Description Details Source Examples
The LewWillCol.ssn data folder contains the spatial, attribute, and topological information needed to construct a spatial stream network object using the SSN package.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 | The LewWillCol.ssn folder contains two spatial datasets:
edges: polyline shapefile representing the stream network
sites: point shapefile representing the observed site locations
There is also 1 text file, netID72.txt, which contains the topological
information for the stream network in the Lewis/Willamette rivers in
the Columbia basin dataset.
Attribute data are also stored within each of the spatial datasets.
The column names are defined as follows:
edges:
COMID: Common identifier of an NHD feature or relationship
FDATE: Feature currency date. This is the date the stream line
was initially drawn, or its latest update.
RESOLUTION: This differentiates the 1:24k scale from the 1:100k scale
NHD. In our case we are using 1:100k, so the field is always
populated with "Medium".
GNIS_ID: Geographic Names Information System identifier
GNIS_Name: Feature name as found in the Geographic Names Information
System
LENGTHKM: Length (km)
REACHCODE: Unique identifier for a reach. The first 8 digits contain
the identfier for the HUC8 and the last 6 digits are a
unique within-HUC8 identifier for the reach
FLOWDIR: This is the flow direction. It can have one of two values,
WithDigitized or Uninitialized. We only kept WithDigitized
after reconditioning. This indicates it's a flowline with
flow and direction.
FCODE: Numeric code that contains the feature type and it's attributes
as found in the NHDFCode lookup table
CUMDRAINAG: Cumulative drainage area (km2) for the lowermost location on
the edge
AREAWTMAP: Area weighted mean annual precipitation (mm) at the lowermost
location on the edge
SLOPE: Slope of the edge (cm/cm)
h2oAreaKm2: Watershed area (km2) for the lowermost location on the line
segment
rid: Reach identifier
upDist: Distance from the stream outlet (most downstream location in
the the stream network) to the uppermost location on the line
segment
areaPI: Segment proportional influence value, calculated using watershed
area (h2oAreaKm2)
afvArea: Additive function value, calculated using areaPI
netID: Network identifier
Length: Length of line segment (m)
sites:
OBSPRED_ID: Unique ID assigned to each temperature deployment. A deployment
is a site + year combination of data. Individual sites have
multiple deployments when temperature monitoring occurs in more
than one year.
PERMA_FID: ID given to a single temperature sensor site. A site may contain
multiple years of data.
SAMPLEYEAR: The year that temperature data were recorded at the location.
SNAP_X: This is for the observation points only. It's the X coordinate
of the point after it was snapped to the NHD network.
SNAP_Y: This is for the observation points only. It's the X coordinate
of the point after it was snapped to the NHD network.
STREAM_AUG: mean daily temperature from 1 August - 31 August. This is the
modeled response variable
ID_1KM: A unique ID for the 1 km stream segments and corresponding prediction points.
FTYPE: This attribute is only for the predicted temperature locations.
This attribute is the NHDPlus feature type and can have one of
two values, either 'StreamRiver' or 'ArtificialPath'. This is an
NHDPlus defined attribute.
WATERBODY: This attribute is only for the predicted temperature locations.
This attribute is for prediction points that fall within an
NHDPlus water body feature. Values may be 0 or 1. 1 represents
a point or stream segment within a water body feature. This
attribute was generated at the Boise Lab to designate line
segments that fall within water bodies.
TAILWATER: Categorical predictor variable coded as 0/1 to indicate whether
a stream temperature site is downstream from a reservoir that
creates an anomalously cold tailwater.
ELEV: Elevation in meters.
CANOPY: Percent canopy for each 1 km stream segment.
SLOPE: Slope (rise/run) for each NHDPlus stream reach.
PRECIP: NHDPlus precipitation measure (mm)
CUMDRAINAG: Cumulative drainage area (sq. km) for each NHDPlus stream reach
Y_COORD: coordinate of Albers Equal Area projection with units meters,
used as surrogate for latitude.
NLCD11PC: Percent cumulative open water from NHDPlus, derived from
National Land Cover Dataset.
GLACIER: The percentage of the catchment area classified as glacier at
each temperature site.
BFI: Base flow index. Base flow to total flow as a percentage.
Air_Aug: August mean air temperature for the NorWeST processing unit.
Flow_Aug: August mean stream flow metric for the NorWeST processing unit.
OBSPREDID: A unique ID for each feature.
NEAR_FID: the FID of the nearest edge feature
NEAR_DIST: the distance between the original site coordinates and the nearest
edge
NEAR_X: x coordinate
NEAR_Y: y coordinate
NEAR_ANGLE: the angle between the original site location and the nearest
point on the closest edge
rid: Reach identifier of the edge the site resides on
ratio: Site ratio value; provides the proportional distance along the
edge to the site location
upDist: Distance upstream from the stream outlet (m)
afvArea: Additive function value calculated using waterhsed area (h2oAreaKm2)
locID: Location identifier
netID: Stream network identifier
pid: Point identifier
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The data are downloadable from the NorWeST site. http://www.fs.fed.us/rm/boise/AWAE/projects/NorWeST.html
NHDPlus V1 website: http://www.horizon-systems.com/NHDPlus/NHDPlusV1_home.php
A User Guide for the data can be found here: ftp://ftp.horizon-systems.com/NHDPlus/NHDPlusV1/documentation/NHDPLUSV1_UserGuide.pdf
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | SSN4 <- importSSN(system.file("lsndata/LewWillCol.ssn",
package = "fluvgrm"), o.write = TRUE)
# default plot with blue lines for stream segments and
# black + for data locations
plotSSN(SSN4)
# plot with response variable colored by value
plotSSN(SSN4, VariableName = 'STREAM_AUG', pch = 19, cex = 1.2,
addFuncColName = 'afvArea', strCol = 'grey50')
# to run a script that will create Fig. 4-6 in the Zimmerman and
# Ver Hoef paper "The Torgegram for Fluvial Variography: Characterizing
# Spatial Dependence on Stream Networks" navigate to the script on your
# computer found here:
system.file("scripts/realDataFigures.R", package = "fluvgrm")
# if you run it from source,
source(system.file("scripts/realDataFigures.R", package = "fluvgrm"))
# Figures 5 and 6 are stored on the R temp directory,
# which can be found with
tempdir()
# and you can navigate to it in your file system to see the pdfs
# that were created. Figure 5 on the raw temperature data is named
# "FCFUtemp.pdf," and Figure 6 on the residuals is names "FCFUresid.pdf."
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