Description: The Levee Flood Protection Zone (LFPZ) maps were developed by the State of California Department of Water Resources as required by Water Code Section 9130 to increase awareness of flood risks associated with State-Federal levees. The maps should not be confused with Federal Emergency Management Agency's Flood Insurance Rate Maps used for the National Flood Insurance Program. They are not showing the same type of flood hazard and they were prepared for different purposes. Levee Flood Protection Zone maps estimate the maximum area that may be flooded if a State-Federal levee fails with flows at maximum capacity that may reasonably be conveyed. These maps specifically focus on flood risks associated with State-Federal levees. Lands within the Levee Flood Protection Zone may also be subject to flooding due to other factors including, but not limited to, levee failure at flows less than design capacity, overtopping of a levee, drainage problems, or other types of flooding from sources on the land side of the levee. Lands not mapped within a Levee Flood Protection Zone may also be subject to flood risk.This polygon dataset represents the areas protected by State Plan of Flood Control (SPFC) levees.
Copyright Text: California Department of Water Resources, with consulting services from HDR, RBF, CH2M-Hill, Wood Rodgers, and Atkins (formerly PBS&J). Adjustments made to the initial datasets made by the Flood Risk Assessment and Mitigation Office staff.
Description: Awareness floodplains identify the 100-year flood hazard areas using approximate assessment procedures. These floodplains will be shown simply as flood prone areas without specific depths and other flood hazard data. Data provided by DWR
Description: Subset of parcel data which intersect the LFPZ 2021 data.This data set represents the assessor parcels from all 58 Counties in California. This data set is compiled from the County file geodatabases that the Department receives from LightBox. The data set will be updated quarterly with updates that LightBox provides. Only those attributes are included that help identify the location, parcel number, and street address of parcels. No owner or tax information is included in this dataset.
Copyright Text: Originator of these data is LightBox.
Description: ***** BACKGROUND *****In late 1996, the Dept of Conservation (DOC) surveyed state and federal agencies about the county boundary coverage they used. As a result, DOC adopted the 1:24,000 (24K) scale U.S. Bureau of Reclamation (USBR) dataset (USGS source) for their Farmland Mapping and Monitoring Program (FMMP) but with several modifications. Detailed documentation of these changes is provided by FMMP and included in the lineage section of the metadata. A dataset named cnty24k97_1 was made available (approximately 2004) through the California Department of Forestry and Fire Protection - Fire and Resource Assessment Program (CDF - FRAP) and the California Spatial Information Library (CaSIL). In late 2006, the Department of Fish and Game (DFG) reviewed cnty24k97_1. Comparisons were made to a high-quality 100K dataset (co100a/county100k from the former Teale Data Center GIS Solutions Group) and legal boundary descriptions from ( http://www.leginfo.ca.gov ). The cnty24k97_1 dataset was missing Anacapa and Santa Barbara islands. DFG added the missing islands using previously-digitized coastline data (coastn27 of State Lands Commission origin), corrected a few county boundaries, built region topology, added additional attributes, and renamed the dataset to county24k. In 2007, the California Mapping Coordinating Committee (CMCC) requested that the California Department of Forestry and Fire Protection (CAL FIRE) resume stewardship of the statewide county boundaries data. CAL FIRE adopted the changes made by DFG and collected additional suggestions for the county data from DFG, DOC, and local government agencies. CAL FIRE incorporated these suggestions into the latest revision, which has was renamed cnty24k09_1. ***** THIS VERSION*****This version of the county dataset was created as a result of an effort to improve the coastal linework. It uses the previous interior linework from the cnty24k13_1 data, but replaces the coastal linework (including islands and inlets) based on NOAA's ERMA coastal dataset (which used NAIP 2010). In addition to the improved linework, additional coding was added to differentiate inlets and bays, islands, and manmade structures such as piers and breakers. Note that some of this coding may not be featured in this specific dataset.This dataset is one of several available datasets that were created as a group designed to work in topological sync with each other. These "paired" datasets include a full county dataset (cnty15_1_full), a basic state dataset (state15_1), an ocean dataset (ocean15_1), and country/state datasets (both full and neighbor-only - cntrystate15_1_full and cntrystate15_1_neighbor, respectively). Further details about these paired datasets can be found in their respective metadata. This specific dataset represents the basic (ie simplified) county dataset without the extra coding that can be found in the "full" dataset. In this dataset, all bays (plus bay islands and constructed features) are merged into the mainland, and coastal features (such as islands and constructed features) are not included. In November 2015, the dataset was adjusted to include a change in the Yuba-Placer county boundary from 2010 that was not yet included in the 14_1 version of the dataset (ord No 5546-B). This change constitutes the diffrence between the 15_1 and 14_1 versions of this dataset.
Copyright Text: U.S. Bureau of Reclamation, California Department of Conservation, California Department of Fish and Game, California Department of Forestry and Fire Protection, National Oceanic and Atmospheric Administration
Description: This feature class contains data about the centerline of an embankment for controlling the waters of the sea, river, or other water bodies. This dataset has been developed to establish a levee database for all levees and levee systems in the State of California, in support of the Department of Water Resources floodplain mapping program for the State.
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Min. Scale: 0.0 Max. Scale: 0.0 Label Placement: esriServerLinePlacementCenterAlong Label Expression: [FEATURE_NAME] Use Coded Values: true Symbol:
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BANK_D
(
type: esriFieldTypeString, alias: Area Bankside Code, length: 25
, Coded Values:
[Non Riverine: Location other than river system (lake, ocean, or other water body)]
, [Left Descending: Left descending bank]
, [Right Descending: Right descending bank]
)
COORDINATE_METHOD_D
(
type: esriFieldTypeString, alias: Coordinate Capture Method, length: 40
, Coded Values:
[Digitized off of quad sheets: Digitized off of quad sheets]
, [Other: Other]
, [Using photogrammetric techniques: Using photogrammetric techniques]
, ...8 more...
)
Description: Boundaries of various types of public agencies with responsibilities that include in part or primarily flood control, system maintenance, and improvement. In California, there are a variety of political entites that are granted self-taxation powers under various California codes in order to perform the basic goal of flood management within an area. This dataset compiles many of the various datasets together to provide the information in one location. It also includes districts that are no longer active political/management entities for archival or historical purposes. The primary type of flood agency in California are known as reclamation districts, and so represent the majority of the records in this database. The quality of the boundary accuracy is highly variable, due to a variety of reasons, including the fact that the original legal boundaries are frequently tied to Swamp Land Survey boundaries that themselves are poorly located by modern mapping standards. This set of boundary delineations represents the latest in a series of nearly 20 significant revisions primarily by DWR Delta Levees Program between 2000-2017 to a dataset first produced by Office of Emergency Services during the 1997 floods. The accuracy and completeness of the data are therefore higher in the Delta than elsewhere. The Division of Flood Management then stored the boundaries in their levee geodatabase that feeds the web mapping application known as FERIX. To produce this final dataset, in 2018 the Division of Engineering Geodetic Branch merged the data used by FERIX, along with other datasets used by the Delta Levees Program, and normalized the attribute table.
Copyright Text: California Department of Water Resources. Contact: gis@water.ca.gov
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