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How to determine a lake is deep on a topographic map?

I'm not exactly sure if there's a way to show if the lake is deep or not. Do I have to draw contour lines together closely to say that they are deep in the lake? Do I draw a different shade of blue to say it's deep in that section of the lake? Or do I simply leave it alone? Thanks. :) P.S. please don't leave unnecessary comments like "who cares" or something. Thank you.

Public Comments

1. Usually water depth would be shown in varying shades of blue, from the lightest blue for the shallowest depth to the darkest blue for the deepest depths. Here's an example: http://gf.nd.gov/gnfapps/maps/lakecontours/audubon00.pdf Or find a better example for yourself from this site that better fits your map. http://gf.nd.gov/fishing/lakedata.html Edit: I remembered that you asked multiple questions, so I wanted to make sure I answered them all. Do I have to draw contour lines together closely to say that they are deep in the lake? They should be the same as the contour lines that show elevation, with the same interval. It does show depth, but the main purpose is to show the steepness, not the depth. It doesn't necessarily have to be different shades of blue, it can be one. If you use different shades, they do show depth, but they're really showing the contours.
2. The amount of space in the lines is how steep it is, but not necessarily how deep it is. A cliff and a sidewalk could have the same amount of space between their lines. You're right that you should give the deeper area a different shade of blue, along with a contour line to section it off. You can also add numbers or a color key to help your reader understand what you're trying to show.