Open Data Catalogue



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Drainage Points

Features: DrainagePoints
Purpose: Features along the storm drainage system that are represented as a point.

Point features representing various structure locations along drainage network that allow access to chambers and pipes for maintenance and inspection. The various types are:

- Manholes, catch basins, endcaps, sediment control, oil/grit interceptors, outlets and flow control structures;

- Pump stations which are flow structures that aid in maintaining flow and transport of overland water through dykes.


The SYM_NUMBER links to the MH_NUMBER in the Drainage Lines file.

MHDOWN is the Manhole directly downstream from the current one

Manholes are numbered so that the first two or three digits of the SYM_NUMBER are unique to individual watersheds.

'INVERT', 'INVERTDOWN', 'RIM', and 'TOPO' elevation values are based on the Canadian Geodetic Vertical Datum of 1928 (CGVD28).

Credits: Updated by the City of Chilliwack.
Limitations: The data was compiled from various sources by the City of Chilliwack. It is the responsibility of the user to ensure the accuracy and sufficiency of this data.
Maintenance Frequency: This data is uploaded to the Open Data web page weekly and is as current as the City of Chilliwack database. Priorities and resources will determine how fast a change in reality is reflected in the database.
Upload Date: 05 June, 2020
Bounding Box: Northwest corner (565911.9508, 5452363.395)
Southeast corner (588530.3227, 5434301.2419)
Coordinate System: KMZ files, LL84
All other file formats, NAD_1983_UTM_Zone_10N
Shape Type: Point
XLSX Download
CSV Download
DWG Download
SHP Download
GDB Download
KML Download
JSON Download

The City takes no responsibility for the limitations of Google Earth, ERDAS ER Viewer or any other third party application.

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