There are currently 3 ditch records where Mann Joint Ditch.

Ditch Number	Ditch Name	Petition Date	Decision Date	Action	Acres Drained	Approximate Cost	Township	VMS Number
720	Mann Joint Ditch	11 Sep 1905	23 Dec 1905	Dismissed			Washington	9915
769	Mann Joint Ditch	23 May 1906	23 Jul 1906	Constructed	453.73	$1,666.33	Washington	9915
769	Mann Joint Ditch	2 Jan 1940	14 Oct 1940	Constructed	490.73	$938.09	Washington	9894