Knowing where and when rivers flow is paramount to managing freshwater ecosystems. Yet
stream gauging stations are distributed sparsely across rivers globally and may not capture …

Excess nitrogen (N) impairs inland water quality and creates hypoxia in coastal ecosystems.
Agriculture is the primary source of N; agricultural management and hydrology together …

Rivers are important ecosystems under continuous anthropogenic stresses. The hyporheic
zone is a ubiquitous, reactive interface between the main channel and its surrounding …

Traditional characterization of hyporheic processes relies upon modelling observed in‐stream
and subsurface breakthrough curves to estimate hyporheic zone size and infer exchange …

Non-perennial streams are widespread, critical to ecosystems and society, and the subject of
ongoing policy debate. Prior large-scale research on stream intermittency has been based …

Streamflow observations can be used to understand, predict, and contextualize hydrologic,
ecological, and biogeochemical processes and conditions in streams. Stream gages are …

Over half of global rivers and streams lack perennial flow, and understanding the
distribution and drivers of their flow regimes is critical for understanding their hydrologic, …

In this chapter, the authors provide a comprehensive analysis and synthesis of the interactions
between important drivers and controls of hyporheic exchange and biogeochemical …

Headwater stream networks expand and contract in response to changes in stream
discharge. The changes in the extent of the stream network are also controlled by geologic or …

Groundwater–surface-water (GW-SW) interactions in streams are difficult to quantify
because of heterogeneity in hydraulic and reactive processes across a range of spatial and …