From the USSD website:

Join USSD and colleagues in beautiful sunny San Diego at the Town and Country, for what will be the first face-to-face conference in two years!

The USSD Technical Program Committee is putting the finishing touches on an excellent program with over 100 technical sessions, two plenaries, a Legacy Lecture, and six workshops. Stay through the week and register for an outstanding field tour being planned for San Vicente Dam and Lake Murray on Friday.

New to the program is Women Who Give a Dam which showcases accomplishments of women in the industry, It includes a technical session followed by a luncheon with a keynote speaker.