Hydraulics Annex One (Research Park)

An exterior view of IIHR's Oakdale Annex One.

Hydraulics Annex One (HA1) has provided unobstructed open space for very large models since 1979. Amenities include overhead doors at each end of the building and a sump with a capacity exceeding 50,000 gallons and up to 150 Hp of pumping capability. HOA1 often houses fish passage model studies.