Basic Hydrologic Unit Streams by River Basin

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
Nebraska Department of Natural Resources (DNR) in cooperation with Natural Resources Conservation Service (DNRS) of the United States Department of Agriculture (USDA), United States Geological Survey (USGS),Nebraska Department of Environmental Quality (DEQ), Nebraska Department of Water Resources (DWR), and Nebraska Game & Parks Commission (NGP)
Publication_Date: 199511

Title: Basic Hydrologic Unit Streams by River Basin
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Lincoln, Nebraska - United States
Publisher: Nebraska Department of Natural Resources
Online_Linkage:http://www.dnr.state.ne.us/databank/spat.html
Description:
Abstract:
The DNR in cooperation with NRCS, USGS. DEQ, DWR, and NGP delineated and computerized the boundaries of drainage areas that formed the basic hydrologic units needed for water resources planning and other uses. These basic hydrologic units were designed so they could be aggregated to many combinations of watershed or river basins. The DNR also digitized the major stream in each watershed. This documentation describes the digitized streams. They have been integrated into the DNR's computer data systems so they are available to all with the facilities to access the Natural Resources Data Bank.
Purpose:
Section 2-15,100 of the Nebraska statutes gives the DNR responsibility for conducting the State Water Planning and Review Process. The statutory purpose of the planning process is to coordinate and direct the planning efforts of the state agencies and the university divisions with responsibilities and interest in the water resources field. The statutes add that the process shall be designed to, amon other things, develop and maintain the data, information, and analytical capabilities necessary to provide state agencies and other water interests with a support basse for water planning and management activities. The digitized streams and related basic hydrologic units are an important part of the hydrologic section of that information support base.
Supplemental Information:
This data set was re-projected to Stateplane, NAD83, fipszone 2600 for use in the Platte River Cooperative Hydrology Study using the ARCINFO PROJECT command.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 199511
Currentness_Reference: ground condition
Status:
Progress: complete
Maintenance_and_Update_Frequency: updated as more detailed information is required
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -107.1
East_Bounding_Coordinate: -95.3
North_Bounding_Coordinate: 44.7
South_Bounding_Coordinate: 38.8 (See attached table 1-cols West, East, North and South)
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: basic hydrologic unit
Theme_Keyword: hydrologic unit code
Theme_Keyword: SCS hydrologic units
Theme_Keyword: DNRS hydrologic units
Theme_Keyword: DEQ stream classification
Theme_Keyword: gaging station delineation
Theme_Keyword:
NGP fisheries classification Individual river basin names are listed in table 1 col River Basin
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: US
Place_Keyword: Nebraska
Place_Keyword: NE
Place_Keyword: River Basin
Access_Constraints: none
Use_Constraints: None, acknowledgement of the Nebraska Department of Natural Resources.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Person: (optional): Rich Kern
Contact_Organization: Nebraska Department of Natural Resources
Contact_Address:
Address_Type: mailing and physical address
Address: 301 Centennial Mall South, P.O. Box 94676
City: Lincoln
State_or_Province: NE
Postal_Code: 68509-4676
Country: (optional): USA
Contact_Voice_Telephone: (402) 471-2363
Contact_Facsimile_Telephone: (optional): (402) 471-2900
Contact_Electronic_Mail_Address:
(optional): kern@dnr.state.ne.us
Hours_of_Service: (optional):8:00 - 5:00 Central Time


Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Most of the original data was digitized from 7 1/2 quad maps where they were available. This digitized information was processed on a PC with a series of FORTRAN programs and then plotted at 100% scale and overlayed on the original to verify the accuracy. Many checks were programmed into the FORTRAN programs to help correct or identify inaccuracies. Other error checking and correcting was accomplished using visual inspection, Paradox 3.0 and Arc/Info 6.0 and later Arc/Info 7.0.
Logical_Consistency_Report:
The stream codes were checked against a list of valid codes through a FORTRAN program on a PC. Additional checks were made on an Arc/Info workstation. All codes were valid. Maps were generated and a 100% visual check was approved. All data was checked several times through several error checking programs in Arc/Info 6.0 and 7.0 to determine if there were any streams were not associated with their appropriate hydrologic unit.
Completeness_Report:
In most cases the information was digitized from 7 1/2 USGS quadrangle maps. In areas were they were not complete or we did not have them, other maps were used such as the 15-minute series in Nebraska and the 1:250,000 and 1:500,000 series maps in areas of the states bordering Nebraska.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: medium to low - this data does not meet any standards
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: medium to low - this data does not meet any standards
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Nebraska Department of Natural Resources (DNR) in cooperation with Natural Resources Conservation Service (DNRS) of the United States Department of Agriculture (USDA), Nebraska Department of Environmental Quality (DEQ), Nebraska Department of Water Resources (DWR), and Nebraska Game & Parks Commission (NGP)
Publication_Date: 199511

Title: Basic Hydrologic Unit Streams by River Basin
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Lincoln, Nebraska - United States
Publisher: Nebraska Department of Natural Resources
Online_Linkage: (optional): http://www.dnr.state.ne.us
Type_of_Source_Media: "paper"
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1956
Ending_Date: 1990
Source_Currentness_Reference: Ground Condition
Source_Citation_Abbreviation: none
Source_Contribution: spatial and attribute information
Process_Step:
Process_Description:
Basic Hydrologic Units (BHUs) are the drainage areas of the smallest units in the DNR system. They are subdivisions of the areas in the systems of six state and federal agencies: the DNR, Department of Water Resources (DWR), Department of Environmental Quality (DEQ), Game and Parks Commission (GPC), U.S. Geological Survey (USGS), and Soil Conservation Service (SCS). They were created by dividing all streams essential to those systems at all the division points in those systems. All points such as stream gages (DWR and USGS), end points of water quality stream segments (DEQ), and fisheries stream segments (GPC), basin and subbasin boundaries (DNR, DWR, and USGS), hydrologic units (USGS), and watershed boundaries (SCS) were used to divide the essential streams to create elemental stream reaches that could be added together in different combinations to duplicate any of those systems. Delineating the drainage area of these elemental stream reaches produced the smallest subdivisions of the drainage areas used by those agencies. Therefore, basic units can be aggregated to any of their watersheds or basins.
Process_Date: 199511
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Nebraska Department of Natural Resources
Contact_Address:
Address_Type: mailing and physical address
Address: 301 Centennial Mall South, P.O. Box 94676
City: Lincoln
State_or_Province: Nebraska
Postal_Code: 68509-4676
Country: (optional): USA
Contact_Voice_Telephone: (402) 471-2363
Contact_Facsimile_Telephone: (optional): (402) 471-2900
Contact_Electronic_Mail_Address: kern@dnr.state.ne.us
Hours_of_Service: (optional):8:00 - 5:00 Central Time


Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector


Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 14
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: .9996
Longitude_of_Central_Meridian: -99.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500,000.0
False_Northing: 0.0

Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 120.7008
Ordinate_Resolution: 150.876
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6,378,206.4
Denominator_of_Flattening_Ratio: 294.9787


Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: (River basin name).str.pat (see table 1)
Entity_Type_Definition:
Hydrologic unit polygon (.pat) coverage contains all the spatial data. The .pat file identifies the codes representing DNR basic units, NRCS watersheds, gaging stations, DEQ watersheds, and GPC fisheries classification indexes.
Entity_Type_Definition_Source: Nebraska Department of Natural Resources
Attribute:
Attribute_Label: (River basin name).str-id
Attribute_Definition: 6-digit DNR basic stream (hydrologic unit) identifier
Attribute_Definition_Source: Nebraska Department of Natural Resources
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:
A six-digit number (STR-ID) was assigned to identify each BHU. The six-digit number was comprised of 3 sets of two-digit numbers. The first two digits identify the river basins as defined by state statutes and range from 01 to 13. The second set of two- digit numbers identifies the division and ranges from 01 to 17 and the third identifies the BHU and ranges from 01 to 99.
Enumerated_Domain_Value_Definition:
Nebraska is officially divided into 13 river basins so the numbers in the first set range from 01 to 13. The basins are numbered in upstream order from the Missouri River. For example, water flowing from the Big Blue River is the most downstream and is numbered 01, while the White River-Hat Creek basin water flows north into South Dakota and into the Missouri River so is numbered 13.

Each river basin has been subdivided into the drainage areas of the major streams in the basin. The Little Blue and the South Platte river basins have as few as four divisions while the Republican River Basin has 17. Consequently, the second group of two-digit numbers range from 01 to 17 for each river basin numbered in upstream order.

The last two-digit number further subdivides the major stream divisions into the BHU. These numbers range from 01 to 99. Although these last two digits were originally numbered in upstream order, revisions made during the delineation, digitization, processing, and verification processes and subsequent updates required that basic unit numbers sometimes be added or removed. As a result, these numbers are no longer necessarily in upstream order.

Enumerated_Domain_Value_Definition_Source: Nebraska Department of Natural Resources
Attribute:
Attribute_Label: NAME
Attribute_Definition: Stream Name as identified on the 7 1/2 minute quad
Attribute_Definition_Source: Natural Resources Conservation Service
Attribute_Domain_Values:
Unrepresentable_Domain: Based on a stream names as shown on 7 1/2 minute quads for Nebraska and surrounding state
Attribute:
Attribute_Label: ELV
Attribute_Definition: Elevation at the most upstream end of the stream reach
Attribute_Definition_Source: Interpolated from contour data off of 7 1/2 minute quads
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 800
Range_Domain_Maximum: 11,500
Attribute:
Attribute_Label: COLOR
Attribute_Definition: Number to identify the value class of fisheries
Attribute_Definition_Source: Nebraska Game and Parks Commission
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Value class of fisheries ranging from 0 to 4.
Enumerated_Domain_Value_Definition:

0 - Fisheries value not identified

1 - Highest valued fishery resource

2 - High-priority fishery resource

3 - Substantial fishery resource

4 - Limited fishery resource

Enumerated_Domain_Value_Definition_Source: Nebraska Game and Parks Commission
Attribute:
Attribute_Label: Type
Attribute_Definition: Identifier used to specify whether a stream is used as a boundary or not
Attribute_Definition_Source: Nebraska Department of Natural Resources and Natural Resources Conservation Service
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Letters are either B or S
Enumerated_Domain_Value_Definition:
B - Stream is used as a boundary between to drainage basins S - Normal stream reach
Enumerated_Domain_Value_Definition_Source: Nebraska Department of Natural Resources


Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Nebraska Department of Natural Resources
Contact_Person: (optional): Rich Kern
Contact_Position: (optional):
Contact_Address:
Address_Type: mailing and physical address
Address: 301 Centennial Mall South, P.O. Box 94676
City: Lincoln
State_or_Province: Nebraska
Postal_Code: 68509-4676
Country: (optional): USA
Contact_Voice_Telephone: (402) 471-2363
Contact_Facsimile_Telephone: (optional): (402) 471-2900
Contact_Electronic_Mail_Address: kern@dnr.state.ne.us
Hours_of_Service: (optional):8:00 - 5:00 Central Time

Resource_Description: Basic Hydroloic Unit Streams by River Basin
Distribution_Liability: None
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARC (ARC/INFO EXPORT)
Format_Version_Number: ARC/INFO 7.0
Format_Specification:
(optional): This data is in single precision format. After the data was put in ARC/INFO Export format, we ran Unix InfoZip which is compatible with pkzip and WinZip. If you would like a different format or compression, try DNR Overnight Batch Processing under Spatial/GIS Databases or upon request we will export it to any other format you can use.

Format_Information_Content: Spatial and attribute information
File_Decompression_Technique:
First we exported the coverage using Arc/Info 7.2.1, then we ran Unix InfoZip, which is compatible with pkzip and winzip. If you would like a different format or compression, try DNR Overnight Batch Processing under Spatial/GIS Databases or upon request we will export the data in a format you can use.
Transfer_Size: 500K (See attached table 1 - col File Size)
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://www.dnr.state.ne.us
Access_Instructions:
(optional): Access the data through our web site by url http://www.dnr.state.ne.us. Enter the Spatial/GIS Database Option, Enter the River Basin Data Option, Enter the Stream Themes option, Select the River Basin you wish to access, Select the ARC Export Data File option.
Offline_Option:
Offline_Media: 8mm cartridge tape
Recording_Capacity:
Recording_Density: 2
Recording_Density: 4
Recording_Density_Units: gigabytes
Recording_Format: tar
Offline_Option:
Offline_Media: TK50 tape
Recording_Capacity:
Recording_Density: 250
Recording_Density_Units: megabytes
Recording_Format: tar
Offline_Option:
Offline_Media: 3 1/2 inch floppy disk
Recording_Capacity:
Recording_Density: 1.44
Recording_Density_Units: megabytes
Recording_Format: MS-DOS
Offline_Option:
Offline_Media: 5 1/4 inch floppy disk
Recording_Capacity:
Recording_Density: 1.2
Recording_Density_Units: megabytes
Recording_Format: MS-DOS
Fees:
The online copy of the ARC Export data set may be retrieved via web at no charge. For delivery of digital data in other formats there may be an additional charge plus the cost of the media.
Ordering_Instructions:
(optional): You can either order by leaving a message over the web site or call Nebraska Natural Resources Commission.


Metadata_Reference_Information:
Metadata_Date: 199605
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Nebraska Department of Natural Resources
Contact_Person: Rich Kern
Contact_Address:
Address_Type: mailing and physical address
Address: 301 Centennial Mall South, P.O. Box 94676
City: Lincoln
State_or_Province: Nebraska
Postal_Code: 68509-4676
Country: (optional): USA
Contact_Voice_Telephone: (402) 471-2363
Contact_Facsimile_Telephone: (optional): (402) 471-2900
Contact_Electronic_Mail_Address: kern@dnr.state.ne.us
Hours_of_Service: (optional):8:00 - 5:00 Central Time
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: 19950324
------information below is not in standard metadata format---------

Table 1

RIVER BASIN        FILE SIZE(K)  WEST BND  EAST BND  NORTH BND SOUTH BND

bigblue                     745  -98.4602  -96.0778   41.2671   39.1825

elkhorn                     593  -99.5539  -96.2582   42.6192   41.1206

litblue                     427  -98.9608  -96.6775   40.6623   39.6895

loup                        688 -101.4141  -99.1851   42.4291   40.9500

lplatte                     435  -98.0286  -95.8791   41.9064   40.5294

mplatte                     403 -100.8244  -99.3433   40.5144   40.5091

motribs                     405  -98.0462  -95.8411   42.8741   41.0534

nemaha                      502  -96.7585  -95.3075   41.0534   39.6602

niobrara                    954 -104.6272  -97.9636   43.6971   42.0227

nplatte                     372 -107.0630 -100.6754   42.8717   40.4606

republicn                   892 -101.4602  -96.8469   40.9589   39.0413

splatte                     157 -106.1612 -100.6754   41.3556   38.9028

whitehat                    447 -104.2495  -99.3067   44.7822   42.5261




Generated by mp on Thu Nov 14 09:14:11 1996