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Attribute Description
NAME Name of the Individual drainage infrastructure.
DIAMETER_H The diameter of a round pipe or the height of an underground box.
DWGNO Drain Plan Drawing Number per LACFCD Nomenclature
EQNUM Asset No. assigned by the Department of Public Works’) in Maximo Database).
WIDTH Width of a underground box.
OUTFALL_FC Description of the source outlet infrastructure.
CROSS_SECT Shape of the source outlet infrastructure.
Subtypes:
Side Opening: A catch basin with a standard, vertical curb opening.
Grated: A catch basin with a grate-covered opening located in the plane of the gutter or pavement.
Combination: A catch basin with both side and grated openings.
Inlet: A flared-type catch basin typically made of corrugated steel pipe (CSP).
Cover: A lid for the access hole to a catch basin, typically made of cast iron.
Insert: A manufactured frame incorporating filter or fabric and placed in a curb opening to remove trash, and sediments from catch basins. It is also a form of Best Management Priactice.
Cover & Insert: A combined cover and insert device.
Attributes: Most of the feature classes in this storm drain geometric network share the same GIS table schema. Only the most critical attributes per operations of the Los Angeles County Flood Control District are listed below:
Attribute | Description |
ASBDATE | The date the design plans were approved "as-built" or accepted as "final records". |
CROSS_SECTION_SHAPE | The cross-sectional shape of the pipe or channel. Examples include round, square, trapezoidal, arch, etc. |
DIAMETER_HEIGHT | The diameter of a round pipe or the height of an underground box or open channel. |
DWGNO | Drain Plan Drawing Number per LACFCD Nomenclature |
EQNUM | Asset No. assigned by the Department of Public Works' (in Maximo Database). |
MAINTAINED_BY | Identifies, to the best of LAFCD's knowledge, the agency responsible for maintaining the structure. |
MOD_DATE | Date the GIS features were last modified. |
NAME | Name of the individual drainage infrastructure. |
OWNER | Agency that owns the drainage infrastructure in question. |
Q_DESIGN | The peak storm water runoff used for the design of the drainage infrastructure. |
SOFT_BOTTOM | For open channels, indicates whether the channel invert is in its natural state (not lined). |
SUBTYPE | Most feature classes in this drainage geometric nature contain multiple subtypes. |
UPDATED_BY | The person who last updated the GIS feature. |
WIDTH | Width of a channel in feet. |
This Storm Drain Dataset is a work in progress, and all users of this data are STRONGLY ENCOURAGED to obtain the most current copy, available for download at the LA County eGIS Hub site.
This data is derived from the County Cadastral Landbase and features are typically added to this dataset per recorded 'as-built' drawings. Accurate facility locations on the ground must be determined by qualified field personnel. If any errors are found, or if there are general questions, please contact the individuals listed in the Credits.
This product is for information purposes and should not be used for legal, engineering, or survey purposes. County assumes no liability for any errors or omissions.
Data Type: polyline data
A gravity main is digitized from paper or scanned imagery.
Subtypes:
Standard: A typical gravity main.
Inverted Siphon: A gravity main that siphons stormwater to flow under an obstruction.
Other: All other types of gravity mains.
Attributes: Most of the feature classes in this storm drain geometric network share the same GIS table schema. Only the most critical attributes per operations of the Los Angeles County Flood Control District are listed below:
Attribute | Description |
ASBDATE | The date the design plans were approved "as-built" or accepted as "final records". |
CROSS_SECTION_SHAPE | The cross-sectional shape of the pipe or channel. Examples include round, square, trapezoidal, arch, etc. |
DIAMETER_HEIGHT | The diameter of a round pipe or the height of an underground box or open channel. |
DWGNO | Drain Plan Drawing Number per LACFCD Nomenclature |
EQNUM | Asset No. assigned by the Department of Public Works (in Maximo Database). |
MAINTAINED_BY | Identifies, to the best of LAFCD's knowledge, the agency responsible for maintaining the structure. |
MOD_DATE | Date the GIS features were last modified. |
NAME | Name of the individual drainage infrastructure. |
OWNER | Agency that owns the drainage infrastructure in question. |
Q_DESIGN | The peak storm water runoff used for the design of the drainage infrastructure. |
SOFT_BOTTOM | For open channels, indicates whether the channel invert is in its natural state (not lined). |
SUBTYPE | Most feature classes in this drainage geometric nature contain multiple subtypes. |
UPDATED_BY | The person who last updated the GIS feature. |
WIDTH | Width of a channel in feet. |
This Storm Drain Dataset is a work in progress, and all users of this data are STRONGLY ENCOURAGED to obtain the most current copy, available for download at the LA County eGIS Hub site.
This data is derived from the County Cadastral Landbase and features are typically added to this dataset per recorded 'as-built' drawings. Accurate facility locations on the ground must be determined by qualified field personnel. If any errors are found, or if there are general questions, please contact the individuals listed in the Credits.
This product is for information purposes and should not be used for legal, engineering, or survey purposes. County assumes no liability for any errors or omissions.
Data Type: polyline data
A lateral line digitized from paper or scanned imagery.
Attributes: Most of the feature classes in this storm drain geometric network share the same GIS table schema. Only the most critical attributes per operations of the Los Angeles County Flood Control District are listed below:
Attribute | Description |
ASBDATE | The date the design plans were approved "as-built" or accepted as "final records". |
CROSS_SECTION_SHAPE | The cross-sectional shape of the pipe or channel. Examples include round, square, trapezoidal, arch, etc. |
DIAMETER_HEIGHT | The diameter of a round pipe or the height of an underground box or open channel. |
DWGNO | Drain Plan Drawing Number per LACFCD Nomenclature |
EQNUM | Asset No. assigned by the Department of Public Works (in Maximo Database). |
MAINTAINED_BY | Identifies, to the best of LAFCD's knowledge, the agency responsible for maintaining the structure. |
MOD_DATE | Date the GIS features were last modified. |
NAME | Name of the individual drainage infrastructure. |
OWNER | Agency that owns the drainage infrastructure in question. |
Q_DESIGN | The peak storm water runoff used for the design of the drainage infrastructure. |
SOFT_BOTTOM | For open channels, indicates whether the channel invert is in its natural state (not lined). |
SUBTYPE | Most feature classes in this drainage geometric nature contain multiple subtypes. |
UPDATED_BY | The person who last updated the GIS feature. |
WIDTH | Width of a channel in feet. |
This Storm Drain Dataset is a work in progress, and all users of this data are STRONGLY ENCOURAGED to obtain the most current copy, available for download at the LA County eGIS Hub site.
This data is derived from the County Cadastral Landbase and features are typically added to this dataset per recorded 'as-built' drawings. Accurate facility locations on the ground must be determined by qualified field personnel. If any errors are found, or if there are general questions, please contact the individuals listed in the Credits.
This product is for information purposes and should not be used for legal, engineering, or survey purposes. County assumes no liability for any errors or omissions.
Data Type: Polyline data
Subtypes:
Stream: A natural drainage course devoid of human interference.
Watercourse: A channelized natural drainage.
Attributes: Most of the feature classes in this storm drain geometric network share the same GIS table schema. Only the most critical attributes per operations of the Los Angeles County Flood Control District are listed below:
Attribute | Description |
ASBDATE | The date the design plans were approved "as-built" or accepted as "final records". |
CROSS_SECTION_SHAPE | The cross-sectional shape of the pipe or channel. Examples include round, square, trapezoidal, arch, etc. |
DIAMETER_HEIGHT | The diameter of a round pipe or the height of an underground box or open channel. |
DWGNO | Drain Plan Drawing Number per LACFCD Nomenclature |
EQNUM | Asset No. assigned by the Department of Public Works (in Maximo Database). |
MAINTAINED_BY | Identifies, to the best of LAFCD's knowledge, the agency responsible for maintaining the structure. |
MOD_DATE | Date the GIS features were last modified. |
NAME | Name of the individual drainage infrastructure. |
OWNER | Agency that owns the drainage infrastructure in question. |
Q_DESIGN | The peak storm water runoff used for the design of the drainage infrastructure. |
SOFT_BOTTOM | For open channels, indicates whether the channel invert is in its natural state (not lined). |
SUBTYPE | Most feature classes in this drainage geometric nature contain multiple subtypes. |
UPDATED_BY | The person who last updated the GIS feature. |
WIDTH | Width of a channel in feet. |
This Storm Drain Dataset is a work in progress, and all users of this data are STRONGLY ENCOURAGED to obtain the most current copy, available for download at the LA County eGIS Hub site.
This data is derived from the County Cadastral Landbase and features are typically added to this dataset per recorded 'as-built' drawings. Accurate facility locations on the ground must be determined by qualified field personnel. If any errors are found, or if there are general questions, please contact the individuals listed in the Credits.
This product is for information purposes and should not be used for legal, engineering, or survey purposes. County assumes no liability for any errors or omissions.
Data Type: polyline data
An open channel is digitized from paper or scanned imagery.
Subtypes:
Improved: An open drainage course confined with lined or unlined embankments.
Unimproved: A natural drainage course graded to channelize storm water.
Swale: A graded depression with relatively low slope to channelize storm water.
Ditch: A trench provided to channelize storm water.
Attributes: Most of the feature classes in this storm drain geometric network share the same GIS table schema. Only the most critical attributes per operations of the Los Angeles County Flood Control District are listed below:
Attribute | Description |
ASBDATE | The date the design plans were approved "as-built" or accepted as "final records". |
CROSS_SECTION_SHAPE | The cross-sectional shape of the pipe or channel. Examples include round, square, trapezoidal, arch, etc. |
DIAMETER_HEIGHT | The diameter of a round pipe or the height of an underground box or open channel. |
DWGNO | Drain Plan Drawing Number per LACFCD Nomenclature |
EQNUM | Asset No. assigned by the Department of Public Works (in Maximo Database). |
MAINTAINED_BY | Identifies, to the best of LAFCD's knowledge, the agency responsible for maintaining the structure. |
MOD_DATE | Date the GIS features were last modified. |
NAME | Name of the individual drainage infrastructure. |
OWNER | Agency that owns the drainage infrastructure in question. |
Q_DESIGN | The peak storm water runoff used for the design of the drainage infrastructure. |
SOFT_BOTTOM | For open channels, indicates whether the channel invert is in its natural state (not lined). |
SUBTYPE | Most feature classes in this drainage geometric nature contain multiple subtypes. |
UPDATED_BY | The person who last updated the GIS feature. |
WIDTH | Width of a channel in feet. |
This Storm Drain Dataset is a work in progress, and all users of this data are STRONGLY ENCOURAGED to obtain the most current copy, available for download at the LA County eGIS Hub site.
This data is derived from the County Cadastral Landbase and features are typically added to this dataset per recorded 'as-built' drawings. Accurate facility locations on the ground must be determined by qualified field personnel. If any errors are found, or if there are general questions, please contact the individuals listed in the Credits.
This product is for information purposes and should not be used for legal, engineering, or survey purposes. County assumes no liability for any errors or omissions.
Data type: polyline data
A permitted connection is digitized from paper or scanned imagery.
Attributes: Most of the feature classes in this storm drain geometric network share the same GIS table schema. Only the most critical attributes per operations of the Los Angeles County Flood Control District are listed below:
Attribute | Description |
ASBDATE | The date the design plans were approved "as-built" or accepted as "final records". |
CROSS_SECTION_SHAPE | The cross-sectional shape of the pipe or channel. Examples include round, square, trapezoidal, arch, etc. |
DIAMETER_HEIGHT | The diameter of a round pipe or the height of an underground box or open channel. |
DWGNO | Drain Plan Drawing Number per LACFCD Nomenclature |
EQNUM | Asset No. assigned by the Department of Public Works (in Maximo Database). |
MAINTAINED_BY | Identifies, to the best of LAFCD's knowledge, the agency responsible for maintaining the structure. |
MOD_DATE | Date the GIS features were last modified. |
NAME | Name of the individual drainage infrastructure. |
OWNER | Agency that owns the drainage infrastructure in question. |
Q_DESIGN | The peak storm water runoff used for the design of the drainage infrastructure. |
SOFT_BOTTOM | For open channels, indicates whether the channel invert is in its natural state (not lined). |
SUBTYPE | Most feature classes in this drainage geometric nature contain multiple subtypes. |
UPDATED_BY | The person who last updated the GIS feature. |
WIDTH | Width of a channel in feet. |
This Storm Drain Dataset is a work in progress, and all users of this data are STRONGLY ENCOURAGED to obtain the most current copy, available for download at the LA County eGIS Hub site.
This data is derived from the County Cadastral Landbase and features are typically added to this dataset per recorded 'as-built' drawings. Accurate facility locations on the ground must be determined by qualified field personnel. If any errors are found, or if there are general questions, please contact the individuals listed in the Credits.
This product is for information purposes and should not be used for legal, engineering, or survey purposes. County assumes no liability for any errors or omissions.
Data Type: polyline data
A pseudo line is created to connect a drain to an open channel.
Type: Line feature class.
Attributes: Most of the feature classes in this storm drain geometric network share the same GIS table schema. Only the most critical attributes per operations of the Los Angeles County Flood Control District are listed below:
Attribute | Description |
ASBDATE | The date the design plans were approved "as-built" or accepted as "final records". |
CROSS_SECTION_SHAPE | The cross-sectional shape of the pipe or channel. Examples include round, square, trapezoidal, arch, etc. |
DIAMETER_HEIGHT | The diameter of a round pipe or the height of an underground box or open channel. |
DWGNO | Drain Plan Drawing Number per LACFCD Nomenclature |
EQNUM | Asset No. assigned by the Department of Public Works (in Maximo Database). |
MAINTAINED_BY | Identifies, to the best of LAFCD's knowledge, the agency responsible for maintaining the structure. |
MOD_DATE | Date the GIS features were last modified. |
NAME | Name of the individual drainage infrastructure. |
OWNER | Agency that owns the drainage infrastructure in question. |
Q_DESIGN | The peak storm water runoff used for the design of the drainage infrastructure. |
SOFT_BOTTOM | For open channels, indicates whether the channel invert is in its natural state (not lined). |
SUBTYPE | Most feature classes in this drainage geometric nature contain multiple subtypes. |
UPDATED_BY | The person who last updated the GIS feature. |
WIDTH | Width of a channel in feet. |
This Storm Drain Dataset is a work in progress, and all users of this data are STRONGLY ENCOURAGED to obtain the most current copy, available for download at the LA County eGIS Hub site.
This data is derived from the County Cadastral Landbase and features are typically added to this dataset per recorded 'as-built' drawings. Accurate facility locations on the ground must be determined by qualified field personnel. If any errors are found, or if there are general questions, please contact the individuals listed in the Credits.
This product is for information purposes and should not be used for legal, engineering, or survey purposes. County assumes no liability for any errors or omissions.
Represent's the outer land boundary of Los Angeles County. Land boundaries are derived from the Los Angeles County Cadastral landbase. Ocean boundaries are drived from NOAA coastline data, modified to conform with LAR-IAC aerial imagery where needed. The most current copy of this data is available at the Los Angeles County GIS Data Portal.