Todd H. Votteler, Ph.D., is president of Collaborative Water Resolution and a Four Worlds Consulting partner. Votteler is editor-in-chief of the Texas Water Journal and Texas+Water and hosts the Talk+Water podcast. He is a fellow of the Meadows Center for Water and the Environment at Texas State University (TSU), a mentor at the Austin Technology Incubator at The University of Texas at Austin (UT), and an advisory committee member for the Permanent Forum of Binational Waters.

Previously, Votteler was executive manager of science, intergovernmental relations, and policy at the Guadalupe–Blanco River Authority and chairman of the Guadalupe Basin Coalition.  He was a research scientist in Washington, D.C. for the Battelle – Pacific Northwest National Laboratory, executive director of the Guadalupe-Blanco River Trust, and chairman of the Texas Land Trust Council.

In 1996, Votteler was appointed by Senior U.S. District Court Judge Lucius Bunton as federal special master for Sierra Club v. San Antonio. In 2013, he was one of the recipients of the Partners for Conservation Award from Secretary of the Interior Sally Jewell for work resolving the Edwards Aquifer conflict. In 2016, he negotiated an agreement in Texas resolving a conflict over surface water use and potential impacts to endangered whooping cranes.

In 2018, Votteler was a faculty member for the National Judicial College’s Dividing the Waters program in Reno, a co-trainer for the Fellows Program at the UT School of Law’s Center for Public Policy Dispute Resolution, and a co-trainer for the Water Conflict and Transformation Workshop at AWRA’s Conference in Baltimore. In 2019, Votteler lectured in China on transboundary water conflicts. He has taught graduate and undergraduate courses on water conflict.

Votteler has a bachelor's degree in natural resources from Sewanee, a master's degree in natural resources from the University of Michigan, and a doctorate in environmental geography from TSU.