,Department of Water Resources (DWR), Geodetic Branch, Cadastral Surveys reviewed this boundary in July, 2009, and agreed with the linework along with the description below as produced by Joel Dudas in 2002. This boundary was originally produced under the direction of Ray Irving, LS 3278 in August, 1993 (then Chief of the Geodetic Branch) at the request of Margit Aramburu with the Delta Protection Commission. The boundary, at that time, was paper form. The details of how it was prepared are described in the Memorandum dated July 29, 1994, along with additional correspondence between Ray Irving and Margit Aramburu on comments, changes & revisions during the process and are on file at Cadastral Surveys, DWR. (End 2009)***,Delta boundary version 2002.4 Delineates the legal Delta established under the Delta Protection Act (Section 12220 of the Water Code) passed in 1959. This boundary file has been reviewed by a variety of relevant professionals and is considered to be accurate. The exact accuracy is somewhat uncertain, but can be considered acceptable for mapping at 1:24000. The original topographic maps containing the drawn delta border were scanned from the Department of Water Resources. Images were registered to 1:24,000 USGS DRG's in ArcView (ESRI) utilizing imagewarp extension. The Delta boundary was digitized from the registered images. Accuracy within acceptable 7.5 Minute USGS map accuracy standards (1:24000 scale). The original legal boundary maps obtained from the Delta Protection Commission were compiled by DWR Land & Right of Way sometime in the early 1980's. They were based from the legal description in section 12220 of the Water Code, with ambiguities in the Code addressed by the individuals involved in the mapping project at that time. One revision was made to the original maps in the vicinity of Point Pleasant, and is the only difference between this and the 4.2001 version of the legal Delta boundary Arc/INFO coverage.,

Water Plan Planning Areas as part of the detailed Analysis’s Units (DAU) dataset. DAU boundaries match Cal-Fire dataset “cnty24k09_1_poly”.

,This is a line dataset that delineates the extent of State Water Project construction divisions. The locations of the construction divisions were derived from DWR records.,This dataset is current as of 3/20/2024.,

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This dataset is a feature class identifying all dams currently under the jurisdiction of the Division of Safety of Dams (DSOD). The dataset is extracted from DSOD internal records and contains basic information about the dam including the type of construction, basic dimensions such as height, length, and maximum storage capacity; abbreviated owner information to identify the entity legally responsible for the dam; an assessment of the downstream hazard associated with the dam; an assessment of the current condition of the dam; and indication as to whether the dam is operating at a restricted storage level. Several dams span rivers that define county boundaries, so DSOD references the right abutment of the dam to identify the location of the structure and to associate it with a singular administrative subdivision of California.

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This centerline has a multitude of potential uses for project tracking and spatial analysis. It is suitable for use as the base for a linear referencing system to record information about the State Water Project canal system, as a component of a hydrologic model, or simply as a cartographic element on both small and large scale maps. Canal centerlines were derived from the data in i17_StateWaterProject_Basemap. Pipeline and reservoir centerlines were copied from i17_StateWaterProject_Lines. The associated data are considered DWR enterprise GIS data, which meet all appropriate requirements of the DWR Spatial Data Standards, specifically the DWR Spatial Data Standard version 2.1, dated March 9, 2016. DWR makes no warranties or guarantees —either expressed or implied — as to the completeness, accuracy, or correctness of the data. DWR neither accepts nor assumes liability arising from or for any incorrect, incomplete, or misleading subject data.

This dataset shows the Delta Primary and Secondary zones. The Primary Zone is defined as “Delta land and water area of primary state concern and statewide significance”. The Primary Zone is the area covered by the Delta Protection Act which directs the Delta Protection commission to create resource management plans for the Primary Zone. The Secondary Zone is the area outside the Primary Zone and within the Legal Delta. It includes cities such as Stockton, Lathrop, West Sacramento, and Oakley. Development and projects within the Secondary Zone are covered by the California Environmental Quality Act. Comments, problems, improvements, updates, or suggestions should be forwarded to gis@water.ca.gov.

,The Central Valley Flood Protection Plan (CVFPP) recommends that the California Department of Water Resources (DWR) develop a system for tracking performance of the flood system, including the following actions:,• Track the outcomes from flood investments to demonstrate value.,• Monitor and track outcomes of multi-benefit projects over time.,• Create a tracking system of operations and maintenance investments and outcomes to demonstrate the value that Local Maintaining Agencies attain for their investments.,• Track and report changes in the hydrologic and sea level rise conditions and subsidence over time through updates to the Flood System Status Report (FSSR),These recommendations stem from progressive work during the development of the 2012 CVFPP and subsequent 2017 CVFPP update. The DWR Flood Performance Tracking System tracks the CVFPP outcomes related to: (1) improving flood risk management and (2) enhancing ecosystem vitality. This tracking system has the ability to track the status, trends, and changes over time of the ecosystem (including the Conservation Strategy’s Measurable Objectives [CSMOs] as of 2016) outlined in the Conservation Strategy document here: https://cawaterlibrary.net/wp-content/uploads/2017/10/ConservStrat-Nov2016.pdf along with the Flood System metrics outlined in the Flood System Status Report here: https://water.ca.gov/Programs/Flood-Management/Flood-Planning-and-Studies/Central-Valley-Flood-Protection-Plan.,The associated data are considered DWR enterprise GIS data, which meet all appropriate requirements of the DWR Spatial Data Standards, specifically the DWR Spatial Data Standard version 3.1, dated September 11, 2019.,This data set was not produced by DWR. Data were originally developed and supplied by ESA, under contract to California Department of Water Resources. DWR makes no warranties or guarantees — either expressed or implied — as to the completeness, accuracy, or correctness of the data. DWR neither accepts nor assumes liability arising from or for any incorrect, incomplete, or misleading subject data.,Comments, problems, improvements, updates, or suggestions should be forwarded to gis@water.ca.gov.,

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