The WaterMark Stream Gauge Number 3 Plate is designed for use with stream gauges and staff gauge systems requiring a clearly visible “3” marker. Constructed from durable porcelain enameled iron, this replacement gauge plate delivers reliable long-term performance in outdoor water monitoring environments. The bold black number on a white background allows for quick and accurate water level identification in hydrology stations, reservoirs, canals, stormwater systems, lakes, and wastewater monitoring applications. Its durable porcelain enamel finish helps maintain visibility and readability in demanding field conditions. Ideal for professional environmental monitoring and water management installations, this number 3 gauge plate integrates seamlessly with compatible stream gauge and staff gauge systems.