T is for Terrain Hierarchy: Hitting the Trail with the Wilderness Survival Guide

This may not sound like much but I think quite useful. Page9.

1. Seacoast

2. Swamp

3. Forest

4. Plains

5. Desert

6. Hills

7. Mountains

A hierarchy of terrain. If a territory has two or more different types of terrain consider it the higher terrain (1 highest, 7 lowest). The examples given are a sandy beach bordering an ocean is a seacoast not a desert. A low lying area with standing water with lots of trees is a swamp not a forest.

Common sense is advised but may help to guide which wandering monster table to use, which terrain movement modifier etc.