Climate Change Projections for Water Storage Investment Program (WSIP)
To aid applicants with quantification and monetization of benefits of proposed water storage projects per Chapter 8 of Proposition 1 (Water Code section 79750 et. seq.), the California Water Commission (Commission) developed a Technical Reference which was released in August 2016. These data and model products are companion information to the Technical Reference and were developed to assist applicants for funding under the Water Storage Investment Program (WSIP). The WSIP required applicants for public funding to analyze their proposed projects using climate and sea level conditions for California projected at years 2030 and 2070. The data and model products were developed for the following climate and sea level conditions: - Without-Project 2030 Future Conditions – Year 2030 future condition with projected climate and sea level conditions for a thirty-year period centered at 2030 (climate period 2016-2045) - Without-Project 2070 Future Conditions – Year 2070 future condition with projected climate and sea level conditions for a thirty-year period centered at 2070 (climate period 2056-2085) - 1995 Historical Temperature-detrended Conditions (reference) – Year 1995 historical condition with climate and sea level conditions for a thirty-year period centered at 1995 (reference climate period 1981-2010) ## California Water Commission The California Water Commission consists of nine members appointed by the Governor and confirmed by the State Senate. Seven members are chosen for their expertise related to the control, storage, and beneficial use of water and two are chosen for their knowledge of the environment. The Commission provides a public forum for discussing water issues, advises the Director of the Department of Water Resources on matters within the Department’s jurisdiction, approves rules and regulations, and monitors and reports on the construction and operation of the State Water Project. Proposition 1: The Water Quality, Supply, and Infrastructure Improvement Act approved by voters in 2014, gave the Commission new responsibilities regarding the distribution of public funds set aside for the public benefits of water storage projects, and developing regulations for the quantification and management of those benefits. In 2018, the Commission approved maximum conditional funding amounts for eight projects in the Water Storage Investment Program.
Data files
| Data title and description | Access data | File details | Last updated |
|---|---|---|---|
1995 Historical Temperature-detrended - Climate and VIC results - Monthly Year 1995 historical condition with climate and sea level conditions for a thirty‐year period centered at 1995 (reference climate period 1981‐2010). Climate inputs of precipitation and temperature, plus Variable Infiltration Capacity (VIC) model simulation results of runoff, snow water equivalent, evapotranspiration, and soil moisture. These data and VIC results are provided at a spatial resolution of 1/16th degree (approximately 6 kilometers [km], or approximately 3.75 miles) over California for calendar years 1915 through 2011. Additional description of these data is included in Section 2.12 and Appendix A of the [WSIP Technical Reference](https://data.cnra.ca.gov/dataset/climate-change-projections-wsip-2030-2070/resource/ca0740b9-b538-4056-a8d8-2b32bdaf11a7). | Download | ZIP | 08/14/19 |
1995 Historical Temperature-detrended - Climate and VIC results - Daily Year 1995 historical condition with climate and sea level conditions for a thirty‐year period centered at 1995 (reference climate period 1981‐2010). Climate inputs of precipitation and temperature, plus Variable Infiltration Capacity (VIC) model simulation results of runoff, snow water equivalent, evapotranspiration, and soil moisture. These data and VIC results are provided at a spatial resolution of 1/16th degree (approximately 6 kilometers [km], or approximately 3.75 miles) over California for calendar years 1915 through 2011. Additional description of these data is included in Section 2.12 and Appendix A of the [WSIP Technical Reference](https://data.cnra.ca.gov/dataset/climate-change-projections-wsip-2030-2070/resource/ca0740b9-b538-4056-a8d8-2b32bdaf11a7). | Download | ZIP | 08/14/19 |
2030 Future Conditions - Climate and VIC Results - Monthly Year 2030 future condition with projected climate and sea level conditions for a thirty‐year period centered at 2030 (climate period 2016‐2045). Climate inputs of precipitation and temperature, plus Variable Infiltration Capacity (VIC) model simulation results of runoff, snow water equivalent, evapotranspiration, and soil moisture. These data and VIC results are provided at a spatial resolution of 1/16th degree (approximately 6 kilometers [km], or approximately 3.75 miles) over California for calendar years 1915 through 2011. Additional description of these data is included in Section 2.12 and Appendix A of the [WSIP Technical Reference](https://data.cnra.ca.gov/dataset/climate-change-projections-wsip-2030-2070/resource/ca0740b9-b538-4056-a8d8-2b32bdaf11a7). | Download | ZIP | 08/14/19 |
2030 Future Conditions - Climate and VIC Results - Daily Year 2030 future condition with projected climate and sea level conditions for a thirty‐year period centered at 2030 (climate period 2016‐2045). Climate inputs of precipitation and temperature, plus Variable Infiltration Capacity (VIC) model simulation results of runoff, snow water equivalent, evapotranspiration, and soil moisture. These data and VIC results are provided at a spatial resolution of 1/16th degree (approximately 6 kilometers [km], or approximately 3.75 miles) over California for calendar years 1915 through 2011. Additional description of these data is included in Section 2.12 and Appendix A of the [WSIP Technical Reference](https://data.cnra.ca.gov/dataset/climate-change-projections-wsip-2030-2070/resource/ca0740b9-b538-4056-a8d8-2b32bdaf11a7). | Download | ZIP | 08/14/19 |
2030 Future Conditions - CalSim‐II Model Simulations Year 2030 future condition with projected climate and sea level conditions for a thirty‐year period centered at 2030 (climate period 2016‐2045). CalSim‐II model simulations of storage, flows, and diversions for the major tributaries of the Central Valley for water years 1922 through 2003. Additional description of these data is included in Section 2.12 and Appendix A of the [WSIP Technical Reference](https://data.cnra.ca.gov/dataset/climate-change-projections-wsip-2030-2070/resource/ca0740b9-b538-4056-a8d8-2b32bdaf11a7). | Download | ZIP | 08/14/19 |
2030 Future Conditions - DSM2 Model Simulations Year 2030 future condition with projected climate and sea level conditions for a thirty‐year period centered at 2030 (climate period 2016‐2045). DSM2 model simulations of Sacramento‐San Joaquin River Delta flows and salinity conditions for water years 1922 through 2003. Additional description of these data is included in Section 2.12 and Appendix A of the [WSIP Technical Reference](https://data.cnra.ca.gov/dataset/climate-change-projections-wsip-2030-2070/resource/ca0740b9-b538-4056-a8d8-2b32bdaf11a7). | Download | ZIP | 08/14/19 |
2070 Future Conditions - Climate and VIC Results - Monthly Year 2070 future condition with projected climate and sea level conditions for a thirty‐year period centered at 2070 (climate period 2056‐2085). Climate inputs of precipitation and temperature, plus Variable Infiltration Capacity (VIC) model simulation results of runoff, snow water equivalent, evapotranspiration, and soil moisture. These data and VIC results are provided at a spatial resolution of 1/16th degree (approximately 6 kilometers [km], or approximately 3.75 miles) over California for calendar years 1915 through 2011. Additional description of these data is included in Section 2.12 and Appendix A of the [WSIP Technical Reference](https://data.cnra.ca.gov/dataset/climate-change-projections-wsip-2030-2070/resource/ca0740b9-b538-4056-a8d8-2b32bdaf11a7). | Download | ZIP | 08/14/19 |
2070 Future Conditions - Climate and VIC Results - Daily Year 2070 future condition with projected climate and sea level conditions for a thirty‐year period centered at 2070 (climate period 2056‐2085). Climate inputs of precipitation and temperature, plus Variable Infiltration Capacity (VIC) model simulation results of runoff, snow water equivalent, evapotranspiration, and soil moisture. These data and VIC results are provided at a spatial resolution of 1/16th degree (approximately 6 kilometers [km], or approximately 3.75 miles) over California for calendar years 1915 through 2011. Additional description of these data is included in Section 2.12 and Appendix A of the [WSIP Technical Reference](https://data.cnra.ca.gov/dataset/climate-change-projections-wsip-2030-2070/resource/ca0740b9-b538-4056-a8d8-2b32bdaf11a7). | Download | ZIP | 08/14/19 |
2070 Future Conditions - CalSim-II Model Simulations Year 2070 future condition with projected climate and sea level conditions for a thirty‐year period centered at 2070 (climate period 2056‐2085). CalSim‐II model simulations of storage, flows, and diversions for the major tributaries of the Central Valley for water years 1922 through 2003. | Download | ZIP | 08/14/19 |
2070 Future Conditions - DSM2 Model Simulations Year 2070 future condition with projected climate and sea level conditions for a thirty‐year period centered at 2070 (climate period 2056‐2085). DSM2 model simulations of Sacramento‐San Joaquin River Delta flows and salinity conditions for water years 1922 through 2003. | Download | ZIP | 08/14/19 |
2070 WMW Future Conditions - Climate and VIC Results - Monthly Year 2070 future condition with projected climate and sea level conditions for a thirty‐year period centered at 2070 (climate period 2056‐2085) based on GCM CNRM-CM5 and emission scenario RCP 4.5. More information about the development of the 2070 WMW and use of these supplemental data and model products is included in Section 2.12 and Appendix A of the [WSIP Technical Reference](https://data.cnra.ca.gov/dataset/climate-change-projections-wsip-2030-2070/resource/ca0740b9-b538-4056-a8d8-2b32bdaf11a7). | Download | ZIP | 08/14/19 |
2070 WMW Future Conditions - CalSim-II Model Simulations Year 2070 future condition with projected climate and sea level conditions for a thirty-year period centered at 2070 (climate period 2056-2085) based on GCM CNRM-CM5 and emission scenario RCP 4.5. More information about the development of the 2070 WMW and use of these supplemental data and model products is included in Section 2.12 and Appendix A of the [WSIP Technical Reference](https://data.cnra.ca.gov/dataset/climate-change-projections-wsip-2030-2070/resource/ca0740b9-b538-4056-a8d8-2b32bdaf11a7). | Download | ZIP | 08/14/19 |
2070 DEW Future Conditions - Climate and VIC Results - Monthly Year 2070 future condition with projected climate and sea level conditions for a thirty‐year period centered at 2070 (climate period 2056‐2085) based on GCM HadGEM2‐ES and emission scenario RCP 8.5. More information about the development of the 2070 DEW and use of these supplemental data and model products is included in Section 2.12 and Appendix A of the [WSIP Technical Reference](https://data.cnra.ca.gov/dataset/climate-change-projections-wsip-2030-2070/resource/ca0740b9-b538-4056-a8d8-2b32bdaf11a7). | Download | ZIP | 08/14/19 |
2070 DEW Future Conditions - CalSim-II Model Simulations Year 2070 future condition with projected climate and sea level conditions for a thirty‐year period centered at 2070 (climate period 2056‐2085) based on GCM HadGEM2‐ES and emission scenario RCP 8.5. More information about the development of the 2070 DEW and use of these supplemental data and model products is included in Section 2.12 and Appendix A of the [WSIP Technical Reference](https://data.cnra.ca.gov/dataset/climate-change-projections-wsip-2030-2070/resource/ca0740b9-b538-4056-a8d8-2b32bdaf11a7). | Download | ZIP | 08/14/19 |
Supporting files
| Data title and description | Access data | File details | Last updated |
|---|---|---|---|
Technical Reference This Technical Reference describes concepts and methods for quantifying benefits or adverse impacts that could result from water storage projects proposed for the Water Storage Investment Program (WSIP). | Download | PDF | 05/18/20 |
WSIP Data and Model Product Description - 2030 and 2070 Future Conditions These data and model products are companion information to the Technical Reference and are meant to assist applicants in the analysis of their project benefits for the Water Storage Investment Program (WSIP). The WSIP requires applicants for public funding to analyze their proposed projects using climate and sea level conditions for California projected at years 2030 and 2070. | Download | PDF | 05/18/20 |
WSIP Data and Model Products Description - Extreme Climate Conditions The California Water Commission has developed the following data and model products for applicants to use in the uncertainty analysis required by Section 6004(a)(8)(A) of the Water Storage Investment Program regulations. Per the regulations, an applicant must describe how public physical benefits are affected by two extreme climate scenarios: - 2070 Drier/Extreme-Warming (DEW) Future Conditions – Year 2070 future condition with projected climate and sea level conditions for a thirty-year period centered at 2070 (climate period 2056-2085) based on GCM HadGEM2-ES and emission scenario RCP 8.5, and - 2070 Wetter/Moderate-Warming (WMW) Future Conditions – Year 2070 future condition with projected climate and sea level conditions for a thirty-year period centered at 2070 (climate period 2056-2085) based on GCM CNRM-CM5 and emission scenario RCP 4.5. | Download | PDF | 05/18/20 |
Technical Reference Appendix A - Climate Change and Sea-Level Rise | Download | PDF | 08/14/19 |