GIS Data Catalog
Catchment boundaries derived from terrian data
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Summary
Drainage area delineations are drainage areas at the smallest scale derived from terrain data.
Description
These are drainage area delineations that generally define drainage areas at scale similar to neighborhoods.
However, the size of drainage areas is highly variable for this layer.
The variability in size of defined areas is usually driven by stormwater needs for a given municipality, capital improvement project, etc. They can be defined based on complex stormwater conveyances as well.
This is the finest scale of drainage areas that KC currently has for county wide.
The County has been undergoing updated mapping of drainage basins taking into account conveyances that may not be fully topographically driven.
For example underground stormwater water pipes may direct flows counter to surface topography.
This is an ongoing effort conducted by King County and various collaborating partners.
Layer information
| Layer Name | topo_catchment_area |
| Subject Category | Hydrography |
| Title | Catchment boundaries derived from terrian data |
| Feature Count | 1543 |
| Feature Type | Polygon |
| Spatial reference | EPSG:2926 |
| Control ID | 339 |
| Place Keywords | None |
| Theme Keywords | Hydro, Hydrology, None, TOPO_CATCHMENT_AREA (339), _AREA |
| Supplemental Information | None |
Table Preview
Attribute information
|
FEATURE_ID
From OBJECTID |
Description
Unique Identification Number Domain1 to 1512 by 1 |
|
Shape
From ESRI |
Description
Feature Geometry DomainCoordinates defining the features |
|
SUB_BASIN
From DRNBASIN |
Description
Subornate Basin of Basin DomainUnique ID for Sub-Basins |
|
CATCHMENT
From DRNBASIN |
Description
Smallest Basin Division in Watershed Hierarchy DomainUnique Catchment Name |
|
OBJECTID
From ESRI |
Description
Internal feature number. DomainSequential unique whole numbers that are automatically generated. |
|
SHAPE
From ESRI |
Description
Feature geometry. DomainCoordinates defining the features. |
|
WRIA_NO
No Source Noted |
Description
Not Found DomainNot Found |
|
Shape.STArea()
From SQL Server |
Description
Returns the area of a geometry instance in square units, based on the spatial reference identifier (SRID) of the geometry. DomainDouble |
|
Shape.STLength()
From SQL Server |
Description
Returns the total length of the elements in a geometry instance. DomainDouble |
|
WRIA_NAME
No Source Noted |
Description
Not Found DomainNot Found |
|
WTRSHD_NAME
From ESRI |
Description
Feature geometry. DomainCoordinates defining the features. |
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 |
Summary
Drainage area delineations are drainage areas at the smallest scale derived from terrain data.
Description
These are drainage area delineations that generally define drainage areas at scale similar to neighborhoods.
However, the size of drainage areas is highly variable for this layer.
The variability in size of defined areas is usually driven by stormwater needs for a given municipality, capital improvement project, etc. They can be defined based on complex stormwater conveyances as well.
This is the finest scale of drainage areas that KC currently has for county wide.
The County has been undergoing updated mapping of drainage basins taking into account conveyances that may not be fully topographically driven.
For example underground stormwater water pipes may direct flows counter to surface topography.
This is an ongoing effort conducted by King County and various collaborating partners.
Contact information
| Maintained by | DNRP - Water and Land Resources |
| Primary |
Harkeerat Kang
Harkeerat.Kang@kingcounty.gov |
Terms of use and copyright
| License | Terms of use and copyright |