Originator: Spatial Analysis Unit, Carolina Population Center
Publication_Date: 2000
Title: 1:250,000-Scale Hydrography (PROFORS)
Geospatial_Data_Presentation_Form: vector digital data
Description:
Abstract:
Hydrography coverage for the northern Oriente region of Ecuador. The hydro network was digitized from a 1:250,000-scale topographic map.
Purpose:
The primary purpose of this data set is for cartographic representation in small-scale maps of the hydrographic network in the Oriente.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1993
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -78.000934
East_Bounding_Coordinate: -75.161179
North_Bounding_Coordinate: 0.590914
South_Bounding_Coordinate: -1.177936
Keywords:
Theme:
Theme_Keyword_Thesaurus: Ecuador
Theme_Keyword: rivers
Theme_Keyword: hydrography
Place:
Place_Keyword: Ecuador
Place_Keyword: Oriente
Temporal:
Temporal_Keyword: 1993
Access_Constraints:
Data is available to the public, made possible through the NASA LBA program.
Use_Constraints:
There are no use constraints. However, potential users should be wary of using this data for analyses at scales larger than 1:200,000. Users should also keep in mind that this data set does not represent all water bodies in the region.
Hydrography digitized by Bonnie Kaserman of the Spatial Analysis Unit.
Security_Information:
Security_Classification: Unclassified
Native_Data_Set_Environment:
Microsoft Windows NT Version 4.0 (Build 1381) Service Pack 6; ESRI ArcCatalog 8.1.1.649
Cross_Reference:
Citation_Information:
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Attribution was based on the topographic map legend. Accuracy of the attributes is dependent solely on the accuracy of the data source for the original map. Level of accuracy is indeterminite.
Logical_Consistency_Report: Arc and polygon topology exist.
Completeness_Report: Data set is complete.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The data set was digitized with less than a 0.01 RMSE. It is assumed that the topographic maps are compliant with the US National Map Accuracy Standards, giving the hydro features no more than a 125m horizontal error.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: PROFORS
Originator: Instituto Geográfico Militar de Ecuador
Publication_Date: 1993
Title: Mapa del Nororiente de Ecuador: Situación Legal de las Tierras
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Ecuador
Publisher: INEFAN – PROFORS
Source_Scale_Denominator: 250000
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1993
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: hyprofors
Process_Step:
Process_Description:
The hydrographic features on the 1:250,000-scale PROFORS map were digitized. An RMSE of less than 0.01 was achieved in the digitization.
Process_Date: 2000
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Complete chain
Point_and_Vector_Object_Count: 3509
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Label point
Point_and_Vector_Object_Count: 249
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
