Suggest you do a search in google or some other search engine. Search for "small fish pond", you will get more hits and info than you will ever need.

: I plan to build a small water fall with a collection pond.
: Do you know what considerations are needed for filtering before the pump? Any books you would suggest?
: The area is "wooded" with various oaks and pines, so the "creek" to the pond will get ample leaves and pine needles.

: Thank you in advance.