Follum Hydrologic Solutions, LLC

Follum Hydrologic Solutions, LLC, a for-profit limited liability company based in Casper, Wyoming, develops flood mapping, flood forecasting, and hydrologic modeling software and research capabilities for the U.S. Army Corps of Engineers Engineer Research and Development Center as a prime contractor, competing in full-and-open procurements with no set-aside designations.

The vendor operates exclusively as a prime contractor on research and development contracts and cooperative agreements. Six firm fixed-price definitive contracts and one cooperative agreement spanning 2022 through 2026 account for all $1.2 million in recent combined potential value. Work centers on hydrologic engineering, flood inundation mapping, bathymetric estimation for hydraulic models, and compound flooding simulation. Representative contracts include a $374,850 multi-year award under BAA-22-0031 for multi-model flood mapping to support continental-scale forecasting frameworks (August 2023 through August 2025), a $299,950 award under BAA-22-0033 for topobathymetric estimation for two-dimensional hydraulic models (August 2023 through August 2025), and a $303,100 award under BAA 25-0025 for development of a Gap Analysis Tool (January 2026 through January 2027). A $64,925 contract delivered FLOODSPREADERPY, a Python-based flood inundation mapping capability, and a $85,000 award funded ensemble bathymetric estimation of streams and rivers for austere environments. A cooperative agreement with the Army Corps of Engineers Civil Works for $297,500 supported an Inland Hazard System Framework to assist in simulation of compound flooding (September 2022 through September 2023).

Customer concentration is complete: the Engineer Research and Development Center accounts for all six contract awards ($1.2 million combined potential value), and the Corps of Engineers Civil Works manages the single grant award. The vendor has no subcontract footprint and does not sit on parent vehicles, GWACs, or agency-wide IDIQs. Activity shows two awards in 2022, four in 2023, and one in 2026, with no awards recorded in 2024 and 2025. Within the next twenty-four months, two awards with combined potential value of $678 thousand face ultimate completion and recompete exposure. Work is performed in Casper, Wyoming under NAICS 541715 (Research and Development in the Physical, Engineering, and Life Sciences) and PSC codes aligned with water resources and natural resources R&D services.

Our focus is on providing innovative and state-of-the-art solutions to hydrologic and geospatial problems.