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D.R. Harden

Publications and source records attributed to D.R. Harden.

2 recordsLinked to original sources

Graphic and tabular summaries of water and suspended-sediment discharge for two periods of synoptic storm sampling during 1975 in the Mill Creek drainage basin, Del Norte County, California

This report contains graphs and tables summarizing basic data collected at five stream monitoring sites in the Mill Creek drainage basin during two major storms in 1975. One of these storms produced the maximum stream discharge for the year on Mill Creek. Rainfall data are presented for four locations within or near the Mill Creek basin. The antecedent precipitation index at the start of each storm is shown for the Crescent City 7 ENE rain gage. The report also includes photographs and two tables that indicate the location and physical properties of those subdivisions of the Mill Creek basin that are upstream from sites selected for synoptic stream monitoring. The physical parameters used to describe this basin and the techniques used to measure those parameters are described in Iwatsubo and others (1975).

California↗

Redwood National Park studies; data release number 2, Redwood Creek, Humboldt County, and Mill Creek, Del Norte County, California, April 11, 1974-September 30, 1975

An interdisciplinary study has been undertaken in Redwood National Park, Calif., to describe parts of the ecosystems and recent changes in the intensity of erosion and sedimentation, define processes that may alter the natural ecosystems, and assess the impact of recent road construction and timber harvest. This report is the second of a series that will present data collected in this study. Stream-discharge and water-quality data were collected at 53 sampling stations in the Redwood Creek and Mill Creek drainage basins. Measurements included the following variables: Stream stage and discharge; turbidity; sediment; onsite water-quality determinations of temperature, pH , total alkalinity, specific conductance, and dissolved-oxxygen concentration; chemical analyses of water samples for major dissolved solids, selected trace elements, nitrogen, phosphorus, and organic carbon; chemical analyses of bottom sediment for organic carbon and pesticides; bacteria; benthic invertebrates; fish; periphyton; phytoplankton; and seston. Additional data include changes in geometry at 10 stream-channel cross sections along Mill Creek and the distribution of erosional landforms in the Mill Creek drainage basin; quantity and chemical composition of rainwater; and the intragravel-streambed condition at selected stations in the Redwood Creek drainage basin. (Woodard-USGS)

Open-File Report↗