USGS Streamflow Average Data

Puerto Rico Streamflow Status

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Interactive Maps: Current 7-Day 14-Day 28-Day

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Streamflow Category Definitions

Categories compare current or recent streamflow with the historical record for the same day, multi-day period, or calendar month.

All-time high: Highest observed streamflow in the historical record for that day, period, or calendar month.
Much above normal: Greater than the 90th percentile.
Above normal: 75th to 90th percentile.
Normal: 25th to 75th percentile.
Below normal: 10th to 25th percentile.
Much below normal: Below the 10th percentile.
All-time low: Lowest observed streamflow in the historical record for that day, period, or calendar month.
Not flowing: Streamflow is reported as zero.
Not ranked / unavailable: A historical ranking could not be determined from the available data.

Source: U.S. Geological Survey. River overlay: named USGS The National Map NHD streams/rivers. Multi-day historical thresholds calculated with HySWAP using Approved USGS Daily Values. Monthly historical climatology uses complete calendar months of Approved USGS Daily Values and at least 20 valid historical years; the selected target year is excluded from its own comparison. The selected monthly observation may include provisional USGS Daily Values so recently completed months can be used in operational reports.