Depth maps as prints

What your lake looks like under the surface

Your cottage or pier goes in the centre. Around it we draw the lake's depths, islands and shores from open data by Traficom, the Finnish Environment Institute and the National Land Survey of Finland.

Your cottage or pier goes in the centre of the map.

You usually get the print files within a few minutes, and any photo lab can print the map.

The depths are drawn as layers

The water is split into layers by depth. The deeper the water, the lower its layer, and the shadows along the layer edges make the shape of the bottom visible, even though the poster is flat paper.

Saimaa, Astuvansalmi. A printed poster, with depths from 0 to 62 m in layers.

Saimaa, Astuvansalmi. A printed poster, with depths from 0 to 62 m in layers.

The Saimaa, Astuvansalmi map with the aerial photo, framed on the log wall of a cottage. The lake shows through the window in evening light.
Saimaa, Astuvansalmi with the aerial photo, printed at 50 × 70 cm and framed. The map is the real print file.

You get the map with and without the aerial photo

The lake is drawn in layers on both. One has the National Land Survey's aerial photo in full colour on the land, the other a plain surface. You get both for the same price and decide yourself which one to print.

Layers with aerial photo: Saimaa, Astuvansalmi

Layers with aerial photo

The lakebed is drawn in up to 19 depth layers, and the shadows along their edges make the flat poster look three-dimensional. The land shows the National Land Survey's aerial photo in full colour: forests, fields, roads and houses.

Layers: Saimaa, Astuvansalmi

Layers

The lakebed is drawn in up to 19 depth layers, and the shadows along their edges make the flat poster look three-dimensional. The land shows the shape of the rock.

Up close

The print file is made at 300 dpi for the size you order. Small islands and the edges of the depth layers are drawn at that size, and the picture is not enlarged afterwards.

The Astuvansalmi rock paintings on the north shore of the strait, across from Astuva island. Part of a 50 × 70 cm print.
The Astuvansalmi rock paintings on the north shore of the strait, across from Astuva island. Part of a 50 × 70 cm print.

How an order works

  1. 1

    Choose the place

    Search for the address or move the marker to your pier. The map is framed around it.

  2. 2

    Choose size and frame

    30 × 40, 50 × 70 or 70 × 100 cm. The frame can reach from the nearest shore to the whole open lake.

  3. 3

    Pay and download

    We start drawing the map while you pay. You get it with and without the aerial photo, each as a PDF and a JPG (about 15 to 120 MB together). The files are usually on your order page a few minutes later, and we email you the link too.

  4. 4

    Get it printed

    Pick the map you want printed and upload its JPG to a photo lab's website. The lab posts the poster to you. A 50 × 70 cm print on Hahnemühle Photo Rag 308 costs about €54 with postage, for example. Your order page lists prices and instructions for a few labs.

The map's data comes from official surveys

Depths come from Traficom's nautical chart database and the Finnish Environment Institute's lake depth data. Shorelines, islands, place names and the shape of the land come from the National Land Survey of Finland. The shape of the lakebed is worked out between depth areas and soundings, so the map shows the bottom well but is not for navigation. The sources and data dates are listed on your order page and saved inside the files.

How a map is made →

1,865
lakes in the Finnish Environment Institute's depth data
149,457
depth areas charted by Traficom
0.5 m
resolution of the National Land Survey's aerial photo
2 m
resolution of the terrain elevation model

Questions

Which lakes can I order a map of?

Lakes with depth data. The Finnish Environment Institute's data covers about 1,900 lakes, and Traficom has charted Saimaa, Päijänne and the other lakes with shipping lanes, as well as the coast. The map on the order page shows the depth areas as soon as you pick a spot. If your lake has none, we tell you and refund you, unless you want a map without depths.

How accurate is the map?

Shorelines and islands come from the National Land Survey of Finland, and the height of the land is measured every 2 metres. Depths are based on soundings and depth areas, and the lakebed between them is calculated. The map shows the shape of the lake correctly, but it is not a navigation chart.

Can I change the title or the frame?

You write the title and subtitle when you order. Both are optional. If you leave them empty, there is no text below the map and the map gets taller. The map is made as soon as you pay, so check the text and the frame in the preview before paying.

What does an order include?

The map in two versions: with the aerial photo and without it. For each you get a print-ready PDF with 3 mm bleed and a JPG at 300 dpi, for the size you chose. You can have the poster printed wherever you like: the JPG suits photo labs' web orders and the PDF suits print shops. The map is designed for matte paper.

All questions →

Where is your cottage?

Search for the place and see straight away what fits on the map.