Discover our Floating Weed Manager! A service designed to help you effectively monitor and manage aquatic weeds. You can freely explore its functionality using the historical time-series of two key examples: Lake Okeechobee, Florida, and Winam Gulf, Lake Victoria. A licensed login is required to access near real-time data.
For technical details, please visit our website.
As a not-for-profit research institute, we're committed to offering this service at affordable prices, covering just enough to maintain and improve it. If you'd like the Floating Weed Manager set up for your specific lakes, reservoirs, or rivers, please get in touch to discuss licensing and get a setup quote.
There are three map views available; optical, radar and change.
There are layout ratio buttons at the top of the page. The timeseries graphs are hidden by default but will appear when you click any of the buttons except 'Hide graph'.
Four background layers are available under the Layers button at the bottom left of the map; light, satellite, streets and dark.
Click the 'Toggle comparison map' to show and hide an extra map that contains a slider to layer two dates.
Click the Link maps button at the top left of the page to synchronise the map view of both maps. When you zoom or pan one map, the other will map will move to the same view.
You can click on the map to add a marker (useful for pinpointing a location to send to a contractor).
When you change the date on the first map, the left side of the second map will update to show the data for the same date.
Changing the date on the second map will update the data of the right side of the second map.
Use the slider button on the second map to show more or less of the image for the first or second map images.
The opacity sliders for each map layer are available under the map key for each map.
Raw imagery is available under the Layers button for recent dates (for both optical and radar).
To view polygons of the lake, hover over the Layers button of either map and click 'Polygons'.
Weekly composites combine one week's worth of Sentinel-2 optical imagery to provide a more complete, cloud-free snapshot of the waterbody. This layer shows the location of floating weed as a probability ranging from 0% (not classified as floating weed in any images) to 100% (classified as floating weed in every image). Probabilities in the middle range may indicate floating weed has moved between images or has been obscured by cloud in one or more image. It could also relate to uncertainty in the classification (such as with mixed emergent-floating vegetation).
The weekly composite layer is shown as a colour ramp of 0% 100%.
If you are viewing Optical data, when you click on a polygon, a pie chart of the chosen date's data will appear.
GeoTIFF downloads are available under each map for the chosen map date.
A change timeseries download is available under the graph.
The piechart timeseries download is available under the graph.
The Get the WMS button takes you to the getCapabilities file for the WMS.
To retrieve the WMS for a specific date in your GIS software, add the dates as year, month, day to the WMS call for the specific layer and lake. Example WMS call.
The graphs show the change timeseries for from 2022 to now.
You can change the graph units.
The are various options in the hover bar at the top of the graph that enable visualisation.
The graph is interactive, you can hover over each trace to see its values at each date for each trace and zoom or pan around.
You can click on the items in the graph legend to toggle each trace.