Tideway Conditions

🌊 Tideway Information

🔄 Fresh data • Updated: 2026-04-29T14:06:05 • TTL: 3600s

🚩 PLA Tideway Flag

Flag Color: Black

Status: Low Fluvial Flows

Source: PLA Tideway (Updated twice daily)

Flag Meanings:

RED: Very Strong Fluvial Flows - Dangerous conditions
YELLOW: Strong Fluvial Flows - Navigate with extreme caution
GREEN: Average Fluvial Flows - Navigate with caution
BLACK: Low Fluvial Flows - Lower than usual conditions

The tideway flag system operates between Teddington and Putney on the tidal Thames.

🌊 Richmond Tidal Information

🌊 Next High Water

Time: 30 Apr @ 02:44 BST

Predicted Height: 4.49m

🏞️ Next Low Water

Time: 29 Apr @ 22:10 BST

Predicted Height: 0.45m

Next Low Tide

Time: 29 Apr @ 22:10 B

Predicted Height: 0.45m

Station: Richmond (0116)

Source: PLA Tidal Predictions (Live)

Heights in metres above Chart Datum. Surge shows difference between predicted and observed levels.

🌉 Bridge Tidal Predictions (Next 48 Hours)

Hammersmith Bridge

HW: | LW:

High Water

Low Water

Putney Bridge

HW: | LW:

High Water

Low Water

Error calculating bridge predictions: can't compare offset-naive and offset-aware datetimes

Summary Format

Flag: Black
Richmond LOW: 29 Apr 22:10 BST

This appears in the main dashboard summary

{
  "data": {
    "api_source": "PLA Tideway Flag + Richmond + London Bridge Tidal Data",
    "bridge_predictions": {
      "error": "can\u0027t compare offset-naive and offset-aware datetimes",
      "hammersmith": {
        "high_tides": [],
        "low_tides": [],
        "name": "Hammersmith Bridge"
      },
      "putney": {
        "high_tides": [],
        "low_tides": [],
        "name": "Putney Bridge"
      }
    },
    "last_updated": "2026-04-29T14:06:05.104177",
    "london_bridge_tidal": {
      "high_tides": [
        {
          "height": "6.2",
          "time": "29 Apr @ 10:06 BST"
        },
        {
          "height": "6.78",
          "time": "30 Apr @ 00:44"
        }
      ],
      "low_tides": [
        {
          "height": "0.97",
          "time": "29 Apr @ 18:52"
        },
        {
          "height": "0.63",
          "time": "30 Apr @ 07:29"
        }
      ],
      "station": {
        "gauge_code": "0113",
        "name": "London Bridge",
        "source": "PLA Tidal Predictions (Live)"
      }
    },
    "richmond_tidal": {
      "next_event": {
        "height": 0.45,
        "is_past": false,
        "observed_height": null,
        "predicted_height": 0.45,
        "surge": null,
        "time": "29 Apr @ 22:10 BST",
        "type": "low"
      },
      "next_high": {
        "height": 4.49,
        "is_past": false,
        "observed_height": null,
        "predicted_height": 4.49,
        "surge": null,
        "time": "30 Apr @ 02:44 BST",
        "type": "high"
      },
      "next_low": {
        "height": 0.45,
        "is_past": false,
        "observed_height": null,
        "predicted_height": 0.45,
        "surge": null,
        "time": "29 Apr @ 22:10 BST",
        "type": "low"
      },
      "raw_high_tides": [
        {
          "height": "4.49",
          "time": "30 Apr @ 01:44"
        }
      ],
      "raw_low_tides": [
        {
          "height": "0.45",
          "time": "29 Apr @ 21:10"
        }
      ],
      "recent_event": null,
      "station": {
        "gauge_code": "0116",
        "name": "Richmond",
        "source": "PLA Tidal Predictions (Live)"
      }
    },
    "summary": "Flag: Black\u003cbr\u003eRichmond LOW: 29 Apr 22:10 BST",
    "tideway_flag": {
      "color": "black",
      "last_updated": "2026-04-29T14:06:05.104183",
      "source": "PLA Tideway",
      "status": "Low Fluvial Flows",
      "warning": null
    }
  },
  "metadata": {
    "enabled": true,
    "error": false,
    "error_message": null,
    "from_cache": false,
    "timestamp": "2026-04-29T14:06:05.953925",
    "ttl": 3600
  },
  "service": "tideway"
}

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