Grand Lake siteid=141 · CO
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Water level & flow 2023-08-03 .. 2026-08-13 · SWOT depth track + USGS NWIS gauges · one linked timeline
current depth
57 ft
drawdown
14.8 ft
below full pool
water level (depth)
79%
57 of
72 ft deep
water stored (volume)
53%
est. from bathymetry
measured
Aug 13
swot_lakesp
pipeline refresh
2026-09-18 01:56 UTC
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elevation trend: robust smoothing + outlier removal · raw value on hover
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Inflow / outflow USGS NWIS daily discharge · same timeline as above
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