Description: These data are intended for geographic display and analysis on the planning level and for all levels from the local neighborhood upward to smaller regional scales. The data is derived from remote imaging sources and may be displayed and analyzed with relative confidence from scales of 1:2400 to smaller. No responsibility is assumed by the Riverside County Flood Control and Water Conservation District in the use of these data.Supplemental Information: These data are derived from engineering drawings and image interpretation under the guidance of California Licensed Professional Land Surveyors. Every effort is made to insure the accuracy and precision of the data set. Additional information concerning the evolution and descent of these data may be acquired by contacting the GIS section of Riverside County Flood Control and Water Conservation District at RCFCGIS@RCFlood.org.
Definition Expression: N/A
Copyright Text: Credit for this material belongs solely to the Riverside County Flood Control and Water Conservation District.
Description: These data are intended for geographic display and analysis on the planning level and for all levels from the local neighborhood upward to smaller regional scales. The data is derived from remote imaging sources and may be displayed and analyzed with relative confidence from scales of 1:2400 to smaller. No responsibility is assumed by the Riverside County Flood Control and Water Conservation District in the use of these data.Supplemental Information: These data are derived from engineering drawings and image interpretation under the guidance of California Licensed Professional Land Surveyors. Every effort is made to insure the accuracy and precision of the data set. Additional information concerning the evolution and descent of these data may be acquired by contacting the GIS section of Riverside County Flood Control and Water Conservation District at RCFCGIS@RCFlood.org.
Definition Expression: N/A
Copyright Text: Credit for this material belongs solely to the Riverside County Flood Control and Water Conservation District.
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Description: This data are intended for geographic display and analysis on the planning level and for all levels from the local neighborhood upward to smaller regional scales. The data is derived from remote imaging sources and may be displayed and analyzed with relative confidence from scales of 1:2400 to smaller. No responsibility is assumed by the Riverside County Flood Control and Water Conservation District in the use of these data.Supplemental Information: These data are derived from engineering drawings and image interpretation under the guidance of California Licensed Professional Land Surveyors. Every effort is made to insure the accuracy and precision of the data set. Additional information concerning the evolution and descent of these data may be acquired by contacting the GIS section of Riverside County Flood Control and Water Conservation District at RCFCGIS@RCFlood.org.
Definition Expression: N/A
Copyright Text: Credit for this material belongs solely to the Riverside County Flood Control and Water Conservation District.
Description: This data are intended for geographic display and analysis on the planning level and for all levels from the local neighborhood upward to smaller regional scales. The data is derived from remote imaging sources and may be displayed and analyzed with relative confidence from scales of 1:2400 to smaller. No responsibility is assumed by the Riverside County Flood Control and Water Conservation District in the use of these data.Supplemental Information: These data are derived from engineering drawings and image interpretation under the guidance of California Licensed Professional Land Surveyors. Every effort is made to insure the accuracy and precision of the data set. Additional information concerning the evolution and descent of these data may be acquired by contacting the GIS section of Riverside County Flood Control and Water Conservation District at RCFCGIS@RCFlood.org.
Definition Expression: N/A
Copyright Text: Credit for this material belongs solely to the Riverside County Flood Control and Water Conservation District.
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Description: This data contains approximate alignments of regional stormwater drainage facilities, water quality and conservation projects and other associated projects budgeted in the District's Five Year Capital Improvement Plan. Relevant information such as the project's zone number, supervisorial district, and project number are included.
Definition Expression: N/A
Copyright Text: RCFC-GIS merged CIP data from Planning and Desgin and Construction to create a final CIP feature class 11/20/18.
Updated: 11/19/2018 by RCFC – Planning utilizing project descriptions provided by District staff, Riverside County, Cities within the incorporated areas, Water Districts and several external agencies such as USACOE, JCSD and MJPA.
Description: This data is intended for geographic display and analysis on the planning level and for all levels from the local neighborhood upward to smaller regional scales. The regulatory definition of an MS4 (40 CFR 122.26(b)(8)) is "a conveyance or system of conveyances (including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, or storm drains): (i) Owned or operated by a state, city, town, borough, county, parish, district, association, or other public body (created to or pursuant to state law) including special districts under state law such as a sewer district, flood control district or drainage district, or similar entity, or an Indian tribe or an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the Clean Water Act that discharges into waters of the United States. (ii) Designed or used for collecting or conveying stormwater; (iii) Which is not a combined sewer; and (iv) Which is not part of a Publicly Owned Treatment Works (POTW) as defined at 40 CFR 122.2."No responsibility is assumed by the Riverside County Flood Control and Water Conservation District in the use of these data.
Definition Expression: N/A
Copyright Text: RCFC & WCD, MS4 Program Co-Permittees
Description: This data is intended for geographic display and analysis, and is for identifying the areas where tax monies for each separate zone is utilized.Supplemental_Information: This data is derived from enginerring drawings and image interpretation under the guidance of California Licensed Professional Land Surveyors. Every effort is made to ensure the accuracy and precision of the boundaries. Additional information regarding the development of this layer may be acquired by contacting the GIS section of Riverside County Flood Control and Water Conservation District at RCFCGIS@RCFlood.org.
Definition Expression: N/A
Copyright Text: Credit for this material belongs solely to the Riverside County Flood Control and Water Conservation District.
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Description: This data are intended for geographic display and analysis on the planning level and for all levels from the local neighborhood upward to smaller regional scales. The data is derived from remote imaging sources and may be displayed and analyzed with relative confidence from scales of 1:2400 to smaller. No responsibility is assumed by the Riverside County Flood Control and Water Conservation District in the use of these data.Supplemental Information: These data are derived from engineering drawings and image interpretation under the guidance of California Licensed Professional Land Surveyors. Every effort is made to insure the accuracy and precision of the data set. Additional information concerning the evolution and descent of these data may be acquired by contacting the GIS section of Riverside County Flood Control and Water Conservation District at RCFCGIS@RCFlood.org.
Definition Expression: N/A
Copyright Text: Credit for this material belongs solely to the Riverside County Flood Control and Water Conservation District.
Description: This data set of polygon features represents Riverside County's Supervisorial districts as of 2001.The Board of Supervisors is the governing body of the County, certain special districts, and the Housing Authority. The Board enacts ordinances and resolutions, adopts the annual budget, approves contracts, appropriates funds, determines land use zoning for the unincorporated area, appoints certain County officers and members of various boards and comissions.Riverside County's Supervisorial district boundaries are redrawn every 10 years reflecting the county's population as reported by the decennial US census. One such redrawing occured in 2001, as illustrated by this feature class.Additional information on a given polygon can be retreived from the attribute table, including the name of the represented district and the name of its appointed supervisor.
Description: This data set of polygon features represents Riverside County's Supervisorial districts as of 2011.The Board of Supervisors is the governing body of the County, certain special districts, and the Housing Authority. The Board enacts ordinances and resolutions, adopts the annual budget, approves contracts, appropriates funds, determines land use zoning for the unincorporated area, appoints certain County officers and members of various boards and comissions.Riverside County's Supervisorial district boundaries are redrawn every 10 years reflecting the county's population as reported by the decennial US census. The most recent redrawing occured in Fall 2011 based on the April 2010 census, as illustrated by this feature class.Additional information on a given polygon can be retreived from the attribute table, including the name of the represented district and the name of its appointed supervisor.
Description: This data set of polygon features represents Riverside County's Supervisorial districts. Created from using ESRI Redistricting Online 2.36 Application. The ESRI Redistricting Online 2.36 Application used Census and PL 94-171 data. Supervisorial district boundaries were adopted by the Riverside County Board of Supervisors on 12/14/2021 by Resolution No. 2021-215. a Resolution of the Board of Supervisors of the County of Riverside Establishing New Supervisorial Boundaries in Riverside County in Accordance with Redistricting Laws. All Districts. LINK TO RESOLUTION Districts 2, 4 and 5 become effective in January 2023.Districts 1 and 3 become effective in January 2025.
Description: This data set of polygon features represents Riverside County's Supervisorial districts. Created from using ESRI Redistricting Online 2.36 Application. The ESRI Redistricting Online 2.36 Application used Census and PL 94-171 data. Supervisorial district boundaries were adopted by the Riverside County Board of Supervisors on 12/14/2021 by Resolution No. 2021-215. a Resolution of the Board of Supervisors of the County of Riverside Establishing New Supervisorial Boundaries in Riverside County in Accordance with Redistricting Laws. All Districts. LINK TO RESOLUTION Districts 2, 4 and 5 become effective in January 2023.Districts 1 and 3 become effective in January 2025.
Description: This data set of polygon features represents Riverside County's Incorporated City Boundaries. Topology has been run and all gaps and overlaps have been fixed. The data has been adjusted to match Riverside County Parcel Boundaries. The city name field is used to represent the citys' name. Every polygon that represents an incorporated city must have a city name.Maintained by Stella Spadafora, 05/2015
Description: This data set of polygon features represents Riverside County's Incorporated City Boundaries. Topology has been run and all gaps and overlaps have been fixed. The data has been adjusted to match Riverside County Parcel Boundaries. The city name field is used to represent the citys' name. Every polygon that represents an incorporated city must have a city name.Maintained by Stella Spadafora, 05/2015
Description: This data is intended for geographic display and analysis, and is for identifying the areas that lie within the boundaries of the District.Supplemental_Information: This data is derived from engineering drawings and image interpretation under the guidance of California Licensed Professional Land Surveyors. Every effort is made to ensure the accuracy and precision of the boundaries. Additional information regarding the development of this layer may be acquired by contacting the GIS section of Riverside County Flood Control and Water Conservation District at RCFCGIS@RCFlood.org.
Definition Expression: N/A
Copyright Text: Credit for this material belongs solely to the Riverside County Flood Control and Water Conservation District.
Description: The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Management Agency (FEMA), and any Letters Of Map Revision (LOMRs) that have been issued against those databases since their publication date. It is updated on a monthly basis. The FIRM Database is the digital, geospatial version of the flood hazard information shown on the published paper FIRMs. The FIRM Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The FIRM Database is derived from Flood Insurance Studies (FISs), previously published FIRMs, flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by FEMA. The NFHL is available as State or US Territory data sets. Each State or Territory data set consists of all FIRM Databases and corresponding LOMRs available on the publication date of the data set. The specification for the horizontal control of FIRM Databases is consistent with those required for mapping at a scale of 1:12,000. This file is georeferenced to the Earth's surface using the Geographic Coordinate System (GCS) and North American Dataum of 1983 (NSRS-2007).Edited 07/11/2023
Description: The FIRM Database is the digital, geospatial version of the flood hazard information shown on the published paper FIRMs. The FIRM Database depicts flood risk information and supporting data used to develop the risk data. The FIRM Database is derived from Flood Insurance Studies (FISs), previously published FIRMs, flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by FEMA. Edited 4/07/22
Definition Expression: N/A
Copyright Text: Federal Emergency Management Agency (FEMA)
Description: -These 1%-annual chance floodplains were developed using approximate methods. Base flood elevations, depths, and velocities are not available. -Flood insurance is available by FEMA through the National Flood Insurance Rate program. These are not FEMA flood hazard areas, therefore, flood insurance is not mandatory in DWR floodplains. -RCFC received several sets of maps from DWR. The first sets included a page of backup for each floodplain. This backup consists of flow rates, depth and velocities ranges, and other data. The most recent set of digital files was received on July 25, 2011.
Definition Expression: N/A
Copyright Text: The State of California Department of Water Resources but updated regularly by FPM staff as inquiries and development is proposed
Description: San Gorgonio River and Smith Creek, June 1973.San Gorgonio River and Tributaries, October 1974.Santa Ana River Mainstem Project, August 1991.Wildomar Valley, 100-Year Flood Plain Limits, October 1979, as last revised May 1986Cactus Valley, 100-Year Flood Plain and Floodway Limits, March 1980.Cabazon Flood Study, Flood Hazard Areas, June 1980Lakeview & Sierra Vista Tracts, 100-Year Floodplain Limits, October 1990Tucalota Creek, October 1984Long Valley Wash, October 2002Paloma Wash, October 2002Warm Springs Creek, February 2003Juniper Flats Floodplain, May 2006Flood Insurance Study for Oasis Area of the Coachella Valley, April 2003
Definition Expression: N/A
Copyright Text: Floodplain Management staff of Riverside County Flood Control and Water Conservation District, USACE (United States Army Corps of Engineers)
Description: Polygon feature class to graphically represent taxable parcels of land within Riverside County. This layer is created by joining PARCELS feature class attribute table with Assessor tables to provide additional information about each parcel.
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Description: The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water bodies. Reaches are also defined on waterbodies and the approximate shorelines of the Great Lakes, the Atlantic and Pacific Oceans and the Gulf of Mexico. The NHD also incorporates the National Spatial Data Infrastructure framework criteria established by the Federal Geographic Data Committee.