- Environmental and Water Resources Institute (U.S.) (3)
- American Society of Civil Engineers (2)
- American Academy of Water Resources Engineers (1)
- EWRI Congress and History Symposium (1)
- EWRI Education and Research Council (1)
- EWRI National Historu and heritage Committee (1)
- Frevert, Donald K. (1)
- Hayes, Donald F. (1)
- Potter, Kenneth W. (1)
- Rogers, Jerry R. (1)
- Sehlke, Gerald (1)
- Stevens, David King (1)
- Watershed Management Conference (1)
- World Water & Environmental Resources Congress (1)