There is no guide currently, trial and error. Also realize that seed id number may/ does affect terrains. Generally stay under the number 1 as that is equal to 100% so .8 is 80% of whatever value. <ford_distance_factor value="number"/> and <distance_height_offset value="number"/> also directly affect maps. Start with all values at a default every time for example .05 and work from there up and down

From the guide:

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1687394472

Terrain in Dawn of Man, like in most games, is generated by combining noise of different frequencies: Large mountains are low-frequency high amplitude, small bumps are high-frequency low amplitude.

This line allows you to modify the amplitudes of the different noise layers, the initial numbers define the amplitudes of the low-frequencies (the height of large mountains), and the later numbers define the amplitudes of the high_frequencies (the height of the small bumps).

Hey Martino, I've read the guide over and over for hours while creating my mod. However, it has not assisted in me making the type of terrain I'd like to see. It seems that as I change the heights to get the terrain I desire the water changes and i'm no longer on a river (also played with the seed several times). I've got it to a place through trial and error, although, having some semblance of what each specific number does would have expedited that process. I still have no idea what they do individually if I was to make a new terrain type however.

Have you read this, too? Maybe it will help you: https://steamhost.cn/steamcommunity_com/workshop/filedetails/discussion/1693186543/1846946102861406284/

I did not. I'll look that over throughly and see what i can do. Thanks!

You're welcome. If you find something out or have specific questions, post it there.