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All rivers with average discharge more than 15,000 cubic feet per second are listed. Estimates are approximate, because data are variable with time period measured and also because many rivers lack a gauging station near their point of outflow.
Near the outlet structure of Bull Run Lake, a USGS water-stage recorder at RM 21.9 (RK 46.8) has collected data on lake levels since 1992. The maximum lake content between then and 2009 was 48,340 acre-feet (59,630,000 m 3 ) on February 9, 1996, and the minimum was 31,080 acre-feet (38,340,000 m 3 ) on October 29, 1992. [ 4 ]
In fiscal year 2008, the USGS provided 35% of the funding for everyday operation and maintenance of gauges. [8] Additionally, USGS uses hydrographs to study streamflow in rivers. A hydrograph is a chart showing, most often, river stage (height of the water above an arbitrary altitude) and streamflow (amount of water, usually in cubic feet per ...
The John Day River is a tributary of the Columbia River, approximately 284 miles (457 km) long, in northeastern Oregon in the United States. It is known as the Mah-Hah River by the Cayuse people. Undammed along its entire length, the river is the fourth longest free-flowing river in the contiguous United States.
Within the USGS, the Water Resources Division carries the responsibility for monitoring water resources. To establish a stream gauge, USGS personnel first choose a site on a stream where the geometry is relatively stable and there is a suitable location to make discrete direct measurements of streamflow using specialized equipment.
Georeferenced map images are available from the USGS as digital raster graphics (DRGs) in addition to digital data sets based on USGS maps, notably digital line graphs (DLGs) and digital elevation models (DEMs). In 2015, the USGS unveiled the topoView website, a new way to view their entire digitized collection of over 178,000 maps from 1884 to ...
The average flow of the creek at this station in 2008, the only full calendar year for which data was available in 2010, was 202 cubic feet per second (5.7 m 3 /s). [5] The maximum flow recorded there was 1,880 cubic feet per second (53 m 3 /s) on January 11, 2008, [ 9 ] and the minimum flow was 6.4 cubic feet per second (0.18 m 3 /s) on ...
Based on data collected from 1962 to 1987 and from 2002 to 2013, the average discharge of Thomas Creek at the stream gauge near Scio was 487 cubic feet per second (13.8 m 3 /s). During those years, the maximum discharge of 27,400 cubic feet per second (780 m 3 /s) occurred on December 22, 1964, and the minimum of 3.4 cubic feet per second (0. ...