Groundwater5 min read
Gravity can weigh a region’s water without counting its wells
GRACE sees mass changes that cameras cannot. Groundwater interpretation still needs storage accounting, reference periods, and evidence from other instruments.
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beavers5 min read
Beaver Dams Change the Question About Water
Beaver benefits become clearer when we distinguish storm peaks, subsurface chemistry, sediment stores, and catchment history.
Rivers5 min read
A river gauge measures height before it measures flow
A streamflow graph depends on field measurements and a changing relationship between height and discharge. Floods and ice show why that relationship needs care.