South Dakota law requires that all persons who are convicted of certain sex offenses must register with the County Sheriff and disclose their current address. They must re-register twice annually and within 5 days of an address change. All sex offenders are included on this list solely because of their conviction and state law, not because the State has made an individual determination of the person's dangerousness.
For the convenience of Clay County's citizens, a list of those currently registered as sex offenders can be found here as well as at the Sheriff's Office. The Clay County Sheriff updates this information regularly. However, this information can change quickly. You are cautioned that the information contained on this site may not reflect the current residence, status, or other information regarding the offender. If you believe that any of the information found on this site is in error, please notify us at ccso@claysheriff.org or (605)677-7100.
See our FAQ page for more information about the registry.
Click here to see a map of Community safe zones in Vermillion, SD. For more detailed information, please contact us.
Scroll down to see a list of Clay County registered sex offenders.
For more information about these offenders and to see a searchable list of sex offenders anywhere in South Dakota, click here:
South Dakota Sex Offender Registry
To search a National Database of registered sex offenders, click here:
National Sex Offender Registry
Return to:
CLAY COUNTY SHERIFF'S OFFICE
SEX OFFENDER LIST

Adams, Marvin E.
833 E. Duke St. #29
Vermillion, SD 57069
Rape, 3rd Degree/Sexual Contact w/minor
Date of Offense: 02/16/1992
Date of Conviction: 07/10/1992

Boston, Robert A.
15 Franklin St.
Vermillion, SD 57069
Sexual Exploitation of minor/Sexual Contact w/minor/
Possession of Child Pornography (victim age: 14-15)
Date of Offense: 01/07/1999
Date of Conviction: 04/22/1999

Brende, Justin D.
833 E. Duke St. #39
Vermillion, SD 57069
Sale of Child Pornography
Date of Offense: 07/18/2002
Date of Conviction: 11/05/2002

Buum, Ronald Lee
1609 E. Cherry St.
Vermillion, SD 57069
Indecent exposure
Date of Offense: 07/11/2003
Date of Conviction: 07/29/2003

Deal, David A.
833 E. Duke St. #64
Vermillion, SD 57069
Sexual contact w/minor (victim age: 15)
Date of Offense: 01/01/2003
Date of Conviction: 03/28/2003

Fuller, Troy T.
1215 Lincoln St. #101
Vermillion, SD 57069
Possession of Child Pornography (6 counts)
Date of Offense: 07/01/2008
Date of Conviction: 06/04/2009

Gobell, Rodney L.
46577 Missouri St.
Burbank, SD 57010
Sexual contact w/minor (victim age: 8)
Date of Offense: 12/23/2004
Date of Conviction: 05/16/2005

Gonzalez, Joseph R.
914 Tom St.
Vermillion, SD 57069
Att. Sexual Assault of a Child (victim age: 7)
Date of Offense: 04/19/2003
Date of Conviction:: 07/02/2003

Harkness, Robby Chris
46937 320th St.
Burbank, SD 57010
Use of Internet to Solicit a minor (victim age: 16)
Date of Offense: 04/16/2001
Date of Conviction: 10/02/2001

Hemphill, Michael W.
917 Walnut St.
Yankton, SD 57078
(Attends USD in Vermillion, SD)
Make/Sell/Possess Child Pornography
Date of Offense: 08/27/2002
Date of Conviction: 11/26/2002

Kelley, Benjermin R.
Non-Compliant/Warrant issued
Sexual contact w/minor (victim age:13)
Date of Offense:
Date of Conviction: 06/01/1999
This offender is not currently compliant.
Anyone with information as to his whereabouts is encouraged to contact the Clay County Sheriff.

Klinghagen, Jeffery
308 S. Lewis #9
Sioux Falls, SD 57103
(Works in Clay County)
Rape, 3rd Degree (victim age: 15)
Date of Offense/Arrest: 08/28/2005
Date of Conviction: 03/07/2006

Lerfald, Chad Alan
1038 Kim Lane
Vermillion, SD 57069
Sexual Contact with minor (victim age: 15)
Date of Offense: 09/17/1997
Date of Conviction: 09/30/1997

McDonald, Christopher Lee
45687 Wicker St.
Meckling, SD 57044
Sexual contact with minor/3rd degree rape (victim age: 7)
Date of Offense: 04/21/1998
Date of Conviction: 01/26/1999

Moe, Troy Leroy
2120 S. Dakota St.
Vermillion, SD 57069
Sexual Contact w/minor (victim age: 5)
Date of Offense: 07/07/1992
Date of Conviction: 06/19/1994

Muecke, Eldon Russell
1022 Tom St.
Vermillion, SD 57069
Rape/Sexual contact w/minor (victim age: 14)
Date of Offense: 04/26/2000
Date of Conviction: 01/04/2001

Pena, Marco A.
31222 453rd Ave.
Meckling, SD 57069
Rape of a Child/3rd Degree (victim age: 15)
Date of Offense: 06/10/1994
Date of Conviction: 12/17/1996

Roncskevitz, Richard Dwight
807 Cottage Ave. #12
Vermillion, SD 57069
Possession of Child Pornography (victim age: approx. 8-10)
Date of Offense: 06/19/2003
Date of Conviction: 07/02/2004

Sitting Crow, Herbert Austin
911 E. Duke St. #42
Vermillion, SD 57069
Sexual contact with child (victim age: 15)
Date of Offense: 10/15/1999
Date of Conviction: 12/22/2000

Svitak, James Eldred
833 E. Duke St. #105
Vermillion, SD 57069
(Student at USD)
Possession of Child Pornography
Date of Offense: 12/01/2008
Date of Conviction: 11/06/2009

Syverson, Kelly Lee
3015 Mary St.
Yankton, SD 57078
(Works at Polaris in Vermillion, SD)
2nd Degree Rape (victim age: 21)
Date of Offense:
Date of Conviction: 03/31/1999

Voudry, Mark Allan
122 Court St.
Vermillion, SD 57069
Sexual Contact with Child (victim age: 13)
Date of Offense: 10/13/96
Date of Conviction: 04/17/97