Specifications include, but are not limited to: Review existing records and files for the gauging station, measuring bridge, access walkway, and general site layout. Limited documentation is available, and it will be provided by NHDES. This consists of PDF’s of historical diagrams, and plan viewAutoCad survey documentation.•Visit the site to observe existing conditions, which will include a dive inspection of the underwater elements of the flume structure, including assessment of the existing submerged support system for the Ultrasonic Velocity Meter (UVM) components.•Prepare an engineering memo with a comprehensive condition assessment of those elements discussed in Section 1., which will include a discussion of options available for the repair and/or replacement of the listed components, estimates of the cost of available options, and recommendations for repairs based on expected design life and cost-effectiveness.