Atmospheric concentrations of the powerful greenhouse gas nitrous oxide (N 2 O) have
increased dramatically over the last 100 years, and part of these emissions come from …

The Pacific Northwest encompasses a range of hydrologic regimes that can be broadly
characterized as either coastal (where rain and rain on snow are dominant) or interior …

Biogeochemical reactions associated with stream nitrogen cycling, such as nitrification and
denitrification, can be strongly controlled by water and solute residence times in the …

Hyporheic exchange is the mixing of surface and shallow subsurface water through porous
sediment surrounding a river and is driven by spatial and temporal variations in channel …

We propose that the mechanisms driving hyporheic exchange vary systematically with
different channel morphologies and associated fluvial processes that occur in mountain …

Work over the last decade has documented methods for estimating fluxes between streams
and streambeds from time series of temperature at two depths in the streambed. We present …

Rivers are the great shapers of terrestrial landscapes. Very few points on Earth above sea
level do not lie within a drainage basin. Even points distant from the nearest channel are …

Streambed temperatures can be easily, accurately and inexpensively measured at many
locations. To characterize patterns of groundwater-stream water interaction with a high …

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 …

Stream‐tracer injections were used to examine the effect of channel morphology and
changing stream discharge on hyporheic exchange flows. Direct observations were made …