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However, users should beware that values calculated from the minimum required data maybe unreliable depending on the specific weather patterns in that timeframe. Gauges with three times the minimum required data (i.e. six years for 7Q2 and 30 years for 7Q10) will likely provide more reliable estimates. 7Q2 and 7Q10 estimates are available for the majority of stream reaches on the Wisconsin Hydrography Database estimated from USGS \u201cLow-Flow Characteristics of Streams\u2026\u201d USGS Water Resource Investigations, or WDNR calculations created using the USGS methods. 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