Combining estimates of low-flow characteristics of streams in Massachusetts and Rhode Island
Journal of Research of the U.S. Geological Survey
By: Gary D. Tasker
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Abstract
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.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Combining estimates of low-flow characteristics of streams in Massachusetts and Rhode Island |
| Series title | Journal of Research of the U.S. Geological Survey |
| Volume | 3 |
| Issue | 1 |
| Year Published | 1975 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Description | 6 p. |
| First page | 107 |
| Last page | 112 |
| Country | United States |
| State | Massachusetts, Rhode Island |