Depth contours help you examine underwater slopes and deeper areas on the map. In Uistio, you can switch on the depth layer alongside your fishing spots where the source data provides coverage.
How to read depth contours
A depth contour connects points of equal depth. Look at the depth values and the distance between the lines: for the same depth interval, closely spaced contours show a steeper change in the lakebed than widely spaced contours.
- Turn on the depth layer. Find the waterbody on the map and zoom in to the area you want to explore.
- Look for changes in the lakebed. Identify shallower and deeper areas and the slope between them. Contours show the shape of the bottom, not where fish are.
- Return to your own observations. Compare the area with your saved spots and catch entries. Check the weather and fishing conditions before the trip too.
Depth data and its limits
Depth information is provided by the Finnish Environment Institute (Syke) under the Creative Commons Attribution 4.0 International licence (CC BY 4.0). The data may have been processed, styled, generalised or combined for Uistio.
Coverage and detail vary. The map is intended to support fishing-trip planning, not navigation or the assessment of safe passage.
Private spots and community spots
Your own saved places and places shared by others can appear on the same map. Saving a place for yourself and sharing it with the community are separate choices.