John D. Horton
2015
Streams in Mauritania, West Africa
vector digital data
Denver, CO
U.S. Geological Survey
http://dx.doi.org/10.3133/ofr20131280Taylor, Cliff D., ed.2015Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (PRISM-II) phase VPDFs, Digital Maps, Excel tablesU.S. Geological Survey Open-File ReportOF 2013-1280Denver, ColoradoU.S. Geological Surveyhttp://pubs.usgs.gov/of/2013/1280/
Newly digitized lines representing streams in the Islamic Republic of Mauritania (IRM), Africa.
Created for the "Second Projet de Renforcement Institutionnel du Secteur Minier (PRISM II)" co-financed by the Government of Mauritania and the World Bank (Credit No. IDA-38100 MAU). This data was used as a basemap dataset in multiple published maps and reports related to the project. Stream locations are important for logistics related to mining production.
2013
None planned
-16.891135
-4.759907
27.306290
14.664660
None
stream
None
Africa
Mauritania
None
Data have been checked to ensure the accuracy of the data. If any errors are detected, please notify the originating office. The U.S. Geological Survey strongly recommends that careful attention be paid to the metadata file associated with these data. Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from these data. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcGIS and ERDAS Imagine formats, this metadata file may include some terminology specific to those software packages.
This digital database is not meant to be used or displayed at any scale larger than 1:1,000,000.
John Horton
U.S. Geological Survey
GIS Analyst
mailing and physical address
Denver Federal Center, PO Box 25046, MS-973
Denver
CO
80228
303-236-1921
jhorton@usgs.gov
John D. Horton
Microsoft Windows 7 Version 6.1 (Build 7600) ; ESRI ArcGIS 10.0.4.4000
The attribute accuracy of the line features depends on the accuracy of the National Geographic World Map from ESRI ArcGIS Online (http://services.arcgisonline.com/ArcGIS/rest/services/NatGeo_World_Map/MapServer); which was used to digitize the lines.
Topology was enforced on this dataset to check for and eliminate any overlaps or duplicate lines.
Complete
The horizontal positional accuracy of the line features depends on the accuracy of the National Geographic World Map from ESRI ArcGIS Online (http://services.arcgisonline.com/ArcGIS/rest/services/NatGeo_World_Map/MapServer)
The National Geographic World Map from ESRI ArcGIS Online (http://services.arcgisonline.com/ArcGIS/rest/services/NatGeo_World_Map/MapServer) was the basemap used for digitizing the streams.
2012
John Horton
U.S. Geological Survey
GIS Analyst
mailing and physical address
Denver Federal Center, PO Box 25046
MS 973
Denver
CO
80228
303-236-1921
jhorton@usgs.gov
Vector
String
2596
Transverse Mercator
0.9996
-11.0
0.0
0.0
0.0
coordinate pair
0.6096
0.6096
meters
WGS 1984
WGS_1984
6378137
298.257224
Attribute Table
Table containing attribute information associated with the data set.
Authors
FID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
SHAPE
Feature geometry.
ESRI
Coordinates defining the features.
Catégorie
Type of stream in French. Either permanent or intermittent.
Authors
User defined
Type
Type of stream in English. Either permanent or intermittent.
Authors
User defined
Length
Length of the polyline in meters.
ESRI
242.633725
220205.852735
meters
U.S. Geological Survey
mailing address
USGS Information Services
Denver
CO
80225-0046
Box 25286Denver Federal Center
1-888-ASK-USGS (1-888-275-8747)
http://ask.usgs.gov
Downloadable Data
This database, identified as OF 2013-1280, has been approved for release and publication by the U.S. Geological Survey. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the U.S. Government may be held liable for any damages resulting from its authorized or unauthorized use.
Although these data have been processed successfully on a computer System at the U.S. Geological Survey (USGS), no warranty, expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS shall not be held liable for improper or incorrect use of the data described and/or contained herein.
Although this information product, for the most part, is in the public domain, it also contains copyrighted material as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner.
Shapefilehttp://dx.doi.org/10.3133/ofr20131280http://pubs.usgs.gov/of/2013/1280/None
20150720
John Horton
U.S. Geological Survey
GIS Analyst
mailing and physical address
Denver Federal Center, PO Box 25046
MS 973
Denver
CO
80228
303-236-1921
jhorton@usgs.gov
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time