
Streamside Protection and Enhancement
The Township of Langley is home to over 1,700 km of watercourses, including 1,200 km of fish-bearing streams that support seven salmonid species and two endangered fish species. The remaining 500 km serve as drainage channels.
In developed areas, Integrated Stormwater Management Plans help maintain stream health.
Streamside protection principles
Under Schedule 3 of the Township’s Official Community Plan Streamside Protection and Enhancement Development Permit Areas (SPEAs) apply to watercourses and wetlands outside the Agricultural Land Reserve (ALR).
Watercourses are also regulated under the BC Water Sustainability Act (WSA).
Watercourse classification & setbacks
Watercourses are classified based on fish habitat value. You can view classifications:
- On GeoSource Mapping System (select the Environment layer)
- Using the Watercourse Classification Map
- Note: Mapping is not comprehensive. Property owners must identify all watercourses within 30m of proposed activity, including on adjacent lands. Confirmation by a Qualified Environmental Professional (QEP) or BC Land Surveyor may be required.
Setbacks
*Measured from top of bank or edge of floodplain
**Subject to Section 4.15 of Schedule 3
| Classification | Colour | Setback Column A* | Setback Column B (Flex)** |
|---|---|---|---|
| A – Natural watercourse | Red / Orange / Magenta | 30 m | 25 m |
| A – Roadside watercourse | Red / Orange / Magenta | 7.5 m | 5 m |
| B – Natural watercourse | Yellow | 20 m | 15 m |
| B – Constructed watercourse, channel width > 0.5 m | Yellow | 15 m | 10 m |
| B – Constructed watercourse, channel width < 0.5 m | Yellow | 10 m | 7.5 m |
| B – Roadside watercourse | Yellow | 6 m | 3.5 m |
| C | Green | 0 m | 0 m |
| C (Non-Regulated) | Turquoise | 0 m | 0 m |
| U – (Unclassified) | Blue | TBD** | TBD** |
| Fraser River and Bedford Channel | n/a | 30 m | 30 m |
| Streamside protection in the ALR |
Riparian areas protection regulation (RAPR)The provincial RAPR applies to residential development within the Agricultural Land Reserve (ALR). If your proposed structure or related use (e.g. access, landscaping, septic, well) is located within 30 metres of a watercourse high water mark (the riparian assessment area), a RAPR assessment by a Qualified Environmental Professional (QEP) must be submitted to the provincial government.
Learn more at the Province of BC’s RAPR page. |
| Legislation |
Senior government oversightWatercourses and riparian areas are regulated by municipal, provincial, and federal governments. The Township cannot authorize work within provincial or federal jurisdiction. It is the proponent’s responsibility, through a Qualified Environmental Professional (QEP), to ensure compliance. Federal – Fisheries actThe Fisheries Act regulates fish and fish habitat in Canada.
Provincial – Water sustainability act (WSA)The Water Sustainability Act (WSA) regulates changes “in and about a stream” throughout BC.
Provincial – Riparian areas protection regulation (RAPR)Riparian Areas Protection Regulation (RAPR)
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| Development approval process |
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Schedule 3 of the Official Community Plan outlines policies, requirements, and procedures for streamside protection. These apply to development applications such as:
If a project hasn’t gone through these processes, streamside requirements are applied at the building permit or soil permit stage. SPEA requirementsNew development must comply with SPEA objectives and guidelines unless specifically exempted by bylaw. SPEAs are intended to remain in a natural, undisturbed state and may require:
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| SPEA Modification - Flex Provision |
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In special cases—such as unique site configurations—developers may request a modification to the SPEA width, in accordance with Section 4.15 of Schedule 3 of the Official Community Plan. Key requirements:
A Qualified Environmental Professional (QEP) must submit a report supporting the flex proposal. This report may need to address:
All flex proposals must be acceptable to the Township and comply with applicable legislation. |
| SPEA Modification - Streamside Protection and Enhancement Development Permit |
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In exceptional circumstances, a proponent may apply to modify the Streamside Protection and Enhancement Development Permit Area if unique site conditions exist. This process is not intended for cases where development potential is reduced by SPEA requirements. Applicants must justify why the SPEA Flex option cannot be used. Application requirements
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| Watercourse classification or location review |
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If a proponent believes a watercourse’s location or classification is incorrect, the Township will review supporting documentation submitted by a Qualified Environmental Professional (QEP) or BC Land Surveyor. To request a change, submit to submit to streamsideinfo@tol.ca:
The Township will assess the submission and may approve a reclassification or relocation if the documentation is found acceptable. |
| Where streamside protection requirements do not apply |
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The Township’s Streamside Protection and Enhancement requirements do not apply to:
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| Key links and documents |
Questions? Email streamsideinfo@tol.ca.