Water Resources of New York

Duration Graphs and 30-Day Moving Average Daily Flow Graphs

PROVISIONAL DATA SUBJECT TO REVISION

Duration graphs and 30-day moving average daily flow graphs characterize the state of the hydrology of a stream with respect to time. To quantify the state of the hydrology for the current year, the current daily mean flows and current 30-day moving average flows are compared to selected exceedance flows computed for each day of the year over the history of the gaging station. In addition, 7-day minimum flow with a recurrence interval of 10 years (7Q10), and the average flow are shown on the duration graphs.

Explanation of Duration Graphs and 30-Day Moving Average Daily Flow Graphs

Mean Daily Flow and Duration Graphs for Selected Index Stations in New York

Mean Daily Flow and 30-Day Moving Average Daily Flow Graphs for Selected Index Stations in New York

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U.S. Department of the Interior, U.S. Geological Survey Maintainer: New York District URL: http://ny.water.usgs.gov/projects/duration/duration.plots/index.html Last update: 11:32:39 Tuesday 08 October 2002 Privacy Statement || Disclaimer