The area around 19:16 looks like a good spot for a home. You really don't want to build homes on perfectly flat land, as there's no drainage. Ridgelines are best, not at the very top due to storm winds and hurricanes, but definitely along or near a crest in the topography.

I spent several years playing in the rapids on the New River near Blacksburg, Virginia. Definitely a river rat! We used to have races, to see who could go upriver the fastest. The current was way too strong to outswim, so we hand to boulder our way upstream, mostly underwater. Your rocky creek looks like fun!

It withstood 4' of fast-moving flood water from Hurricane Katrina. Here's what they did:

– Graded up the center. Not much, but more than 1% and less than 5%. They also sloped it to the area's natural drainage.
– Installed 5 French drains beneath the house and radiating away from the house, as well as two open storm culverts.
– Pounded 16 pilings into the dirt and mud beneath their rather large, 3,600 square foot single story house: 4 at corners, 8 along the edges (2 at each side), and 4 in a center square. If you drew horizontal and vertical lines over the pilings, you'd have a Tic-Tac-Toe grid with a piling at each intersection.

Note: I do not know whether they used creosote telephone poles (common back then), concrete-filled, very low-rust steel pipe (which I heard him mention one time), or they just drilled deep holes and filled it with concrete. The point is, they used pilings.

– The tops of the pilings extended 5' above the ground, which is 1' higher than than all floods in recorded history for that area.

– French drains were brought into the area beneath where the home would sit atop the pilings.

– About a foot of pea gravel was placed around the pilings.

– Rust-proofed steal I-beams rested on top of and were firmly attached to the pilings.

– The home was built on top of and firmly attached to the I-beams.

Like I said, it withstood Hurricane Katrina, both winds and flooding.

Hey! Good luck with the land clearing and building!