Why watershed boundaries follow ridges, and how water moves from hillslopes to streams, groundwater, and floods
5 sections · 10 lessons
Define watershed boundaries by drainage divides, then read contour lines to locate ridges, valleys, and flow direction on a landscape.
2 lessonsIdentify main divides and sub-divides, and trace how small catchments fit inside larger basins.
1 lessonTrace rainfall into overland flow, infiltration, aquifers, baseflow, and stream networks, then relate channel patterns to terrain and geology.
3 lessonsConnect evaporation, condensation, precipitation, runoff, and infiltration to hydrographs, then examine how land cover, soil, storm intensity, and snowmelt change flow timing and peaks.
2 lessonsEvaluate how dams, urban drainage, canals, and groundwater pumping alter drainage, then integrate watershed structure and water-cycle processes to think about floods, droughts, and uncertainty.
2 lessonsEvery lesson in order.
10 lessons
A watershed is not defined by the river alone, but by the landscape that sends water to it through drainage divides, slopes, and channels. This course builds a college-level understanding of how topography, runoff, infiltration, groundwater, and stream networks shape drainage systems, then connects those patterns to storms, snowmelt, and human changes to flow. By the end, you can read a landscape, place a watershed boundary, and explain how water moves through it under different conditions.
This course covers watershed boundaries, contour-line reading, drainage divides, nested basins, surface runoff, infiltration, groundwater, baseflow, and stream network structure. It also covers the watershed water cycle, hydrographs, storm and snowmelt response, human alteration of drainage, and the limits of flood and drought prediction.
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Something to operate in every section.
Three findings from decades of learning research shaped how every Fenzo lesson is built.
Average pass rate · Freeman et al., PNAS 2014
What the science says
Students in lecture-only classes are 1.5× more likely to fail.
How Fenzo does it
Every Fenzo lesson is interactive. No passive reading or watching, ever.
You work through itAI does it for you
Skill retention over time · with vs. without practice
What the science says
Offloading thinking to AI erodes the very skills you’re trying to build.
How Fenzo does it
Fenzo makes you do the thinking — guided, but never done for you.
Retrieval practiceRe-reading
Long-term recall · retrieval vs. re-reading
What the science says
Recalling information beats re-reading it for building durable understanding.
How Fenzo does it
Lessons weave in quizzes and recall prompts, so it sticks.