Blue Liner Flows is a free iPhone application designed to provide easy access to river and stream data across the United States. Users can view essential metrics such as flow rates (CFS), temperature, turbidity, dissolved oxygen, pH levels, and gauge height for thousands of water bodies. The app features a user-friendly interface that allows for searching specific rivers, viewing statistics, and utilizing map functionalities. Users can save favorite locations and set up alerts to monitor changes in river measurements, ensuring they stay informed about water conditions.

In addition to its monitoring capabilities, Blue Liner Flows enhances user experience with home screen widgets for quick access to river data. It also offers weather forecasts and directions to various river locations. This application is particularly beneficial for outdoor enthusiasts engaged in activities like fishing, rafting, kayaking, and swimming, making it a versatile tool for anyone looking to enjoy river-related activities.