................................................. 35 Ten focus streams ............................................................................................................................. 39 Alameda Creek .................................................................................................................................. 40 Coyote Creek ..................................................................................................................................... 40 Kirker Creek ...................................................................................................................................... 40 Las Trampas Creek ............................................................................................................................ 40 Pinole Creek ...................................................................................................................................... 40 San Lorenzo Creek............................................................................................................................. 41 San Mateo Creek ............................................................................................................................... 41 San Pablo Creek ................................................................................................................................ 41 Saratoga Creek .................................................................................................................................. 41 Stevens Creek.................................................................................................................................... 42 Discussion ................................................................................................................................................. 45 Spatial analysis of all CSCI scores versus land cover, and basic metrics ................................................ 45 Watershed analysis of CSCI scores ........................................................................................................ 45 Stream analyses of CSCI scores over time ............................................................................................. 46 Stream analyses of CSCI scores categorized by land cover ................................................................... 46 Conclusions ............................................................................................................................................... 47 CSCI scores have a trend based on land cover ...................................................................................... 47 Sample according to land cover ............................................................................................................ 48 Analyze CSCI data at a stream level scale ............................................................................................