GIS Data Catalog

Control Pond and Vault

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Summary

Ponds and vaults provide flow control which mitigates stormwater runoff and also can treat stormwater to improve water quality.

Pond/Vault components can be excavated from the earth, created by berms, or have concrete walls.

Ponds are typically open to the surface with one or more earthen sides and an earthen bottom.

Vaults are typically rectangular and constructed of concrete.

Description

Pond/Vault Component Types---Detention (Flow Through): Detention ponds and vaults temporarily store stormwater and typically releases flow over a few hours or a few days.

Flow through means that the pond or vault that flow enters the pond through an inlet and exits through an outlet.

---Detention (Backup): Detention ponds and vaults temporarily store stormwater and typically releases flow over a few hours or a few days.

Backup means that the pond or vault that flow enters the pond through an inlet and exits through an outlet.

---Stormwater treatment wetland: Stormwater treatment Wetlands use gravity settling, physical, chemical and biological processes of plant uptake and bacterial degradation to remove pollutants.

They are similar to wetponds in size, but have a deep cell a shallow cell that promotes plant growth.

---Wet (Water Quality): Drainage facilities for water quality treatment that contain a permanent pool of water.

They are designed to optimize water quality by providing long retention times (on the order of a week or more) to settle out particles of fine sediment to which pollutants such as heavy metals adsorb, and to allow biologic activity to occur that metabolizes nutrients and organic pollutants.

For wetvaults, the permanent pool of water is covered by a lid which blocks sunlight from entering the facility, limiting light-dependent biologic activity.

Depth is >3’.

---Combined (Wet and Detention): Have the appearance of a detention facility but contain a permanent pool of water as well.---Oil Water Separator: A vault, usually underground designed to provide a quiescent environment to separate oil from water.

Floatables (e.g., styrofoam) are also removed.

---Infiltration: A Pond or vault that is designed to use the hydrologic process of water soaking into the ground (commonly referred to as percolation) to dispose of surface and storm water runoff

Layer information

Layer Name	sw_ctrl_pondvault_area
Subject Category	Utilities
Title	Control Pond and Vault
Feature Count	2062
Feature Type	Polygon
Next Update	Continually
Spatial reference	EPSG:2926
Control ID	2515
Place Keywords	Pacific NW, King County, WA, Washington State
Theme Keywords	Utility, MS4, Stormwater, Drainage, Municipal Separate Stormwater Sewer System, NPDES Municipal Stormwater Permit, Utilitiescommunication
Supplemental Information	None

Table Preview

Attribute information

OBJECTID From ESRI	Description Internal feature number. Domain Sequential unique whole numbers that are automatically generated.
Shape From ESRI	Description Feature geometry. Domain Coordinates defining the features.
DBAssetID From SOP Chapter 2: Database Design	Description DBAssetID is the unique identifier that is used to tie to Cityworks, MIS, or some other database. The DBAssetID is unique for each feature class and is generated by a script that runs nightly. Users should not modify the DBAssetID. Domain Not Found
ComponentType From SOP Chapter 2: Database Design	Description Within the Puget Sound Stormwater Infrastructure Framework, Component Type is the finest classification for a structure. Domain Combined, Detention_Backup, Detention_FlowThrough, Infiltration, Oil Water Separator, Sand Filter, Settling, Stormwater Treatment Wetland, Wet
Cover From SOP Chapter 2: Database Design	Description Cover tracks whether or not the feature has a top that covers the feature from the sky. Domain Covered, Not Covered, Partially Covered
NumberOfCells From SOP Chapter 2: Database Design	Description NumberOfCells tracks the number of cells in a multi-celled pond. Domain Not Found
SandFilter From SOP Chapter 2: Database Design	Description SandFilter tracks whether or not the pond or vault has a sand filter. Domain No, Yes
Intent From SOP Chapter 2: Database Design	Description Intent tracks whether the infrastructure was designed primarily to convey stormwater or a natural water body. Domain Convey stormwater, Convey Stormwater
OwnerEntity From SOP Chapter 2: Database Design	Description OwnerEntity tracks the owner of the particular feature. Domain Airport, FMD, Parks, Private, Roads, SWD, WLRD
Jurisdiction From SOP Chapter 2: Database Design	Description Jurisdiction tracks the jurisdiction that governs the land that the asset resides in. Domain Kenmore, King County, Seattle, Shoreline, Tukwila
OutletStructure No Source Noted	Description Not Found Domain Not Found
XYSource From SOP Chapter 2: Database Design	Description XYSource tracks the method in which the geographic location of the asset was recorded. Domain CAD, Picked from aerial, Plans, Sketch
KingCountyMS4 No Source Noted	Description Not Found Domain Not Found
FieldVisitDate From SOP Chapter 2: Database Design	Description FieldVisitDate tracks the date that staff last visited the feature in the field. Domain Not Found
LastEditDate From SOP Chapter 2: Database Design	Description LastEditDate tracks the date that staff last edited the feature. Domain Not Found
DataStage From SOP Chapter 2: Database Design	Description DataStage tracks the status of the data as it moves through the QAQC process. Domain Acquire, Approved, Process
CurrentStatus From SOP Chapter 2: Database Design	Description CurrentStatus tracks the status of the data as it moves through the lifecycle of an asset. Domain Active
DataSource From SOP Chapter 2: Database Design	Description DataSource tracks the group, program, or process that added the data. Domain KCIA CAD, Roads NPDES Mapping, SWSS Mapping
GlobalID From ESRI	Description GlobalID is a 36 character string that ArcGIS uses to uniquely identify features or table rows within a geodatabase and across geodatabases. Domain Not Found
FacilityID From SOP Chapter 2: Database Design	Description FacilityID tracks the FacilityID number that the feature is a part of. Domain Not Found
PlanLink From SOP Chapter 2: Database Design	Description When digital plans are available, PlanLink provides a hyperlink to plan files. Domain Not Found
SpillControl From SOP Chapter 2: Database Design	Description SpillControl tracks whether or not the structure has a spill control device, like a down-turned elbow or T-section without a restrictor plate. Spill control devices are sometimes referred to “oil-water separators” among King County staff, but “oil-water separators” function differently and are only found in vaults. Domain No
ControlStructure From SOP Chapter 2: Database Design	Description ControlStructure records whether or not the feature functions as a flow control structure/flow restrictor. Domain No, Yes
AssetID From SOP Chapter 2: Database Design	Description AssetID is the unique identifier that is used to tie to Cityworks, MIS, or some other database. The AssetID is unique for each feature class and is generated by a script that runs nightly. Users should not modify the AssetID. Domain Not Found
PAA From SOP Chapter 2: Database Design	Description PAA tracks which Potential Annexation Area an asset intersects, if applicable. Domain Not Found
CCTVInspectionDate From King County	Description Most Recent CCTV Inspection tracks the date of the most recent CCTV inspection. Domain Not Found
Liner From King County	Description Material type of low permeability liner or treatment liner that is located underneath the pond. Domain Not Found
Shape.STArea() From ESRI	Description Shape is used by ArcGIS to store the geometry of a feature. Domain Not Found
Shape.STLength() From ESRI	Description Shape is used by ArcGIS to store the geometry of a feature. Domain Not Found

Contact information

Maintained by	DNRP - Water and Land Resources
Primary	Harkeerat Kang Harkeerat.Kang@kingcounty.gov

Terms of Use

License	Terms of use and copyright

Use this Data

Links How to use in ArcGIS Pro
Sharing Status	Public