Lead-rich sediments, Coeur d'Alene River valley, Idaho; Area, volume, tonnage, and lead content: River reach data (by segment)

Metadata Updated: November 12, 2020

This metadata file (pbrchseg.met) describes three shape files used. Shape file rivreach.shp contains the upstream and downstream boundaries of seven reaches of the river. Natural features define river-reach boundaries at the confluence of the North and South forks of the Coeur d'Alene (CdA) River, the transition from a gravel- to a sand- bottomed channel, the mouth of the river, and the base of the delta front. Other river-reach boundaries are at midpoints between river-channel drill transects. River-reach boundaries provide end limits for Estimation Units, for which thickness, volume, tonnage, and lead content of Pb-rich sediment were estimated. Shape file segments.shp contains up- and down-valley boundaries of 3 sections of the CdA River valley (upper, middle, and lower), each subdivided into three segments (a, b, and c). We defined these valley sections and segments to facilitate definition and description of along-valley differences in the character of deposits of metal- enriched sediment. These boundaries also define east- and west-end limits of Estimation Units, for which thickness, volume, tonnage, and lead content of Pb-rich sediment were estimated. Shape file Pb1000.shp outlines the area within which samples of surface sediment contain at least 1,000 parts per million (ppm). This outline is the 1,000 ppm Pb contour, which defines the geochemical limit (or cutoff concentration for Pb) of Estimation Units, for which thickness, volume, tonnage, and lead content of Pb-rich floodplain sediment were estimated.

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License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Date February 5, 2016
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) January 1, 2001 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from DOI Open Data

Additional Metadata

Resource Type Dataset
Metadata Date February 5, 2016
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) January 1, 2001 (publication)
Responsible Party U.S. Geological Survey (Point of Contact)
Contact Email
Guid
Access Constraints Use Constraints: Any hardcopies utilizing these data sets shall clearly indicate their source. If the users have modified the data in any way they are obligated to describe the type of modifications they have performed. User specifically agrees not to misrepresent these data sets, nor to imply that changes they made were approved by the U.S. Geological Survey., Access Constraints: none
Bbox East Long -116.2540
Bbox North Lat 47.5927
Bbox South Lat 47.4399
Bbox West Long -116.8170
Coupled Resource
Frequency Of Update notPlanned
Licence The U.S. Geological Survey (USGS) provides this data "as is". The USGS makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. The USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although this data has been processed successfully on computers at the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of this data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall the USGS have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by the USGS.
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 1999-01-01
Temporal Extent End 2001-01-01

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