Paddington Arm, Grand Union Canal (Kensal Road Stretch)
Photos taken between 6:35pm and 7:08pm
View from Ladbroke Grove Bridge looking West
Looking west: The water is generally calm, with only slight disturbance around the moored boat and along the edges. However, green surface growth/algae is clearly visible along the left-hand margin, forming irregular patches close to the wall and vegetation.
View from Ladbroke Grove Bridge looking East
Conditions are much easier to see because there is less glare. The canal surface is predominantly clear and reflective, but patches of green algae or other floating plant material are visible along both margins.
The algae is localised rather than forming a continuous surface bloom, particularly beside the right-hand bank and in smaller scattered patches towards the centre-right. The accumulation at the edges suggests that relatively still water is allowing the material to collect in sheltered areas.
click to enlarge image
The canal is predominantly calm and reflective, with most of the central water surface open. There is, however, a noticeable green band of algae or floating vegetation along the far bank, particularly around the moored boats and quieter margins.
A fairly continuous strip of green surface material runs alongside the moored narrowboat. The central water remains largely clear of it. The strong reflections also indicate relatively still conditions
There are larger scattered patches extending farther away from the bank into the open water, especially in the foreground. At the same time, gentle ripples are visible across part of the surface, breaking up the reflections.
Green floating growth is no longer confined mainly to the canal edge. Numerous irregular patches extend well out into the open water, producing quite substantial surface coverage.
A particularly dense, almost continuous green layer trapped along the bank between the moored boats. This looks like a sheltered accumulation zone where very slow water movement is allowing the material to concentrate.
Green surface growth is widespread across a large proportion of the visible water, extending from beneath the overhanging tree well into the channel. There is still open water, but the growth is substantially more extensive.
A very large proportion of the visible water is covered, with some areas forming an almost continuous bright-green layer. Only irregular channels and patches of open water remain.
appears consistent with dense floating plant/algal material, potentially including duckweed. Large mats and numerous smaller patches are distributed across the surface, particularly around the sheltered area beneath the overhanging tree
This section showed the most extensive accumulation of algae/duckweed observed during the survey. Dense green growth formed an almost continuous covering across a substantial proportion of the canal, extending well beyond the margins into the main channel.
At the boundary there is open, rippled water in the foreground, followed by an extensive mat of green growth across the quieter water beyond. The greatest accumulation occurs in calmer and more sheltered water, while areas experiencing greater surface movement retain more open water.
At the end of this section, stronger water movement was evident, with ripples extending across most of the canal surface. In contrast to the dense algae/duckweed encountered nearby, the open water here was largely free of green surface growth. Three coots were also observed using the channel. The contrast suggests that the floating growth was accumulating most heavily in quieter, more sheltered areas of the canal.
View from Ha'Penny Bridge looking East
Clear surface movement, with rippling extending across most of the canal. The water surface is open and, importantly, there is no obvious algae or duckweed visible.
View from Ha'Penny Bridge looking West
Despite the relatively calm appearance farther along the channel, the water remains largely unobstructed, with the evening sky reflected across the surface. Small patches of algae or duckweed remained visible along the canal margin,
Overall Visual Assessment: Based solely on these visual observations...
| Indicator | Observation | Assessment |
|---|---|---|
| Water colour | Natural / expected | ● Excellent |
| Water clarity | Moderate | ▲ Fair |
| Water movement | Calm | ▲ Fair |
| Floating litter | None | ● Excellent |
| Surface pollution | Significant | ■ Poor |
| Wildlife activity | Some observed | ▲ Fair |
| Oil / foam | None | ● Excellent |
| Bank vegetation | Healthy / abundant | ● Excellent |
Waterway appears to be in good visual condition, with some severe issues observed and no significant visible pollution.