District leadership

About us

Ann B. Shortelle, Ph.D.

Executive Director

St. Johns River
Water Management District

Lisa A. Kelley, J.D.

Assistant Executive Director

St. Johns River
Water Management District
Headshot of Jeff Prather

Jeff Prather

Director

Division of Regulatory Services

Erich Marzolf, Ph.D.

Director

Division of Water and
Land Resources

Michael Register, P.E.

Director

Division of Water Supply
Planning and Assessment
Head shot of Dale Jenkins

Dale Jenkins, P.G.

Director

Division of Projects
Headshot of Tom Frick

Thomas Frick

Director

Division of Strategic
Planning and Initiatives
Headshot of Tiffany Cowie

Tiffany Cowie

Director

Division of Management Services
and Public Affairs
Mary Ellen Winkler headshot

Mary Ellen Winkler

Interim General Counsel

District organization

Operating agreement with the Florida Department of Environmental Protection
District delegation policy
organizational chart of the St. Johns River Water Management District