The NRCS 590 pond planning, design booklet p.10 and 11 of the booklet or pages 21 and 22 of Adobe reader will tell you just what you are wanting to know. I tried to highlight and copy but could not. I do not know how to attach the doc. on a reply post here. Sorry. If you google NCRS 590 planning design booklet the site will come up but may not work due to the GOV shutdown. Good luck.

Life is more fun with a pole in your hand.