Below is a current list of registrants.
| Full Name | Company |
|---|---|
| Stephanie DiBetitto | Colorado Water Conservation Board |
| Josh Dickerson | Martin/Martin |
| Dan Dodson | Nilex Inc. |
| Kyle Donovan | HDR |
| Robin Dornfest | Lithos Engineering |
| Kevin Doyle | Michael Baker International |
| Philip Drazek | Kiewit Infrastructure Engineers |
| Jeanie Duncan | City of Colorado Springs, Water Resources Engineering |
| Andrew Earles | Wright Water Engineers |
| Mike Earnest | City of Aurora |
| Dorothy Eisenbraun | Respec |
| Rodney Eisenbraun | RJH Consultants |
| John Eklund | City of Grand Junction |
| Danny Elsner | Dewberry |
| Tracy Emmanuel | Otak, Inc. |
| Matthew Erichsen | Kiowa Engineering Corp |
| Marlissa Essells | HDR |
| Dan Evans | City of Fort Collins |
| Alex Ewers | SGM |
| Terri Fead | Urban Drainage and Flood Control District |
| Alejandra Ferrufino | Muller Engineering Company |
| Bill Fieselman | MIRACORP |
| Amy Finseth | HDR |
| evan fischgrund | Advanced Drainage Systems |
| Andrew Fisher | City of Greeley |
| Deborah Fisher | Water Engineering Solutions |
| Michael Flynn | Wood |
| Steven Forvilly | City and County of Denver |
| Cameron Fowlkes | City of Louisville |
| Sam Franzen | Dewberry |
| Laddie Fromelius | Bio Clean, A Forterra Company |
| Tom Fuentes | AECOM |
| Amy Gabor | Olsson Associates |
| Judah Gaioni | City of Longmont |
| Mike Galuzzi | Merrick |
| Matthew Gardella | Muller Engineering Company |
| Steve Gardner | City of Aurora |
| Stuart Gardner | Colorado Dept of Transportation |
| Penn Gildersleeve | Retired |
| Mary Gilliland | AECOM |
| Robert Glenn | City of Boulder |
| Jennifer Goldman | Merrick |
| Doug Gossett | City of Longmont |
| Peggy Graham | Independent |
| Steven Griffin | Colorado Dept of Transportation |
| Douglas Groves | City of Fort Collins Utilities |
| Eli Gruber | CDM Smith |
| Carrie Gudorf | Mesa County |
| Hailey Guglielmo | City of Aspen |
| Bryan Gustafson | Ascent Geomatics Solutions |