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This dataset represents a water shortage vulnerability analysis performed by DWR using Small Water System boundaries pulled from the SWRCB (State Water Resource Control Board) water system boundary layer (SABL). The water systems were then restricted to only active water systems with under 3000 connections that had SDWIS (Safe Drinking Water Information System) data. This data is from the 2024 analysis.
This is a statewide effort to systematically and holistically consider water shortage vulnerability statewide of rural communities, focusing on domestic wells and state small water systems serving between 4 and 14 connections. The indicators and scoring methodology will be revised as better data become available and stake-holders evaluate the performance of the indicators, datasets used, and aggregation and ranking method used to aggregate and rank vulnerability scores. Additionally, the scoring system should be adaptive, meaning that our understanding of what contributes to risk and vulnerability of drought and water shortage may evolve. These three feature datasets contain the units of analysis (modified PLSS sections, block groups, small water systems service areas) with the model indicators for vulnerability in the attribute table. Model indicators are calculated for each unit of analysis according to the Vulnerability Scoring documents provided by Julia Ekstrom (Dvision of Regional Assistance).
All three feature classes are DWR analysis zones that are based off existing GIS datasets. The spatial data for the sections feature class is extracted from the Well Completion Reports PLSS sections to be aligned with the work and analysis that SGMA is doing. These are not true PLSS sections, but a version of the projected section lines in areas where there are gaps in PLSS. The spatial data for the Census block group feature class is downloaded from the Census. ACS (American Communities Survey) data is joined by block group, and statistics calculated by DWR have been added to the attribute table. The spatial data... |
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This dataset represents a water shortage vulnerability analysis performed by DWR using Small Water System boundaries pulled from the SWRCB (State Water Resource Control Board) water system boundary layer (SABL). The water systems were then restricted to only active water systems with under 3000 connections that had SDWIS (Safe Drinking Water Information System) data. This data is from the 2024 analysis.
This is a statewide effort to systematically and holistically consider water shortage vulnerability statewide of rural communities, focusing on domestic wells and state small water systems serving between 4 and 14 connections. The indicators and scoring methodology will be revised as better data become available and stake-holders evaluate the performance of the indicators, datasets used, and aggregation and ranking method used to aggregate and rank vulnerability scores. Additionally, the scoring system should be adaptive, meaning that our understanding of what contributes to risk and vulnerability of drought and water shortage may evolve. These three feature datasets contain the units of analysis (modified PLSS sections, block groups, small water systems service areas) with the model indicators for vulnerability in the attribute table. Model indicators are calculated for each unit of analysis according to the Vulnerability Scoring documents provided by Julia Ekstrom (Dvision of Regional Assistance).
All three feature classes are DWR analysis zones that are based off existing GIS datasets. The spatial data for the sections feature class is extracted from the Well Completion Reports PLSS sections to be aligned with the work and analysis that SGMA is doing. These are not true PLSS sections, but a version of the projected section lines in areas where there are gaps in PLSS. The spatial data for the Census block group feature class is downloaded from the Census. ACS (American Communities Survey) data is joined by block group, and statistics calculated by DWR have been added to the attribute table. The spatial data... |
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California Department of Water Resources using various publicly available datasets. Please refer to model documentation for full source information. |
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5000 |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This feature class includes water shortage vulnerability indicators and scores from an analysis done by CA Department of Water Resources Small Water System boundaries pulled from the SWRCB (State Water Resource Control Board) water system service area boundary layer (SABL). The water systems were then restricted to only active water systems with under 3000 connections that had SDWIS (Safe Drinking Water Information System) data. Therefore, small water systems that do not have spatial boundaries available, or were inactive at the time of analysis may not be reflected in this dataset. Indicators were pulled from various data sources, please refer to the Drought and Water Shortage Vulnerability Scoring: Small Water Systems documentation for more information on how the indicators were calculated and weighted. Please refer to the source metadata for more information on completeness. The goal of this data is to provide a spatial representation of various factors that can affect water shortage vulnerability in small water systems. The category of small water systems intends to focus on what is required to be planned for by small water systems, following SB 552. This is intended to cover active water systems with under 3000 services connections.</SPAN></P></DIV></DIV></DIV> |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 11 0;"><SPAN>The original source projection of the DWR GIS atlas dataset was Web Mercator (Auxiliary Sphere), WGS84. For copies of data in original projection, please contact DWR directly.</SPAN></P><P><SPAN>Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations. This dataset is intended for vulnerability assessment and data exploration, not as a predictive model of water shortage. Indicators are not updated in real-time.</SPAN></P></DIV></DIV></DIV> |
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i07_Water_Shortage_Vulnerability_Small_Water_Systems |
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["2024","dry well","climate change","drinking water","domestic wells","water","groundwater","vulnerability","water shortage","environment","drought","California","water shortage contingency plan","California","surface water","well management","wells","domestic","water shortage vulnerability","DWR GIS Atlas"] |
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en-US |
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150000000 |
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