Channel Overview

Asset Type: channel
Display Name: Channel
Display Plural: Channels
Geometry Type: LineString

Quick Navigation

• SubTypes
• Asset Attributes
• Inspection Attributes
• Service Requests

Channel SubTypes

SubType Key	Display Name	Geometry	Documentation	Also Known As
Pipe	Pipe	LineString	Underground enclosed drainage pipe, typically circular, running beneath roads, footpaths or fields; made of plastic, concrete, clay or other materials.	—
Culvert	Culvert	LineString	Large underground pipe or box structure under roads, embankments or railways; often big enough to walk through for inspection and maintenance.	—
Filter	Filter Drain	LineString	Filter drain or French drain with permeable stone or gravel fill; used for land drainage, water treatment or soakaway systems.	—
CounterfortDrain	Counterfort Drain	LineString	Herringbone drain on slopes or embankments; perpendicular drainage cuts across hillsides with stone or rubble fill.	—
WaterCourse	Water Course	LineString	Natural stream, brook, or artificial open watercourse with regular or continuous water flow.	—
Slot	Slot Drain	LineString	Narrow slot drain with continuous linear opening at road surface; thin gap for water collection.	—
Ditch	Ditch	LineString	Open channel or trench alongside roads or through fields; usually earth-sided, V-shaped or trapezoidal for surface water.	—
Grip	Grip	LineString	Cross-drain or gripe cutting across verges; small channel diverting water from carriageway into roadside ditches.	—
KerbDrain	Kerb Drain	LineString	Kerb-side drainage channel integrated with road edge; runs along kerb line collecting gutter flow. Also known as Beanie Blocks.	—
AcoDrain	Aco drain	LineString	Branded linear drain with metal or plastic grating; manufactured channel system common in car parks, driveways and hard surfaces.	—
DishChannel	Dish channel	LineString	Shallow dish-shaped depression in road or pavement surface; wide shallow channel often in laybys or road edges.	—
Other	Other	LineString	Any drainage channel not fitting standard types; unusual or unique drainage features requiring separate classification.	—
Easement	Easement	LineString	Drainage right-of-way or legal access across land; marks permission for drainage rather than physical drainage feature.	—
Buddlehole	Buddlehole	LineString	Similar to a grip, a hole or channel cut through an embankment or hedge to allow drainage from the roadway into an adjacent area or ditch.	—
SlotDrain	Slot Drain	LineString	Manufactured slot drainage system with narrow continuous opening; precast concrete or polymer linear drain product.	—
Swale	Concrete Swale	LineString	Shallow grass-lined channel, grassed depression or bio-retention area; vegetated SuDS feature for slow conveyance and infiltration.	—

Channel Asset Attributes

Attribute Name	Display Name	Type	Enum Values
discharge_location	Discharge Location	Enumerated	N/A
type	Design Type	Enumerated	N/A
material	Material	Enumerated	N/A
diameter	Diameter/height	NumberWithUnit	N/A
direction_known	Direction	Boolean	N/A
shape	Shape	Enumerated	N/A
usage	Usage	Enumerated	N/A
location_info	Location Info	Enumerated	N/A
width	Width	NumberWithUnit	N/A
channel_length	Channel Length	NumberWithUnit	N/A
gradient	Gradient	Number	N/A
data_source	Data Source	FreeText	N/A
remote_access_reason	Remote access	Enumerated	N/A
chandata1	Verge Status	Enumerated	N/A

📋 Discharge Location Values

Name	Display
LowRisk	Low Risk
BathingWater	Bathing water
Ditches	Ditches
Rivers	Rivers
Sea	Sea

📋 Material Values

Name	Display
Concrete	Concrete
Brick	Brick
Clay	Clay
Plastic	Plastic
Stone	Stone
Other	Other

📋 Shape Values

Name	Display
Circular	Circular
Square	Square
Rectangle	Rectangle
Oval	Oval
Other	Other
``	Unknown

📋 Usage Values

Name	Display
Carrier	Carrier
Gully	Gully
Foul	Foul
LandDrainage	Land Drainage
Surface	Surface
Combined	Combined
Other	Other

📋 Location Info Values

Name	Display
Field	Field
UnderRoad	Under Road
Mixed	Mixed
SoftGround	Soft Ground
InFootway	In Footway
OnRoad	On Road

📋 Remote access Values

Name	Display
None	Not required
Ped	Pedestrian area
NoAcc	No access for vehicle
Subway	Subway

📋 Verge Status Values

Name	Display
SSSI	SSSI
Protected	Protected
N/A	N/A

Channel Inspection Attributes

Attribute Name	Display Name	Type	Enum Values
silt_level_n	Silt Level	NumberInRangeWithUnit	N/A
silt_level	Silt Level	Enumerated	N/A
water_level	Water Level	Enumerated	N/A
pollution	Evidence of pollution	Enumerated	N/A
defect	Defect	TransitionalNotSetMultiValuedEnumerated	N/A
channel_cleaned	Cleaned	BooleanWithSupplementaryQuestions	N/A
length_cleaned	Length cleaned	NumberWithUnit	N/A
time_spent_cleaning	Time spent cleaning	NumberWithUnit	N/A
silt_level_on_leaving	Silt level on leaving	Enumerated	N/A
lining	Lining	Enumerated	N/A
operational_on_leaving	Operational on leaving	Enumerated	N/A
cctv_surveyed	CCTV surveyed	Boolean	N/A
condition	General condition	Enumerated	N/A
jetting_time	Jetting time	NumberInRangeWithUnit	N/A
cctv_project_name	CCTV Project Name	FreeText	N/A
start_asset_ref	Start node ref	FreeText	N/A
end_asset_ref	End node ref	FreeText	N/A
cctv_surveyed_reversed	Reversed (started from downstream node)	Boolean	N/A
jetting_completed	Jetting completed	BooleanWithSupplementaryQuestions	N/A
jt_water_req	Water required	Boolean	N/A
jt_travel_req	Travel required	Boolean	N/A
jt_comment	Reason for jetting	FreeText	N/A
location_status_comment	Location Status Comment	ChannelLocationStatusComment	N/A
chan_observations	Channel observations	ChannelObservations	N/A
repair_completed	Repair completed	Boolean	N/A

📋 Silt Level Values

Name	Display
``	unknown
0%	0%
25%	25%
50%	50%
75%	75%
100%	100%

📋 Water Level Values

Name	Display
0%	0%
25%	25%
50%	50%
75%	75%
100%	100%

📋 Evidence of pollution Values

Name	Display
None	None
Foul water	Foul water
Petrol	Petrol
Oil	Oil
Chemical	Chemical

📋 Defect Values

Name	Display
Collapse	Collapse
Silt	Silt
Roots	Roots
Cracked	Cracked
Other	Other

📋 Silt level on leaving Values

Name	Display
``	unknown
0%	0%
25%	25%
50%	50%
75%	75%
100%	100%

📋 Lining Values

Name	Display
All	All
Part	Part
None	None
Unknown	Unknown

📋 Operational on leaving Values

Name	Display
``	Unknown
Yes	Yes - channel flowing
No	No
SlowRunner	Slow runner

📋 General condition Values

Name	Display
0	unknown
1	1
2	2
3	3
4	4
5	5

Channel Service Requests

Operation	Display Name
inspect	Inspect
rectify_unknown_fault	Rectify unknown fault
investigate	Requires investigation
clean	Clean
jetting	Jetting
root_cutting	Root cutting
cctv_survey	CCTV survey
main_line_clean	Main line clean
unblock_ditch	Unblock ditch
hedge_cutting	Hedge cutting
desilting	Desilting
repair	Repair
repair_pipe	Replace/repair pipe

Contacts (optional)

• Internal business owner
• Technical lead(s)
• 3rd party contact details

Links

• Proposals

• Use cases

• Acceptance criteria

• Configuration Documentation

• Technical Documentation

• User Documentation

References (git and/or clickup / see also / external references)

• Github issues for: hub:/home/matheus/git/drains/doc-hub/asset-types/channel/README.md

Generated on 2026-01-29T11:53:35.664Z