Giant Hogweed Maps

As part of our Hogweed Eradication programmes, we survey the entire river and all its tributaries looking for Giant Hogweed (and other invasives) and record them on master maps - see below.

Current Map Links:

See how to use them to find plants in this video THE Map as a SatNav. You can zoom in, move around, or click on an item to see more detail. If you are logged in to a Google account, you have even more options: if you want to hide/view different sections (layers), click the box top left or go full screen by clicking the broken box top right. On a mobile phone it's better in landscape mode. Bookmark the page to get back there quickly next time.

We keep this as up-to-date as we can. Please report any sightings (and even treatment if you can) to You can record the details on this Google map at //, or share via email from any gps-powered app on your phone, eg Maps or Compass on iphones, or IRecord. Or even hand-mark on a paper map!

Tyne Hogweed found in 2023

Esk Hogweed found in 2023

Plant Type

Giant Hogweed



Hogweed Count

One/Some    Blanket

Hogweed Colour

Clear  Young Flower Last-Year

How to Browse:
* Zoom In/Out: bottom left
* More Detail:    Click on an icon
* Move Around: Click & Drag
* Full Screen:      top right
* Show Legend: top left
--- Show/Hide Layer: /
--- Show All Items :     /
--- Satellite View:    /(at end)