Sepp Holzer on ponds

I would like tp build a pond for fishing.  I have 5.5 acres of aloping land with house.  It slopes down about 80 feet according to the contour maps.  There are two ravines carved by rain and time in the back 2 acres.  The soil is sand subsoil with leaf humus from the hardwood trees.  Zone 8a.  Lots of BFTs big fat trees.  Pecan and oak.  They say the sand is roughly 20-30 feet before it hits clay.  We get abput 45 inches of rain per year.

If i dam up the two ravines, would rain gradually fill into a pond?

Thoughts encouraged!
Jeff D

Bump………..I’m fascinated by the role of beavers in the hydrology and ecosystem. One of my favorite camps is above a beaver pond. I did a web search and found a article stating biologists had reintroduced beavers to the stream. More searching led to articles about beaver reintroductions and programs nationwide. Here in Germany we were on a walk and found a beaver reintroduction project. It’s all the rage currently and for good reason I believe. The pond beside my camp is also a favorite place for a moose. Ive seen it two years running now. I hope it finds a mate. The beaver ponds created a small area of diversity. The birds and butterflies love it. Trout might like it. I wouldn’t be surprised if it’s sub-irrigating the local area.

I don't know why, but it never occurred to me Moose lived in Germany.   I had always assumed that they were a strictly North American animal.

Built with these key design elements in mind, a pond can literally green a desert. Video evidence and key design elements explained by Zach Weiss (Sepp Holzer's protege)  here: https://www.youtube.com/watch?v=-tR1hkouW1o