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Gary D. Tasker

Publications and source records attributed to Gary D. Tasker.

62 records · Page 4Linked to original sources
USGS1975

Combining estimates of low-flow characteristics of streams in Massachusetts and Rhode Island

The number of base-flow measurements needed to meet specified accuracy goals for estimating low-flow characteristics at ungaged sites can be reduced by combining an estimate based on a regression of base-flow measurements on discharges from a nearby continuous long-term gaging station with an estimate based on a regional relationship developed from regressing the low-flow characteristics on basin characteristics. The estimates should be combined by weighting each inversely with its variance from the true value. Empirically estimated values of variance of the estimated 7- day, 10-year low flow from its true value indicate that more than six or eight base-flow measurements add" little to the confidence with which such an estimate is made.

Massachusetts, Rhode Island↗
USGS1974

Progress report on flood magnitude and frequency of Vermont streams

A technique is presented for estimating the magnitude and frequency of floods on streams in Vermont with drainage areas between 0.27 and 1,040 square miles. Multiple-regression techniques are used to define the relation between flood peaks, collected at a network of gaging stations maintained by the U.S. Geological Survey, and a set of basin characteristics. Results show that flood peaks may be estimated from knowledge of the basin's drainage area, average seasonal snowfall, area of lakes and ponds, and maximum 24-hour rainfall having a recurrence interval of 2 years. The relations are presented graphically for user convenience.

Vermont↗
USGS1973

Method for estimating the diversion potential of streams in eastern Massachusetts and southern Rhode Island

A simple method is proposed for estimating the probable magnitude and frequency of streamflow that is in excess of predetermined minimum streamflows required downstream in eastern Massachusetts and southern Rhode Island. Regional curves relate these annual volumes of streamflow excess to the average annual discharge and the median 7-day annual minimum flow of the site. Use of the curves is illustrated by a hypothetical example.

Massachusetts, Rhode Island↗