County staff to pursue dam‑flow measurement equipment after state requirement; cost estimated under $6,300

County staff reported on March 3 that state requirements will require the county to measure flow at a local dam on a recurring basis and that the recommended measurement instrument would cost just under $6,300. Staff said the first measurement must be taken in about 30 days and that quarterly monitoring would be required.

Staff described two possible approaches: 1) purchase the recommended portable flow‑measurement equipment (delivery in a couple of weeks was possible), or 2) pursue a permanent downstream weir installation to provide recurring, low‑maintenance flow readings. An engineer had previously recommended a fixed weir that would allow monthly readings and avoid recurring equipment hires, though that alternative may require a separate approval from the state if it alters the measurement method outlined in the state directive.

Commissioners asked follow‑up questions about calibration and recertification requirements, whether the instrument is permanently installed or portable, and the logistical challenge of lowering the structure’s water level (staff said pumping the pit out would be required to access the discharge tube and could take about a day). Staff said the equipment recommendation came from the county engineer and that they would invite the engineer and Isaac (county staff referenced by name) to a meeting to clarify the exact state requirement and to explain calibration and warranty questions.

Next steps: staff will coordinate with Isaac and the engineer to clarify the state’s required measurement procedure, to determine calibration/recertification costs and schedules, and to return with a purchase recommendation and timeline.