Using a fluctuating tracer to estimate hyporheic exchange in restored and unrestored reaches of the Truckee River, Nevada, USA.

The article presents a study approximating the hyporheic activity of Truckee River in Nevada via its restored and unrestored reaches. It notes the observed increase of surface-subsurface interaction which is believed to have caused by the rocky riffles induction and the ascension of the channel bed elevations. The tracer being used in the determination of the hyporheic exchange is the fluctuating chloride concentration signal and the model known as OTIS is also utilized as model for solute transport. Results from the study indicates the great average of the transient storage zone cross-sectional area and the smaller exchange coefficient.