Tag Archives: ecohydrology

How wet is the unsaturated zone?

Posted on March 12, 2020 by Anne Jefferson

How does moisture content and water potential vary as you go down in the unsaturated zone? And what is the vadose zone, anyway? Continue reading →

Categories: by Anne, hydrology, teaching

Measuring evapotranspiration components

Posted on March 12, 2020 by Anne Jefferson

Evapotranspiration is often said to be the most difficult water balance component to directly measure. When water goes from liquid to vapor, you can’t exactly catch it in a bucket or measure flow in a channel. In my Watershed Hydrology … Continue reading →

Categories: by Anne, hydrology, teaching

Measuring actual evapotranspiration with weighing lysimeters

Posted on March 12, 2020 by Anne Jefferson

Weighing lysimeters are one of the very best ways of measuring the actual evapotranspiration from a small area of land, because they use mass balance (i.e., changing weight) to give us the combined total of plant transpiration, soil evaporation, and interception losses over time. Continue reading →

Categories: by Anne, hydrology, teaching

Conifers capture the snow, but do they intercept it?

Posted on December 27, 2017 by Anne Jefferson

If you’ve walked through the forest on a rainy day and noticed that it’s drier under the trees, you’ve experienced interception. In hydrology, interception is when water gets hung up on vegetative leaves, needles, or branches and never makes it … Continue reading →

Categories: by Anne, hydrology, ice and glaciers, photos