Below is a current list of registrants.
| Full Name | Company |
|---|---|
| Michael Grabczyk | Town of Parker |
| Doug Gossett | City of Longmont |
| Robby Glenn | City of Boulder |
| John Giordanengo | AloTerra Restoration Services |
| Kevin Gingery | City of Loveland |
| Penn Gildersleeve | Retired |
| Thomas Gilbert | City of Greeley Community Development |
| Paul Geiger | Summit County |
| Alysha Geiger | City of Thornton |
| Stuart Gardner | Colorado DOT |
| Felicia Garcia | SEMSWA |
| Michael Galuzzi | Merrick & Company |
| Elizabeth Gallo | Colorado School of Mines |
| Amy Gabor | Olsson |
| Kendra Gabbert | Felsburg Holt & Ullevig |
| Tom Fuentes | Michael Baker International |
| Laddie Fromelius | StormTrap |
| Ross Friend | Matrix Design Group |
| Lindsey Freytag | AECOM |
| Cameron Fowlkes | City of Longmont |
| Steve Forvilly | City & County of Denver Public Works |
| S. Justin Forman | City of Aspen |
| Amy Foreman | City & County of Denver |
| Michael Flynn | Wood |
| Brad Florentin | Muller Engineering Company |
| Andrew Fisher | City of Greeley |
| Evan Fischgrund | Advanced Drainage Systems |
| Brian Fischer | Enginuity Engineering Solutions |
| Laura Finch | Triton Environmental |
| William Fieselman | Miracorp |
| Terri Fead | Mile High Flood District |
| Craig Fairbaugh | Contech Engineered Solutions LLC |
| Nathan Ewert | Trihydro Corporation |
| Alex Ewers | 3 Rocks Engineering |
| Marlissa Essells | HDR |
| Tracy Emmanuel | Otak, Inc. |
| Danny Elsner | Dewberry |
| Mike Earnest | City of Aurora |
| Andrew Earles | Wright Water Engineers |
| Lucila Dunnington | Smith Environmental and Engineering |
| Jeffrey Dunn | City of Colorado Springs, Water Resources Engineering Division |
| Philip Drazek | Kiewit Infrastructure Engineers |
| Kevin Doyle | Michael Baker International |
| Keith Dougherty | City of Durango |
| Rick Dorris | City of Grand Junction |
| Robin Dornfest | Lithos Engineering |
| Charlie Dominguez | Gunnison County |
| Dan Dodson | Nilex, Inc |
| James Dickhoff | Town of Pagosa Springs |
| William deRosset | Ayres Associates |