Arizona State Land Department, Arizona Land Resources Information System
Publication Date
1993-01-01T:00:00:00
Geospatial Data Presentation Form
mapDigital
Abstract
Data layer depicts major rivers with main stem. Converted in the fall of 1988 from USGS 1:100,000 scale DLG data to ARC format. Since then, multiple and extensive corrections have taken place. Early on, several Arizona agencies were part of rectification including: attributes, features, edgematching and the re-tiling of the data into the USGS Hydrologic Unit Code (HUC) library tiling format. The Environmental Protection Agency (EPA) has since added critical attributes to the Arizona database, including: A nationally recognized management link code (the Reach Id), names, and hydrologic information. Arizona has enhanced the theme further by adding ergonomic Descriptive Attribute Codes, Cartographic Order, more Names, and intense Quality Assurance Controls.
Purpose
The data are created to serve as base information for use in GIS systems for a variety of planning and analysis purposes.These data do not represent a legal record. This datasets is made available to interested persons through the University of Arizona's instance of Open Geoportal. It has been provided to assist educators, students, researchers, and policy makers in mapping and/or analysis applications.
Temporal Extent
Time Period
Begin
1993-01-01T00:00:00
End
1993-12-31T00:00:00
Bounding Box
West
-115.027529
East
-108.929628
North
37.03081
South
31.278422
ISO Topic Category
environment
inlandWaters
Theme Keyword
environment
inlandWater
Theme Keyword Thesaurus
ISO 19115 Topic Category
Theme Keyword
perennial waters
hydrography
streams
Theme Keyword Thesaurus
Place Keyword
San Pedro River
Verde River
Zuni River
Santa Cruz River
Colorado River
Black River
Agua Fria River
Gila River
State of Arizona
Salt River
Place Keyword Thesaurus
GNIS
Place Keyword
Arizona
USA
AZ
Place Keyword Thesaurus
Status
completed
Maintenance and Update Frequency
notPlanned
Language
eng
Point of Contact
Contact
GIS Data Transfer Specialist
Delivery Point
1616 West Adams
City
Phoenix
Administrative Area
Arizona
Postal Code
85007
Country
US
Email
gisdata@lnd.state.az.us
Phone
(602) 542-4094
Spatial Reference Information
Reference System Identifier
Code
NAD83 / UTM zone 12N (EPSG:26912)
Code Space
EPSG
Version
7.9
Data Quality Information
Quantitative Attribute Accuracy Report
Absolute External Positional Accuracy
Absolute External Positional Accuracy
Lineage
Process Step
Description
Digitize paper maps to create data. Perennial waters were described by many specialists in the study of hydrology on quad maps and digitized. There was no ground-truthing done to verify accuracy.
Process Date
1993-01-01T00:00:00
Process Step
Description
Dataset renamed from Main Stem.shp to Arizona_MajorRivers_1993.shp by Ben Hickson with the University of Arizona Library. Metadata fields corresponding the Open Geoportal Working Group Best Practices Guide (http://opengeoportal.org/working-groups/metadata/) were also updated.
Process Date
Source
Title
Ephemeral and Perennial Streams in Arizona
Publication Date
Originator
AZHYDRO GIS cover from ALRIS
Publisher
Arizona State Land Department, Arizona Land Resources Information System
Description
Converted in the fall of 1988 from USGS 1:100,000 scale DLG data to ARC format. Since then, multiple and extensive corrections have taken place. Early on, several Arizona agencies were part of rectification including: attributes, features, edgematching and the re-tiling of the data into the USGS Hydrologic Unit Code (HUC) library tiling format. The Environmental Protection Agency (EPA) has since added critical attributes to the Arizona database, including: A nationally recognized management link code (the Reach Id), names, and hydrologic information. Arizona has enhanced the theme further by adding ergonomic Descriptive Attribute Codes, Cartographic Order, more Names, and intense Quality Assurance Controls.
