20260915
15110000
1.0
nhd_plus_level_5_rivers_simplified_4m_arc
-124.707777
-116.519026
41.966995
48.999883
1
002
Geographic
GCS_North_American_1983
Angular Unit: Degree (0.017453)
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20260915
15045800
1:100,000
150000000
dataset
Stanley Frazier
Bureau of Land Management, Oregon State Office
State Data Administrator
(503)808-6009 (direct), (503)808-6004 (front desk)
(503)808-6419
P.O. Box 2965
Portland
OR
97208
US
sfrazier@blm.gov
20260915
ArcGIS Metadata
1.0
File Geodatabase Feature Class
Stanley Frazier
Bureau of Land Management, Oregon State Office
State Data Administrator
(503)808-6009 (direct), (503)808-6004 (front desk)
(503)808-6419
P.O. Box 2965
Portland
OR
97208
US
sfrazier@blm.gov
False
Name: Stanley Frazier
Organization: Bureau of Land Management, Oregon State Office
Position: State Data Administrator
Role: Point of Contact
https://gbp-blm-egis.hub.arcgis.com/pages/oregon
BLM-STATE
Oregon
Washington
BLM-THEME
Hydrology
NONE
Artificial Path
Canal / Ditch
Cartography
Catchment
EARTH SCIENCE
EPA
GEODATA
GIS
Hydrography
Hydrologic modeling
Lake / Pond
Land Cover
Land Surface
National Elevation Dataset
National Hydrography Dataset
National Land Cover Dataset
NED
NHD
NHDPlus
NLCD
Reach
Reservoir
Riparian
River Coding Systems
SPARROW
Spatially Referenced Regressions on Watershed Attributes
Spring / Seep
Stream / River
Stream flow
Stream velocity
StreamStats
Swamp / Marsh
Topography
USGS
Water-quality
Watershed
Bureau of Land Management
U.S. Department of the Interior, Bureau of Land Management (BLM)
Simplified Cartographic Level 5 Density NHD Plus Streams arc
0420-10
OR/WA Bureau of Land Management
vector digital data
This dataset consists of NHD flowlines that have a NHDFlowlineVAAThinner value equal to 5. Progressively denser networks may be generated by selecting
NHDPlus flowlines that have NHDFlowlineVAA.Thinner <= 2 then 3, 4, 5, and 6.
The NHDPlus includes a stream network (based on the 1:100,000-scale NHD), improved networking, naming, and "value-added attributes" (VAA's). NHDPlus also includes elevation-derived catchments (drainage areas) produced using a drainage enforcement technique first broadly applied in New England, and thus dubbed "The New-England Method". This technique involves "burning-in" the 1:100,000-scale NHD and when available building "walls" using the national Watershed Boundary Dataset (WBD). The resulting modified digital elevation model (HydroDEM) is used to produce hydrologic derivatives that agree with the NHD and WBD.
This data is intended for small scale cartographic display of NHD Plus stream line work.
The geospatial data sets included in NHDPlus are intended to support a variety of water-related applications. They already have been used in an application to develop estimates of mean annual streamflow and velocity for each NHD flowline in the conterminous United States. The results of these analyses are included with the NHDPlus data. A water-quality model developed by the U.S. Geological Survey (USGS) called SPARROW (Spatially Referenced Regressions on Watershed Attributes), can utilize the NHDPlus network functionality to track the downstream transport of nutrients, sediments, or other substances. NHDPlus water bodies and estimates of streamflow and velocity are used in SPARROW to identify reservoir retention and in-stream loss factors. NHDPlus climatic and land surface attributes can be used in SPARROW to identify potential factors in the delivery of nutrients from the land surface to streams. NHDPlus land cover information is useful for SPARROW in determining potential sources of nutrients. NHDPlus data is also being used in select areas for a USGS Web-based application, called StreamStats. StreamStats provides tools to interactively select any point on the NHDPlus to obtain streamflow and watershed characteristics for the selected point. NHDPlus has been designed to accommodate many users needs for future applications. NHDPlus provides the framework and tools necessary to customize the behavior of the network relationships as well as building upon the attribute database, for which the user can assign its own data to the network.
Artificial Path
Canal / Ditch
Cartography
Catchment
EARTH SCIENCE
elevation
EPA
GEODATA
GIS
Hydrography
Hydrologic modeling
Hydrology
inlandWaters
Lake / Pond
Land Cover
Land Surface
National Elevation Dataset
National Hydrography Dataset
National Land Cover Dataset
NED
NHD
NHDPlus
NLCD
Oregon
Reach
Reservoir
Riparian
River Coding Systems
SPARROW
Spatially Referenced Regressions on Watershed Attributes
Spring / Seep
Stream / River
Stream flow
Stream velocity
StreamStats
Swamp / Marsh
Topography
USGS
Washington
Water-quality
Watershed
None. Acknowledgement of the originating agencies (USEPA and USGS) would be appreciated in products derived from these data.
No warranty is made by the Bureau of Land Management as to the accuracy, reliability, or completeness of these data for individual use or aggregate use with other data.
Discretionary, contains no sensitive materials - generally considered releasable.
Non classified
None
ESRI ArcCatalog 9.3.1.1850
true
-124.641821
-102.051613
48.999877
31.999969
0.000000
0.000000
publication date
2005
0.000000
0.000000
NHD National Hydrography Dataset
1
-124.707777
-116.519026
48.999883
41.966995
Bureau of Land Management (BLM), Oregon State Office
Ryan Kelley
BLM OSO
GIS Specialist
503-808-6495
PO Box 2965
Portland
OR
97204
US
ryan_kelley@blm.gov
Name: Ryan Kelley
Organization: BLM OSO
Position: GIS Specialist
Role: Processor
Last metadata review date: 20100614
Not classified
None
Unknown
Unknown
Unknown
Unknown
A snapshot of the NHD was used as the baseline framework from which enhancements to the network were built upon. Enhancements include feature names, network connectivity and network flow relationships. This enhanced NHD version was then used in conjunction with the NED, and WBD (where applicable) to create a HydroDEM, for generation of the catchment Grid/shapefile, and flow direction/accumulation Grids. The enhanced NHD was used to compute and assign flowline Value Added Attributes (VAAs) to this network.
1:100,000
National Hydrography Dataset (NHD) Medium Resolution
NHD
none
U.S. Geological Survey (USGS) and the U.S. Environmental Protection Agency (USEPA)
vector digital data
http://nhd.usgs.gov
The source NHD is a snapshot of the dataset accessed on 1/31/2004 and updated throughout 2004 and 2005.
2005
NED data used in combination with NHD, WBD (where applicable) to create a HydroDEM, to generate NHDPlus Catchments, surface flow direction and accumulation Grids. Stream elevations from NED which were used to help derive stream slope and stream velocity.
National Elevation Dataset (NED)
NED
1999
U.S. Geological Survey (USGS), EROS Data Center
U.S. Geological Survey
Sioux Falls, SD
raster digital data
http://ned.usgs.gov/
Date data was accessed
Source dataset used to assign catchment and flowline land cover attributes.
National Land Cover Dataset 1992 (NLCD 1992)
NLCD 1992
1999-05-25
1
U.S. Geological Survey (USGS)
U.S. Geological Survey
Sioux Falls, SD
raster digital data
http://landcover.usgs.gov/natllandcover.php
ground condition
Source dataset used to compute mean annual precipitation for each catchment and area weighted precipitation for each flowline. Weighted precipitation values for each flowline was used as a variable in a Vogel equation for estimating mean annual streamflow. The Vogel estimates of mean annual flow were used as a source variable in a Jobson equation to compute mean annual stream velocity estimates.
United States Average Annual Precipitation, 1961-90
2000-08
Chris Daly and George Taylor of the Spatial Climate Analysis Service at Oregon State University.
Spatial Climate Analysis Service at Oregon State University (SCAS/OSU)
Corvallis, Oregon, USA
raster digital data
This dataset from the PRISM model, developed by Chris Daly of SCAS/OSU.
http://www.ocs.orst.edu/prism/
Climatological period from which the point observations were taken.
1961-01-01
1990-12-31
Source dataset used to compute mean annual temperature for each catchment and area weighted mean annual temperature for each flowline. Weighted mean annual temperature values for each flowline was used as a variable in a Vogel equation for estimating mean annual streamflow. The Vogel estimates of mean annual flow were used as a source variable in a Jobson equation to compute mean annual stream velocity estimates.
United States Annual Mean Temperature, 1961-90
2000-08
1
Chris Daly and George Taylor of the Spatial Climate Analysis Service at Oregon State University.
Spatial Climate Analysis Service at Oregon State University (SCAS/OSU)
Corvallis, Oregon, USA
raster digital data
This dataset from the PRISM model, developed by Chris Daly of SCAS/OSU.
http://www.ocs.orst.edu/prism/
Climatological period from which the point observations were taken.
1961-01-01
1990-12-31
12-digit subwatershed divides from the Watershed Boundary Dataset (WBD)
were used (for states where certified WBD was available) as a ridgeline
enforcment factor in a process called "walling" in the production of HydroDEMs. The HydroDEMs are the source data from which NHD Catchments are delineated from. Catchments with coincident boundaries with the WBD are in conformance with the WBD. NHDPlus Flow Direction and Accumulation Grids are hydrologic derivative products of the HydroDEMs.
1:24,000
Watershed Boundary Dataset (WBD)
WBD
U.S. Department of Agriculture, Natural Resources Conservation Service (NRCS) and the U.S. Geological Survey (USGS)
vector digital data
Only certified WBD was included for use in HydroDEM production. These data are tiled by U.S. State, therefore only selected states with full certification were used. The publication date for each state's WBD varies. (See Source Time Period of Content)
http://www.ncgc.nrcs.usda.gov/products/datasets/watershed/
publication dates
Location of gages were spatially referenced to the NHDPlus flowlines to create a gaging station point event table, where for each gage in the database, the corresponding NHD Reachcode and measure are recorded. An early version of the dataset was also used for the QA/QC of NHDPlus cumulative drainage areas and estimates of mean annual stream flow.
USGS Streamgages Linked to the Medium Resolution NHD
David W. Stewart, Alan Rea and David M. Wolock
U.S. Geological Survey
Reston, Va
vector digital data
Data Series
DS-195
http://water.usgs.gov/GIS/metadata/usgswrd/XML/streamgages.xml
Date of data extract from NWIS
Downloaded NHDPlus data (www.horizon-systems.com/nhdplus/data.php) for all regions within area of interest in Conterminous US. Joined NHDFlowlineVAA.dbf table with NHDFlowline for each region. Selected on field THINNERCOD Level 5 and dissolved on GNIS_NAME. Merged each region together and clipped data to clipped to area of interest in Conterminous US. Simplified data to 4 meters.
Simplified arcs using model to "thin" the data for faster drawing times. Thinning the data to a pre-determined pixel distance allows for features to keep the same shape at a specific scale without noticeable difference. This data was designed to be used at a 1:100,000 scale or a smaller scale. The original data was simplified using a tolerance of 4 meters, which was determined by a formula by the technical specialist.
2010-03
Ryan Kelley
BLM OSO
GIS Specialist
503-808-6495
PO Box 2965
Portland
OR
97204
US
ryan_kelley@blm.gov
Clipped data to a two mile buffer of the state boundaries of Oregon and Washington.
2010-06-14T08:14:02
Ryan Kelley
BLM OSO
GIS Specialist
503-808-6495
PO Box 2965
Portland
OR
97204
US
ryan_kelley@blm.gov
Name: Ryan Kelley
Organization: BLM OSO
Position: GIS Specialist
Role: Processor
622
EPSG
6.5(3.0.1)
nhd_plus_level_1_streams_conWest_simplified_to_4m_for_100K_arc
Feature Class
622
nhd_plus_level_1_streams_conWest_simplified_to_4m_for_100K_arc
OBJECTID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
OBJECTID
OID
4
0
0
Shape
Feature geometry.
ESRI
Coordinates defining the features.
Shape
Geometry
0
0
0
nhdflowline_GNIS_NAME
GNIS stream name
Geographic Name Information System
nhdflowline_GNIS_NAME
String
65
0
0
Shape_Length
Length of feature in internal units.
ESRI
Positive real numbers that are automatically generated.
Shape_Length
Double
8
0
0
This data is intended for small scale cartographic display of NHD Plus stream line work.
Simple
FALSE
622
TRUE
FALSE