There are over a dozen lakes named Mud Lake within the U.S. state of South Dakota. According to the Federal Writers' Project, these lakes were so named on account of the muddy condition of the lake bed or lake shore.
Mud Lake, Brule County, South Dakota. 43°49′38″N 99°02′03″WMud Lake, Clark County, South Dakota. 44°38′14″N 97°38′22″WMud Lake, Clark County, South Dakota. 44°51′17″N 97°44′15″WMud Lake, Day County, South Dakota. 45°14′22″N 97°37′20″WMud Lake, Deuel County, South Dakota. 44°46′22″N 96°35′27″WMud Lake, Grant County, South Dakota. 45°00′32″N 96°40′36″WMud Lake, Kingsbury County, South Dakota. 44°28′48″N 97°35′21″WMud Lake, Lake County, South Dakota. 44°10′08″N 96°58′33″WMud Lake, Lawrence County, South Dakota. 44°33′44″N 103°59′54″WMud Lake, Marshall County, South Dakota. 45°43′41″N 97°15′48″WMud Lake, Moody County, South Dakota. 43°59′55″N 96°47′23″WMud Lake, Pennington County, South Dakota. 43°58′07″N 103°55′10″WMud Lake, Pennington County, South Dakota. 44°06′35″N 103°52′50″WMud Lake, Roberts County, South Dakota. 45°28′38″N 96°55′03″WMud Lake, Spink County, South Dakota. 44°46′17″N 98°30′39″WMud Lake, Spink County, South Dakota. 44°53′30″N 98°36′08″WMud Lake, Turner County, South Dakota. 43°17′54″N 97°02′46″W