Grand Forks Quadrangle NURE HSSR Study

OFR 97-492: Grand Forks Quadrangle NURE HSSR Study

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National Geochemical Database—Reformatted Data from the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) Program

By Steven M. Smith
Version 1.40 (2006)

Brief History and Description of Data

[See History of NURE HSSR Program for a summary of the entire program.]

ORGDP: Grand Forks Quadrangle
A total of 201 stream-sediment and 585 ground-water samples was collected, under contract with the Oak Ridge Gaseous Diffusion Plant (ORGDP), from the Grand Forks quadrangle. Stream sediments were collected from the Minnesota and North Dakota portions of the quadrangle by BCI Geonetics in July-August of 1979. Ground waters were collected by the Minnesota Geological Survey in Minnesota (July-August 1979) and by BCI Geonetics in North Dakota (July-August 1979). These samples were analyzed by ORGDP for uranium and other elements and the analytical data were released as the Grand Forks Quadrangle NURE Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) study GJBX-169(81) report.

Summary Tables
The following is a list of sample types collected for the Grand Forks quadrangle study.

*Summary of Grand Forks quadrangle sample types.*
Sediment Sample Type	Number of Samples	Water Sample Type	Number of Samples
Wet Streams	78	Wells	585
Dry Streams	123
Total Sediments	201	Total Waters	585

These Grand Forks quadrangle samples were analyzed by one or more of the following methods:

Sediment Samples

OR1: Oak Ridge Fluorescence Spectroscopy Analysis of sediments for U.
OR2: Oak Ridge Neutron Activation Analysis of sediments for U.
OR7: Oak Ridge Emission Spectrochemical Analysis of sediments for Ag, Al, B, Ba, Be, Ca, Ce, Co, Cr, Cu, Fe, Hf, K, La, Li, Mg, Mn, Mo, Na, Nb, Ni, P, Pb, Sc, Sr, Th, Ti, V, Y, Zn, and Zr.
OR8: Oak Ridge Atomic Absorption Spectroscopy Analysis of sediments for As and Se.

Water Samples

OR9-FL: Oak Ridge Fluorescence Spectroscopy Analysis of waters for U.
OR9-MS: Oak Ridge Mass Spectrometry Analysis of waters for U.
OR13: Oak Ridge Emission Spectrochemical Analysis of waters for Ag, Al, B, Ba, Be, Ca, Ce, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, P, Sc, Si, Sr, Ti, V, Y, Zn, and Zr. (Note: Nb and Th may be included in this method.)
OR16: Oak Ridge Anion Optical Absorption (Technicon AutoAnalyzer) Analysis of waters for Cl and Sulfate.
OR17: Oak Ridge Atomic Absorption Spectroscopy Analysis of waters for As and Se.

Discussion of the Reformatting Process for Grand Forks Quadrangle

The Grand Forks quadrangle sediment and water data consist of reformatted records from the Grand Forks Quadrangle NURE HSSR study GJBX-169(81) report. The following problems were found and addressed during the comparison and reformatting stages for these data:

Sediment Records

One stream-sediment sample was collected at a latitude of exactly 47°N, the dividing line between the Grand Forks quadrangle and the Fargo quadrangle. The coordinates for this sample were changed slightly to values found in tables on microfiche within the Grand Forks Quadrangle NURE HSSR study GJBX-169(81) report. This slight change places the sample clearly in the Grand Forks quadrangle.

Water Records

Unlikely sample collection dates were found for two samples. These dates were removed from the SAMPDAT field. For each record, the original SAMPDAT value and the most likely correct value was added as a comment to the REFORMAT field.
One well-water sample record was missing most of the site descriptive data and had an unlikely value of -9.9 for water temperature (WTRTEMP). A comment in the REFORMAT field notes this problem and lists the original WTRTEMP value.

Download The Data

The NURE HSSR data are now available online in two databases: The sediment database (also includes data for soils and some rocks) at http://tin.er.usgs.gov/nure/sediment/ and the water database at http://tin.er.usgs.gov/nure/water/. From these two web sites, NURE HSSR data can be selected, examined, summarized, and downloaded by political boundaries (State and County), by quadrangle (1:250,000-scale, 1:100,000-scale, and 1:63,360-scale for Alaska or 1:24,000-scale for the Lower 48 States), and by hydrologic unit (drainage region, subregion, river basin, or sub-basin). Selected data can be downloaded as a dBase file, a shapefile, an HTML table, or ASCII text (tab- or comma-delimited).

Grand Forks Quadrangle Sediment Data - 201 records
Grand Forks Quadrangle Water Data - 585 records

Notes for Data Users

The water samples were reportedly collected in the field without any filtering or acidification. (See the SAMPTYP coding explanation in the On-Line Manual for USGS-Reformatted NURE HSSR Data Files for descriptions of different Sample Types). However, the samples were filtered later in the laboratory through a 0.45 micron membrane filter before analysis. Therefore, the samples were not true "untreated water" samples and the analytical data may not be directly comparable for other quadrangle water samples of the same SAMPTYP when collected by a different laboratory. Since this was the standard procedure for Oak Ridge, water data from other Oak Ridge quadrangles should be comparable.

Latitude-longitude coordinates were reported in the original data files, as decimal degrees, to only 3 decimal places. Therefore, the precision of these coordinates is limited to +/- 0.001 degrees or +/- 3.6 seconds. This translates to a minimum precision of +/- 365 feet (111 m) for latitude values and between +/- 259 feet (79 m) to +/- 235 feet (72 m) for longitude values (calculated at latitudes of 45° and 50°N, respectively.) Latitude-longitude values are reported to the nearest second on field records on microfiche accompanying the GJBX-169(81) report.

Other NURE Geochemical Data for the Grand Forks Quadrangle

None found.

Grand Forks Quadrangle NURE Bibliography

Uranium Resource Evaluation Project, 1981, Hydrogeochemical and stream sediment reconnaissance basic data for Grand Forks NTMS quadrangle, North Dakota; Minnesota: Union Carbide Corporation, Nuclear Division, Oak Ridge Gaseous Diffusion Plant, Oak Ridge, Tenn., K/UR-148, U.S. Department of Energy, Grand Junction, Colo., GJBX-169(81), 135 p.

Links Within Open-File Report 97-492

Back to Minnesota NURE data
Back to North Dakota NURE data
Frequently Asked Questions Concerning NURE HSSR Data
Home Page: USGS National Geochemical Database - NURE HSSR data

Page written by Steven M. Smith (smsmith@usgs.gov)
Version 1.10: July 29, 1999
Version 1.20: August 07, 2000
Version 1.30: September 11, 2001
Version 1.41: February 23, 2006

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U.S. Department of the Interior \| U.S. Geological Survey URL: https://pubsdata.usgs.gov/pubs/of/1997/ofr-97-0492/quad/q_grdfrk.htm Questions or Assistance: USGS Web Contact Page Last Modified: Wed Dec 7 16:12 EDT 2016

National Geochemical Database—Reformatted Data from the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) Program By Steven M. Smith Version 1.40 (2006)