Tag Archives: sediment

Wildfire extent and severity influences the streamwater chemistry, sediment and temperature of individual basins during five years following Colorado’s Hayman Fire

ABSTRACT The 2002 Hayman Fire was the largest fire in recent Colorado history. The extent of high severity combustion and its location in watersheds that deliver drinking water to metropolitan Denver focused public attention on the effects of wildfire on … Continue reading

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Trail Creek Sediment yield report

Abstract: Prepared for Douglas County, colorado, in March of 2006. Analysis of sediment run-off post- Hayman fire. Complete text available online here:   E&H_Trail Creek Sediment Yield Report   Engineering and Hydro Systems, March 2006

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Sediment Production and Delivery from Forest Roads and Off-Highway Vehicle Trails in the Upper South Platte River Watershed, Colorado.

Abstract (Pollution – Sediment, Erosion, Water Quality) Sediment is a principal cause of impairment to surface water quality.  Erosion is aparticularly important environmental issue in the Upper South Platte River (USPR)watershed of Colorado because it is the primary source of … Continue reading

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Denitrification as a Component of the Nitrogen Budget for a Large Plains River.

Abstract (Pollution – Sediments) Nitrogen dynamics of a plains reach of the South Platte River were studied over a 12-month cycle for the purpose of quantifying denitrification rates. The working hypothesis of the study was that denitrification would be of … Continue reading

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Streamflow Gain-and-Loss and Suspended-Sediment Characteristics of the South Platte River and Three Irrigation Canals Near Fort Morgan, Colorado.

Abstract (Water Management, Pollution – Sediment) A 2-year study during 1982-83 was made to document the streamflow gain-and-loss and suspended sediment characteristics of the South Platte River, Fort Morgan Canal, Upper Platte and Beaver Canal, and the Lower Platte and … Continue reading

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Flood Deposits, Bijou Creek, Colorado, June 1965.

Abstract (Pollution – Sediment, Flood Control) A study was made to determine the character of deposits of a major flood along Bijou Creek, Colorado. These deposits consist of sand that was laid down in mid-June, 1965 during rapid movement of … Continue reading

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Stratigraphic Evidence of Desertification in the West-Central Great Plains within the past 1000 yr.

Abstract (Geology, Pollution – Sediment) Stratigraphic and geomorphic relations, archeological data, and eight radiocarbon ages at five widely scattered localities in northeastern Colorado indicate that eolian sand was mobilized over broad areas within the past 1000 yr. The mobilization began … Continue reading

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Gravel Deposits of the South Platte River Valley North of Denver, Colorado: Part C: Description, Composition, and Origin of Clay Lenses in Gravel.

Abstract (Geology, Pollution – Sedimentation) Clay lenses in the Western Mobile Howe and Mann Lake gravel pits were investigated to determine their distribution, form, composition, and depositional environment, with the ultimate goal of predicting their distribution beneath the surface.  Clay … Continue reading

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Concentration, Distribution, and Comparison of Selected Trace Elements in Bed Sediment and Fish Tissue in the South Platte River Basin, USA, 1992-1993.

Abstract (Pollution, Sediment, Aquatic Life) During August–November 1992 and August 1993, bed sediment and fish liver were sampled in the South Platte River Basin and analyzed for 45 elements in bed sediment and 19 elements in fish liver. The results … Continue reading

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Pleistocene Incision Rates in the Western United States Calibrated Using Lava Creek B Tephra.

Abstract The Lava Creek B ash bed, erupted from the Yellowstone caldera ca. 0.64 Ma, provides a datum for measuring long-term fluvial incision west of the Mississippi River. The ash is widely preserved due to its substantial volume, broad initial … Continue reading

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