Low-flow Statistic Equations and Supplemental Data for the Plymouth-Carver Kingston-Duxbury Aquifer Area in Southeastern Massachusetts and Cape Cod

The U.S. Geological Survey (USGS), in cooperation with the Massachusetts Department of Conservation and Recreation, Office of Water Resources, developed regional regression equations for estimating selected low-flow statistics in the Plymouth-Carver Kingston-Duxbury aquifer area of southeastern Massachusetts and Cape Cod. This data release child item provides streamflow statistics and basin characteristics (potential explanatory variables) for groundwater contributing areas of 4 USGS streamgages with 14 water years or more of record, 3 discontinued USGS streamgages with 1 to 3 water years of record, and 11 USGS partial-record stations with at least 10 or more miscellaneous measurements. These data were used to develop regional regression equations for the 99-, 98-, 95-, 90-, 85-, 80-, 75-, 70-, 60-, and 50-percent flow durations. Information on Maintenance of Variance Extension, type 1 (MOVE.1) record extension analyses for estimated streamflow statistics at the 3 discontinued streamgages and 11 partial-record stations are provided. The Weighted-Multiple-Linear Regression (WREG) input and output files used to develop the final regional regression equations for Massachusetts are also provided. This child item also provides additional streamflow statistics for the: 40-, 30-, 25-, 20-, 15-, 10-, 5-, 2-, and 1-percent flow durations; monthly 90- and 50-percent flow durations; monthly median of the monthly means; harmonic mean; median of the annual 7-day low flow; and the 7-day, 2-year (7Q2), 7-day, 10-year (7Q10), 30-day, 2-year (30Q2), and 30-day, 10-year (30Q10) low-flow frequencies for the 18 sites (7 streamgages and 11 partial-record stations).

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  "010:12"
]

[
  "geospatial"
]