Basic Hydrologic Unit Streams by River Basin
Metadata:
- Identification_Information:
Citation:
Citation_Information:
Originator:
Nebraska Natural Resources Commission (NRC) in cooperation with Natural Resources Conservation Service (NRCS) 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 Natural Resources Commission
Online_Linkage:
Description:
Abstract:
The NRC 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 NRC also digitized the major stream in each watershed. This documentation describes the digitized streams. They have been integrated into the NRC'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 NRC 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 coverage has been re-projected to Stateplane, NAD83 using the ArcInfo PROJECT command for use in the Platte River Cooperative Hydrology Study.
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: NRCS 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 Natural Resources Commission.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Person: (optional): Rich Kern
Contact_Organization: Nebraska Natural Resources Commission
Contact_Address:
Address_Type: mailing and physical address
Address: 301 Centennial Mall South, P.O. Box 94876
City: Lincoln
State_or_Province: NE
Postal_Code: 68509-4876
Country: (optional): USA
Contact_Voice_Telephone: (402) 471-2081
Contact_Facsimile_Telephone: (optional): (402) 471-3132
Contact_Electronic_Mail_Address:
(optional): kern@nrcdec.nrc.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 Natural Resources Commission (NRC) in cooperation with Natural Resources Conservation Service (NRCS) 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 Natural Resources Commission
- Online_Linkage:
(optional): http://www.nrc.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 NRC system. They are subdivisions of the areas in the systems of six state and federal agencies: the NRC, 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 (NRC, 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 Natural Resources Commission
- Contact_Address:
- Address_Type:
mailing and physical address
- Address:
301 Centennial Mall South, P.O. Box 94876
- City:
Lincoln
- State_or_Province:
Nebraska
- Postal_Code:
68509-4876
- Country:
(optional): USA
- Contact_Voice_Telephone:
(402) 471-2081
- Contact_Facsimile_Telephone:
(optional): (402) 471-3132
- Contact_Electronic_Mail_Address:
kern@nrcdec.nrc.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 NRC basic units, NRCS watersheds, gaging stations, DEQ watersheds, and GPC fisheries classification indexes.
- Entity_Type_Definition_Source:
Nebraska Natural Resources Commission
- Attribute:
- Attribute_Label:
(River basin name).str-id
- Attribute_Definition:
6-digit NRC basic stream (hydrologic unit) identifier
- Attribute_Definition_Source:
Nebraska Natural Resources Commission
- 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 Natural Resources Commission
- 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 Natural Resources Commission 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 Natural Resources Commission
- Distribution_Information:
- Distributor:
- Contact_Information:
- Contact_Organization_Primary:
- Contact_Organization:
Nebraska Natural Resources Commission
- Contact_Person:
(optional): Rich Kern
- Contact_Position:
(optional):
- Contact_Address:
- Address_Type:
mailing and physical address
- Address:
301 Centennial Mall South, P.O. Box 94876
- City:
Lincoln
- State_or_Province:
Nebraska
- Postal_Code:
68509-4876
- Country:
(optional): USA
- Contact_Voice_Telephone:
(402) 471-2081
- Contact_Facsimile_Telephone:
(optional): (402) 471-3132
- Contact_Electronic_Mail_Address:
kern@nrcdec.nrc.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 ult2dos and compressed our data using DOS PKZIP and ZIP2EXE. We did this thinking most of our users would be DOS based ARCVIEW. However, upon request we will output it to another format if you are not able to use this one.
- Format_Information_Content:
Spatial and attribute information
- File_Decompression_Technique:
- Download the file and for example we called it soils. From a dos prompt add the file extension .exe thus calling it soils.exe. Type in soils and it will automatically decompress for you (it needs the extension .exe for this process). If you wish to enter this data into a Dos environment you are ready. If you wish to enter this data into a unix environment you need to run a dos or unix program to convert it from dos to unix. If you do not have the unix version of dos2ult the dos version can be found at our web site url http://www.nrc.state.ne.us under the databank icon and the useful programs option. If you do not have access to a DOS environment then please leave a request at our web site under the databank option and 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.nrc.state.ne.us
- Access_Instructions:
- (optional): Access the data through our web site by url http://www.nrc.state.ne.us. Enter the Data bank 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 Natural Resources Commission
Contact_Person: Rich Kern
Contact_Address:
Address_Type: mailing and physical address
Address: 301 Centennial Mall South, P.O. Box 94876
City: Lincoln
State_or_Province: Nebraska
Postal_Code: 68509-4876
Country: (optional): USA
Contact_Voice_Telephone: (402) 471-2081
Contact_Facsimile_Telephone: (optional): (402) 471-3132
Contact_Electronic_Mail_Address: kern@nrcdec.nrc.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