Fluvial sediment data for Iowa—Suspended-sediment concentrations, loads and sizes; bed-material sizes; and reservoir siltation

Joel R. Schuetz; Wilbur J. Matthes

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Fluvial sediment data for Iowa—Suspended-sediment concentrations, loads and sizes; bed-material sizes; and reservoir siltation

Joel R. Schuetz·Wilbur J. Matthes

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Abstract

This report is a compilation of the fluvial sediment data collected and published by the U.S. Geological Survey and other Federal agencies for the State of Iowa. The compilation includes daily extremes, monthly summaries, particle-size analyses of suspended-sediment, particle-size analyses of bed materials at some daily suspended-sediment stations, suspended-sediment concentrations and loads for samples collected at periodic and miscellaneous sites, and reservoir sedimentation studies on streams.

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Joel R. Schuetz, Wilbur J. Matthes. 1977. Fluvial sediment data for Iowa—Suspended-sediment concentrations, loads and sizes; bed-material sizes; and reservoir siltation. https://pubs.usgs.gov/publication/70276511

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USGS1994

Suspended sediment and stream discharge in Bloody Run and Sny Magill watershed, water year 1992

Hydrologic data were collected in the Bloody Run and Sny Magill watersheds in Clayton County, Iowa during the 1992 Water Year (October 1, 1991 to September 30, 1992) to provide data on suspended sediment and stream discharge from these watersheds. Suspended-sediment samples were collected daily during normal flow and several times during rainstorms. Stream stage was recorded continuously and stream-discharge measurements were made monthly to develop a stage-discharge relation. Data on drainage-basin morphology and precipitation were quantified to help understand the variability in sediment and stream discharge. The total suspended-sediment discharge for Water Year 1992 was 2,720 tons at site BR1 on Bloody Run and 1,940 tons at site SN1 on Sny Magill Creek The daily median suspended-sediment discharge was 1.1 tons at both sites BR1 and SN1. The maximum daily mean stream discharge (205 cubic feet per second) at site BR1 on Bloody Run occurred on November 1, 1991. The median daily discharge at BR1 for the 1992 Water year was 24 cubic feet per second or 0.70 cubic feet per second per square mile (ft 3 /s/mi 2 ). The maximum daily mean stream discharge at site SN1 on Sny Magill Creek was 90 cubic feet per second which occurred on April 20, 1992. The median daily discharge at site SN1 for the 1992 Water Year was 15 cubic feet per second or 0.54 ft 3 /s/mi 2 .

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