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Joseph P. Nielsen

Publications and source records attributed to Joseph P. Nielsen.

5 recordsLinked to original sources
USGS2007

From the River to You: USGS Real-Time Streamflow Information...from the National Streamflow Information Program

This Fact Sheet is one in a series that highlights information or recent research findings from the USGS National Streamflow Information Program (NSIP). The investigations and scientific results reported in this series require a nationally consistent streamgaging network with stable long-term monitoring sites and a rigorous program of data, quality assurance, management, archiving, and synthesis. NSIP produces multipurpose, unbiased surface-water information that is readily accessible to all.

Fact Sheet↗
USGS2000

Streamflow Statistics for the Narraguagus River at Cherryfield, Maine

Streamflow data have been collected for the Narraguagus River from 1948 to the present (2000) at the U.S. Geological Survey (USGS) streamgaging station at Cherryfield, Maine. This report describes a study done by the USGS to determine streamflow statistics using the streamflow record at the Narraguagus River station for use in total water use management plans implemented by State and Federal agencies. Because the effect of changes in irrigation practices from 1993 to the present on streamflow in the Narraguagus basin is unknown and potentially significant, streamflow data after December 1992 were not used in the determination of the streamflow statistics. For the period 1948- 92, monthly median streamflows range from 93.0 ft3/s (August) to 1,000 ft3/s (April). The median streamflow for the selected period of record for all days (1948-92) is 302 ft3/s.

Open-File Report↗
USGS1999

Record Extension and Streamflow Statistics for the Pleasant River, Maine

Historical streamflow data for the Pleasant River are limited to 11 years (from 1980 to 1991) at the U.S. Geological Survey streamgaging station near Epping. Analysis of these data in conjunction with flow data from other nearby stations indicates that the 11 years of record for the Pleasant River may not be representative of longer-term conditions in the basin. A correlation between the historical streamflows from the Pleasant River station and at the nearby station on the Narraguagus River at Cherryfield provides a means of extending the record at the Pleasant River station, increasing the period of record on the Pleasant River from 11 to 51 years. When used to calculate new streamflow-duration statistics, the extended record shows significant differences from the original 11 years of record, particularly during the summer months. The August median streamflow, an important statistical measure for fisheries habitat, changed from 50 cubic feet per second prior to the record extension, to 35 cubic feet per second after the record extension.

Water-Resources Investigations Report↗