Ochoco Irrigation District Pump Stations
Originally planned as a two-station project, budget constraints required a revised approach. As the selected best-value contractor, TNW partnered closely with the owner and design team to deliver a cost-effective solution while preserving future expansion. Through value engineering and a collaborative, CM/GC-style approach, TNW helped advance the first pump station while the owner secured funding for the second.
Pump Station 1: TNW led demolition of an existing facility and construction of a new pump station featuring 11 vertical turbine pumps (ten 200-HP and one 100-HP). The scope included installation of 500 linear feet of 78-inch HDPE supply pipe, a 96-inch HDPE header, and a steel discharge header ranging from 54 to 78 inches, supported by 460 cubic yards of concrete. The work required complex excavation, dewatering, and precise execution to meet schedule demands and ensure uninterrupted service for the 2024 irrigation season.
Pump Station 2: TNW demolished four existing pumps and constructed a new pump station featuring eight 200-HP vertical turbine pumps and one 25-HP vertical turbine pump, while integrating two existing 125-HP pumps into the upgraded controls system. The project included installation of steel discharge piping ranging from 6 to 66 inches, 1,780 linear feet of 66-inch profile wall HDPE discharge pipe, extensive open-cut excavation, and continuous operation of five dewatering wells throughout construction.
Location:
Prineville, Oregon
Owner:
Ochoco Irrigation District
YEAR COMPLETED:
2026
AWARDS:
- DJC Top Project Award