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Basemap
Satellite
Streets
Topo
Dark
⤢ Tilt / 3D view
Flood depth (cm)
0
Gages — rising-limb NSE
Layers
●
Streamgages
◆
High-water marks
Image chips
Flood opacity
82%
▶ play the flood · click a ● gage for its hydrograph · ◆ high-water mark for obs-vs-sim level · drag to pan
⚡ Frames are spatially & temporally downsampled for smooth, uninterrupted playback — full-resolution data on
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0.5×
1×
2×
4×
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Simulated depth-rise
Observed stage-rise
hit
miss (labeled flood, model dry)
false alarm
observed HWM
simulated water level
marker |Δ|:
≤0.2 m
0.2–0.5
0.5–1
>1 m
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