JE Fuller/Hydrology & Geomorphology, Inc.
The deepest arid-lands and alluvial-fan flood specialist in the Southwest, and the only firm found with offices spanning Phoenix, Tucson, Flagstaff, Prescott and New Mexico. That matters because this region's hazard is flash flooding and alluvial fans, not riverine flooding, and the analysis is genuinely different.
Who runs it
- Jonathan D. Elslager ✓ PE, CFM - Vice President, Tucson
- Rob Lyons ✓ PE, CFM - Chief Operating Officer
- Mike Kellogg ✓ PG, CFM - President and Chief Executive Officer
Credentials & verification
- CFM (Certified Floodplain Manager)
- Five named CFM staff, each appearing in independent government records
- Years in business
- Since 1995
Services
Service area
Phoenix · Tucson · Flagstaff · Prescott · Maricopa County · Pima County · Silver City NM · Dona Ana County NM
Our verification notes
Best-evidenced provider in the region: five separate named PE and CFM or PG and CFM staff appear in independent government records from Marana, Flagstaff, Yuma County and Central Arizona district boards. No general email is published; contact by office phone. The founder does not appear on the current leadership roster - do not assume he is still involved.
Sources checked
- https://public.destinyhosted.com/marandocs/2025/CCREG/20251007_3138/3136_10-07-2025%20Regular%20Council%20Meeting%20Agenda%20Packet.pdf
- https://public.destinyhosted.com/flagsdocs/2026/CCMTG/20260707_4713/10219_Cooperative-Purchase-Contract-with-JE-Fuller-for-Lake-Mary-Water-Monitoring.pdf
- https://public.destinyhosted.com/yumacdocs/2025/BOSREG/20250707_1638/13779_Proposal_-_JE_Fuller_04-28-25.pdf
- https://www.mohave.gov/media/emohl1ij/frmp.pdf
Last verified 2026-08-13. This is an independent listing, not an endorsement, and we are not affiliated with JE Fuller/Hydrology & Geomorphology, Inc.. Confirm the current license, insurance and references directly before signing any contract.
← Flood risk & providers in Southwest — Monsoon Flash-Flood Country (Arizona & New Mexico)