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ESTIMATING LOW-FLOW FREQUENCIES OF UNGAGED STREAMS IN NEW ENGLAND.

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Abstract

Equations to estimate low flows were developed using multiple-regression analysis with a sample of 48 river basins, which were selected from the U. S. Geological Survey's network of gaged river basins in Massachusetts, New Hampshire, Rhode Island, Vermont, and southwestern Maine. Low-flow characteristics are represented by the 7Q2 and 7Q10 (the annual minimum 7-day mean low flow at the 2- and 10-year recurrence intervals). These statistics for each of the 48 basins were determined from a low-flow frequency analysis of streamflow records for 1942-71, or from a graphical or mathematical relationship if the record did not cover this 30-year period. Estimators for the mean and variance of the 7-day low flows at the index and short-term sites were used for two stations where discharge measurements of base flow were available and for two sites where the graphical technique was unsatisfactory.

Suggested Citation

Wandle, S.W., 1987, ESTIMATING LOW-FLOW FREQUENCIES OF UNGAGED STREAMS IN NEW ENGLAND., Engineering Hydrology, Proceedings of the Symposium. Held Jointly with the ASCE National Conference., Williamsburg, VA, USA.

Publication type Conference Paper
Publication Subtype Conference Paper
Title ESTIMATING LOW-FLOW FREQUENCIES OF UNGAGED STREAMS IN NEW ENGLAND.
ISBN 0872626113
Year Published 1987
Language English
Publisher ASCE
Publisher location New York, NY, USA
First page 538
Conference Title Engineering Hydrology, Proceedings of the Symposium. Held Jointly with the ASCE National Conference.
Conference Location Williamsburg, VA, USA
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