20220608
14594800
1.0
FALSE
Fault_Zones
002
6106189.498128
6796699.162053
2098787.949389
2320574.495645
1
Projected
GCS_WGS_1984
WGS_1984_Web_Mercator_Auxiliary_Sphere
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Linear Unit: Meter (1.000000)
ItemDescription
20220608
14464700
20220608
14464700
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5000
The purpose of this data layer is to show all known fault zones in Riverside County. This includes Alquist-Priolo and County Geology fault zone polygons. The accuracy of this data allows for general reference analysis and mapping but for detailed spatial calculations and confirmation of location, please contact the Chief Geologist of Riverside County at (951) 955-6863.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN><SPAN>County Faults/Fault Zones (Per Riverside County General Plan 10/2003). Alquist-Priolo Earthquake Fault Zones have been designated by the California Division of Mines and Geology for the Elsinore, San Jacinto, and San Andreas fault zones in Riverside County. Within the rapidly growing county, State A-P mapping has not kept pace with development. The County of Riverside has zoned fault systems and required similar special studies prior to development. These are referred to as County Fault Zones on Figure S-2 and in the Technical Background Report. Within A-P and County Fault Zones, proposed tracts of four or more dwelling units must investigate the potential for and setback from ground rupture hazards. As there are many active faults in Riverside County, with new fault strands being continually discovered, all proposed structures designed for human occupancy should be required to investigate the potential for and setback from ground rupture. Also of concern are structures, not for human occupancy, that can cause harm if damaged by an earthquake, such as utility, communications, and transportation lifelines. The County regulates most development projects within earthquake fault zones (Figure S-2). Projects include all land divisions and most structures for human occupancy. Before a project can be permitted within an A-P Earthquake Fault Zone, County Fault Zone, or within 150 feet of any other potentially active or active fault mapped in published United States Geological Survey (USGS) or California Division of Mining and Geology (CDMG) reports, a geologic investigation must demonstrate that proposed buildings will not be constructed across active faults.</SPAN></SPAN></P><P STYLE="font-size:16ptmargin:7 0 7 0;"><SPAN><SPAN>Updated 2/2016 with Thermal and Indio California Geologic Survey Quads</SPAN></SPAN></P><P><SPAN><SPAN /></SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Fault Zones
Geoscientific information
008
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>None.</SPAN></P></DIV></DIV></DIV>
Esri ArcGIS 12.9.0.32739
002
-117.753219
-115.474279
34.035913
33.417474
1
USGS, California Division of Mining and Geology
File Geodatabase Feature Class
dataset
EPSG
6.18.3(9.3.1.2)
Simple
FALSE
0
TRUE
FALSE
0
Fault_Zones
Feature Class
0
OBJECTID
OBJECTID
OID
4
0
0
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
FAULTZONE
FAULTZONE
String
50
0
0
SOURCE
SOURCE
String
50
0
0
AUTHORITY
AUTHORITY
String
25
0
0
SHAPE
SHAPE
Geometry
0
0
0
Feature geometry.
ESRI
Coordinates defining the features.
SHAPE_Length
SHAPE_Length
Double
8
0
0
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.
SHAPE_Area
SHAPE_Area
Double
8
0
0
Area of feature in internal units squared.
Esri
Positive real numbers that are automatically generated.
20220608