How much elevation change do you deal with?

A lot of the most visible stuff here is Paul's mountain property. But that's really different topography than what I deal with. I decided to check it out on the county's GIS platform. The highest contour on my 20 acres is 1266' and the lowest is 1242. That shows a difference of 24' but most of the parcel is within six feet of 1254'. And the only place that you can't just casually walk is near the south west corner where the road was elevated quite a ways above the natural level of the property.

That said, there's no area that you would call flat -- there's a rolling change everywhere you look. And for instance, if I want to put in a hightunnel, recommendation is that it be flat...how flat? if one end of a 50' tunnel is two feet higher than the other end does that matter? If I had clay, I'd wonder how much "rise over run" there needs to be to consider terracing.

So what's your situation? I'm curious what counts as flat vs not.

We have a very weirdly laid out bit of land.

It's two and half acres, 200 metres from the bottom to the top, with nearly 50 metres of elevation change.

It's an interesting couple of acres!

As to what counts as flat, most of our land is terraced, so there are lots of 'flat' bits. Very flat in fact. But moving up to the next terrace is hard work!

Zounds, yall have an amazing property there Burra!  Now I see how wood gathering for your RMH is not a far flung enterprise.  

I live on top of a mountain though my house is much lower than my front gate.

Actually my house is about mid point and the back of my property is the lowest.

My property has a runway where planes used to land, my guess would be in the 1940s though I have no idea.  So that part of my property is flat.

The creek that runs in front of my house was changed due to that runway as now it goes nowhere.  It probably originally connected to another creek that goes nowhere.

Observing what water does when it rains is really interesting because it mostly follows my winding road.

This (invaluable to me) map site has a contour feature that sure is handy. The shaded contours really stand out. I hope it's useful to others as well. The view can be changed with the settings on the right.
This is Current River in Missouri, but you can zoom out, scroll to your property, and zoom in.
https://caltopo.com/map.html#ll=36.98001,-90.99006&z=16&b=imagery&o=r&n=1

As far as my 19 acres goes....(all figures are approximate. Used Google Earth to measure)
4 acres cleared flat areas, including sections of new and old driveways.
9 acres of gently sloped, and flat woods
6 acres of steep hilly wooded areas.

A straight line from my house to the driveway entrance measures 755 ft.
Because of the hilly terrain, the winding driveway measures 1200 ft.
The house sits roughly 125 ft above the driveway entrance.

Edit to add...the highest point on the property is 60 ft above where the house sits. A house was at that high point until the federal govt. purchased a portion of the property for a project in the late 80's.

Our property is a rather unique shape with a total elevation change of 14.5 meters (about 47 ft). The bigger issue is that although overall, it's a south facing slope, we have near the peak elevation halfway up, then down to a flat "flood plain" with a seasonal creek, then another steep section.

So I really notice the steep sections if I'm having to push loads up in Big Green, and occasionally have to be careful that Big Green doesn't pull me down one of the hills, which is steeper than most people give it credit for.