Humboldt Bay, the largest estuarine ecosystem on California's North Coast, is a vital habitat for eelgrass beds, tidal marshes, and diverse marine and bird species. The bay is heavily influenced by tidal flows, freshwater inputs, and sediment transport, with adjacent low-lying areas facing significant flooding risks due to storm surges and sea-level rise. Real-time water level monitoring in Humboldt Bay provides critical data for understanding tidal dynamics, predicting flood events, and supporting coastal resilience and habitat conservation in this ecologically and economically important region.