
Surveyor flags, also known as streamers, are attached to trees, fences, or stakes to mark features on the land that need to be measured and recorded before land can be developed. Surveyor flags come in a variety of colours, each representing a different technology or feature. For example, red flags indicate electric power lines, cables, and conduit, while white flags represent areas of proposed excavation.
| Characteristics | Values |
|---|---|
| Purpose | To identify, locate and mark features on the land that need to be measured and recorded before land can be developed |
| Attachment | Flags are attached to thin metal rods or stakes placed by the survey |
| Colours | Red, orange, pink, white, blue, purple, yellow and green |
| Symbolism | Colours and symbols on the flags explain what the surveyor found in that spot |
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What You'll Learn
- Survey flags are attached to trees, fences, or stakes
- Flags are brightly coloured to indicate different things
- Flags with no markings could mean it's part of a path or a proposed work site
- Red flags indicate electric power lines, cables, conduit and lighting cables
- White flags represent the presence of Roundup Ready™ technology

Survey flags are attached to trees, fences, or stakes
Surveyor flags are attached to trees, fences, or stakes to identify, locate and mark features on the land that need to be measured and recorded before land can be developed. Surveyor flags are also known as streamers or tapes. They are brightly coloured and are used to identify survey points, boundary lines, and potential hazards. They can also be used to indicate the correct road or turn, or a proposed or approximate location for some future work. Surveyor flags are often used in conjunction with stakes, which may have simple generic markings or symbols and colours that explain what the surveyor found in that spot.
The colours of surveyor flags have different meanings. Red flags mark the ground to signify conventional varieties with no herbicide technology traits and indicate caution. They also indicate electric power lines, cables, conduit and lighting cables. White flags represent the presence of Roundup Ready™ technology and areas of proposed excavation, generally found at construction sites. Yellow marks areas of natural gas, oil, steam, petroleum or gaseous materials. Blue means potable water (meaning good for human consumption). Purple indicates reclaimed water and irrigation lines. Orange flags indicate communication lines, alarm/signal lines, cables, or conduit. Green indicates sewers and drain lines.
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Flags are brightly coloured to indicate different things
Surveyor flags, also known as streamers, are brightly coloured to indicate different things. They are attached to trees, fences or stakes placed by the survey. The colours and symbols on the flags explain what the surveyor found in that spot. For example, red flags indicate electric power lines, cables, conduit and lighting cables, while yellow marks areas of natural gas, oil, steam, petroleum or gaseous materials. White flags represent areas of proposed excavation, usually found at construction sites. Surveyor flags can also be used to indicate a path or a proposed work site.
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Flags with no markings could mean it's part of a path or a proposed work site
Surveyor flags are sometimes referred to as streamers. They are attached to trees, fences, or stakes placed by the survey. Sometimes these flags have colours and symbols that explain what the surveyor found in that spot. Other times, these markings may lack symbolism, which could mean it's part of a path or a proposed work site.
Surveyor flags are used to identify survey points, boundary lines, and potential hazards. They are brightly coloured and attached to thin metal rods. The colours of the flags have different meanings. For example, red flags indicate electric power lines, cables, and lighting cables, while yellow marks areas of natural gas, oil, steam, petroleum, or gaseous materials.
If you see a flag with no markings, it could be that the surveyor has placed it to indicate the correct road or turn. It could also be a proposed or approximate location for some future work.
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Red flags indicate electric power lines, cables, conduit and lighting cables
Surveyor flags, also known as streamers, are attached to trees, fences, or stakes. They are brightly coloured and are used to identify, locate and mark features on the land that need to be measured and recorded before land can be developed. They can also be used to indicate a proposed or approximate location for some future work.
Other colours of flags are also used to indicate different things. For example, white flags represent the presence of Roundup Ready™ technology, which is tolerant to glyphosate or Roundup® herbicide. Yellow flags mark areas of natural gas, oil, steam, petroleum or gaseous materials, and blue flags mean potable water.
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White flags represent the presence of Roundup Ready™ technology
Surveyor flags are attached to trees, fences, or stakes placed by the survey. They are used to identify, locate and mark features on the land that need to be measured and recorded before land can be developed. They come in different colours, and each colour represents a different technology.
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Frequently asked questions
Each colour represents a different technology. Red flags mark the ground to signify conventional varieties with no herbicide technology traits, while white flags represent the presence of Roundup Ready™ technology. Yellow flags mark areas of natural gas, oil, steam, petroleum or gaseous materials, and blue flags mean potable water.
Survey flags are brightly coloured flags attached to thin metal rods or wooden stakes. They are sometimes referred to as streamers or ribbons.
Survey flags are attached to trees, fences, or stakes placed by the survey. They are used to identify survey points, boundary lines, and potential hazards.
These flags may be marking a path or a proposed work site. They could also be indicating the correct road or turn.
Survey flags are used to identify, locate and mark features on the land that need to be measured and recorded before land can be developed. They are a safety measure to ensure that any groundwork or digging can be done safely.











































