How can I contribute?

Participating in DRIP is easy: you can contribute simply by identifying dams on satellite imagery and clicking and saving their locations. We ask you to register once, so we can keep track of the number of dams geo-referenced by each of our contributors. Each month, the top contributor to DRIP will be rewarded with a dedicated GLOBIO4 coffee mug!

The procedure is simple:
  1. Login (or register, if it is your first time)
  2. Explore suspicious locations worldwide by clicking the "Move to next location"-button, you can filter for a region and basin if you like
  3. Search the presented satellite image for man-made barriers (you can zoom in/out or move around a bit)
  4. If you identify a barrier, select the most suitable barrier type from the "Barrier mapping tool" menu and add it by clicking on the barrier location in the satellite image
  5. If you made a mistake, change the barrier type or delete the point
  6. Click "Close" on the popup box to finalize and move to the next suspicious location by pressing the button in step 2 again
  7. If no barriers in rivers of lakes identified, then check the box "Check if no barrier at this location and click the button to continue". If, while exploring, you have moved away from the suspiciuous location, click the button first to return to the location, then check the box followed by (again) clicking to button to continue to the next location.
  8. Of course you are also able to freely explore the map and identify barrieres in rivers and lakes on your own.
Barrier types

If possible, identify the type of dam based on the following characteristics:

  1. Dam: a dam is a barrier that blocks or constrains the flow of water and raises the water level (possibly forming a reservoir)
  2. Weir: a weir is a relatively small barrier which allows the water to flow over it
  3. Sluice: a sluice is a movable barrier aimed at controlling water levels and flow rates in rivers and streams
  4. Unknown: if you are not sure on the type, characterize it as unknown