DATA DICTIONARY #2 for Level 1 Habitat Data Sets
TRANSECT TABLE:
There is one record in the transect table for each transect visit.
Each transect visit is identified by an unique integer number, "Transect-id
number", that links the data in the transect table to the transect-point table.
The transect may not be the same location for each different visit to
the sampling reach. The data element "transect number" refers to the
sequence number of a transect visited on a particular date. The
difference between the two data elements is shown by the following
example. A sampling reach is visited on two different dates, and
three transects are identified during each visit. Assuming these
data are the only transects stored in the table, the data would be
identified as follows:
Date #1 Date #2
Transect #1 Transect #1
TCTID = 1 TCTID = 4
TCTNO = 1 TCTNO = 1
Transect #2 Transect #2
TCTID = 2 TCTID = 5
TCTNO = 2 TCTNO = 2
Transect #3 Transect #3
TCTID = 3 TCTID = 6
TCTNO = 3 TCTNO = 3
Sampling-reach-id number
COLUMN-NAME: REACHID
TIME-VARIANT: no
STORAGE TYPE: char
REVISED: 9/23/94, 11/4/96 (lengthened)
DOMAIN: >0
Provides sampling-reach identification for the transect.
Transect-id number
COLUMN-NAME: TCTID
TIME-VARIANT: no
STORAGE TYPE: integer
DOMAIN: >0
Transect-visit date
COLUMN-NAME: DATE
TIME-VARIANT: no
STORAGE TYPE: date
DOMAIN: valid date
Date of visit to transect.
Transect-sequence number
COLUMN-NAME: TCTNO
REVISED: 5/2/1994
TIME-VARIANT: yes
STORAGE TYPE: integer
DOMAIN: >0
Sequential-identification number of the transect.
Distance to downstream end of sampling reach
COLUMN-NAME: DSDIST
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 0
UNITS: meters
DOMAIN: >=0.0
Curvilinear distance from midpoint of transect to downstream end of
sampling reach, following the stream channel.
Channel width
COLUMN-NAME: CHWIDTH
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: meters
DOMAIN: >0.0
Wetted stream width at the transect, measured perpendicular to flow direction.
Channel-width remark
COLUMN-NAME: CHWIDRM
REVISED: 5/2/1994
TIME-VARIANT: yes
STORAGE TYPE: char
DOMAIN: ref.list
blank = no remark
S = width computed from transit, level, or GPS survey
T = width determined by steel tape
R = width determined by rangefinder
E = width was estimated
> = width greater than value shown
optionally used to qualify the width measurement: CHWIDTH
Left-bank width
COLUMN-NAME: LBWIDTH
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 0
UNITS: meters
DOMAIN: >0.0
Width of left bank flooded with 2-year recurrence interval.
Left-Bank-width remark
COLUMN-NAME: LBWIDRM
REVISED: 5/2/1994, changed column name from LBWIDRK to LBWIDRM 3/3/96
TIME-VARIANT: yes
STORAGE TYPE: char
DOMAIN: ref.list, see CHWIDRM
optionally used to qualify the width measurement: LBWIDTH
Right-bank width
COLUMN-NAME: RBWIDTH
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 0
UNITS: meters
DOMAIN: >0.0
Width of left bank flooded with 2-year recurrence interval.
Right-Bank-width remark
COLUMN-NAME: RBWIDRM
REVISED: 5/2/1994
TIME-VARIANT: yes
STORAGE TYPE: char
DOMAIN: ref.list, see CHWIDRM
optionally used to qualify the width measurement: RBWIDTH
Left flood-plain width
COLUMN-NAME: LFPWIDTH
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 0
UNITS: meters
DOMAIN: >0.0
Left-floodplain-width remark
COLUMN-NAME: LFPWRM
REVISED: 5/2/1994
TIME-VARIANT: yes
STORAGE TYPE: char
DOMAIN: ref.list, see CHWIDRM
optionally used to qualify the width measurement: LFPWIDTH
Right flood-plain width
COLUMN-NAME: RFPWIDTH
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 0
UNITS: meters
DOMAIN: >0.0
Right-floodplain-width remark
COLUMN-NAME: RFPWRM
REVISED: 5/2/1994
TIME-VARIANT: yes
STORAGE TYPE: char
DOMAIN: ref.list, see CHWIDRM
optionally used to qualify the width measurement: RFPWIDTH
Canopy angle
COLUMN-NAME: CANANGLE
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 0
UNITS: degrees
DOMAIN: 180>x>0.0
Channel compass heading
COLUMN-NAME: CHANHEAD
REVISED: 2/7/97 (enlarged domain)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 0
UNITS: degrees
DOMAIN: 360>=x>=0
Left bank angle
COLUMN-NAME: LBANGLE
REVISED: 2/7/97 (enlarged domain)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 0
UNITS: degrees
DOMAIN: 180>=x>=0.0
Right bank angle
COLUMN-NAME: RBANGLE
REVISED: 5/4/94 (changed name from RBRANGLE)
REVISED: 2/7/97 (enlarged domain)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 0
UNITS: degrees
DOMAIN: 180>=x>=0.0
Left bank height
COLUMN-NAME: LBHIGH
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: meters
DOMAIN: >0.0
Right bank height
COLUMN-NAME: RBHIGH
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: meters
DOMAIN: >0.0
Left bank-vegetation stability
COLUMN-NAME: LBSTAB
REVISED: 4/94
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS: code
DOMAIN: 1-4
1 = <25% of bank surface covered by veg.,gravel, etc.
2 = 25-49% of bank surface covered by veg.,gravel, etc.
3 = 50-79% of bank surface covered by veg.,gravel, etc.
4 = >80% of bank surface covered by veg.,gravel, etc.
Right bank-vegetation stability
COLUMN-NAME: RBSTAB
REVISED: 4/94
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS: code
DOMAIN: 1-4 (see LBSTAB)
Left bank shape
COLUMN-NAME: LBSHAPE
REVISED: 4/94
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: ref.list (from Habitat Protocol)
CC = concave upward
LN = linear
CV = convex upward
Right bank shape
COLUMN-NAME: RBSHAPE
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: ref.list
Left bank erosion
COLUMN-NAME: LBEROS
REVISED: 4/94
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: ref.list (from Habitat Protocol)
DA = debris avalanche
RF = rotational failure
SL = slab failure
CB = cut-bank scalloping
NO = none
Right bank erosion
COLUMN-NAME: RBEROS
REVISED: 4/94
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: ref.list (see LBEROS)
Left bank dominant substrate
COLUMN-NAME: LBDOMSUB
REVISED: 4/94
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: ref.list (from habitat protocol)
BR = bedrock
BO = boulder
CO = cobble
GV = gravel
SA = sand
SI = silt
HP = hardpan
MA = marl
DE = detritus
MU = muck
AR = artificial
Right bank dominant substrate
COLUMN-NAME: RBDOMSUB
REVISED: 4/94
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: ref.list (see LBDOMSUB)
Left bank subdominant substrate
COLUMN-NAME: LBSUBSUB
REVISED: 4/94
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: ref.list (see LBDOMSUB)
Right bank subdominant substrate
COLUMN-NAME: RBSUBSUB
REVISED: 4/94
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: ref.list (see LBDOMSUB)
(NOTE: Bar-Shelf-Island data elements were moved to a separate
table; May, 1994)
Left bank, Quad.1, woody-species description
COLUMN-NAME: LBQ1WSNM
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: free text
Left bank, Quad.2, woody-species description
COLUMN-NAME: LBQ2WSNM
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: free text
Left bank, Quad.3, woody-species description
COLUMN-NAME: LBQ3WSNM
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: free text
Left bank, Quad.4, woody-species description
COLUMN-NAME: LBQ4WSNM
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: free text
Left bank, Quad.1, woody species
COLUMN-NAME: LBQ1WSSP
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS: code
DOMAIN: valid NODC code
Left bank, Quad.2, woody species
COLUMN-NAME: LBQ2WSSP
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS: code
DOMAIN: valid NODC code
Left bank, Quad.3, woody species
COLUMN-NAME: LBQ3WSSP
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS: code
DOMAIN: valid NODC code
Left bank, Quad.4, woody species
COLUMN-NAME: LBQ4WSSP
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS: code
DOMAIN: valid NODC code
Left bank, Quad.1, dist to sample
COLUMN-NAME: LBQ1DIST
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: meters
DOMAIN: > 0.0, -9
A value of -9 indicates no trees within the point-quarter .
Left bank, Quad.2, dist to sample
COLUMN-NAME: LBQ2DIST
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: meters
DOMAIN: >0.0, -9
Left bank, Quad.3, dist to sample
COLUMN-NAME: LBQ3DIST
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: meters
DOMAIN: > 0.0, -9
Left bank, Quad.4, dist to sample
COLUMN-NAME: LBQ4DIST
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: meters
DOMAIN: > 0.0, -9
Left bank, Quad.1, diam @ breast
COLUMN-NAME: LBQ1DBH
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 2
UNITS: meters
DOMAIN: > 0.0, -9
Left bank, Quad.2, diam @ breast
COLUMN-NAME: LBQ2DBH
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 2
UNITS: meters
DOMAIN: > 0.0, -9
Left bank, Quad.3, diam @ breast
COLUMN-NAME: LBQ3DBH
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 2
UNITS: meters
DOMAIN: > 0.0, -9
Left bank, Quad.4, diam @ breast
COLUMN-NAME: LBQ4DBH
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 2
UNITS: meters
DOMAIN: > 0.0, -9
Left bank, Quad.1, # trunks
COLUMN-NAME: LBQ1NT
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS:
DOMAIN: > 0.0, -9
Left bank, Quad.2, # trunks
COLUMN-NAME: LBQ2NT
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS:
DOMAIN: > 0.0, -9
Left bank, Quad.3, # trunks
COLUMN-NAME: LBQ3NT
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS:
DOMAIN: > 0.0, -9
Left bank, Quad.4, # trunks
COLUMN-NAME: LBQ4NT
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS:
DOMAIN: > 0.0, -9
Right bank, Quad.1, woody-species description
COLUMN-NAME: RBQ1WSNM
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: free text
Right bank, Quad.2, woody-species description
COLUMN-NAME: RBQ2WSNM
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: free text
Right bank, Quad.3, woody-species description
COLUMN-NAME: RBQ3WSNM
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: free text
Right bank, Quad.4, woody-species description
COLUMN-NAME: RBQ4WSNM
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: free text
Right bank, Quad.1, woody species
COLUMN-NAME: RBQ1WSSP
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS: code
DOMAIN: valid NODC code
Right bank, Quad.2, woody species
COLUMN-NAME: RBQ2WSSP
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS: code
DOMAIN: valid NODC code
Right bank, Quad.3, woody species
COLUMN-NAME: RBQ3WSSP
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS: code
DOMAIN: valid NODC code
Right bank, Quad.4, woody species
COLUMN-NAME: RBQ4WSSP
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS: code
DOMAIN: valid NODC code
Right bank, Quad.1, dist to sample
COLUMN-NAME: RBQ1DIST
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: meters
DOMAIN: > 0.0, -9
Right bank, Quad.2, dist to sample
COLUMN-NAME: RBQ2DIST
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: meters
DOMAIN: > 0.0, -9
Right bank, Quad.3, dist to sample
COLUMN-NAME: RBQ3DIST
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: meters
DOMAIN: > 0.0, -9
Right bank, Quad.4, dist to sample
COLUMN-NAME: RBQ4DIST
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: meters
DOMAIN: > 0.0, -9
Right bank, Quad.1, diam @ breast
COLUMN-NAME: RBQ1DBH
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 2
UNITS: meters
DOMAIN: > 0.0, -9
Right bank, Quad.2, diam @ breast
COLUMN-NAME: RBQ2DBH
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 2
UNITS: meters
DOMAIN: > 0.0, -9
Right bank, Quad.3, diam @ breast
COLUMN-NAME: RBQ3DBH
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 2
UNITS: meters
DOMAIN: > 0.0, -9
Right bank, Quad.4, diam @ breast
COLUMN-NAME: RBQ4DBH
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 2
UNITS: meters
DOMAIN: > 0.0, -9
Right bank, Quad.1, # trunks
COLUMN-NAME: RBQ1NT
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS: count
DOMAIN: > 0.0, -9
Right bank, Quad.2, # trunks
COLUMN-NAME: RBQ2NT
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS: count
DOMAIN: > 0.0, -9
Right bank, Quad.3, # trunks
COLUMN-NAME: RBQ3NT
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS: count
DOMAIN: > 0.0, -9
Right bank, Quad.4, # trunks
COLUMN-NAME: RBQ4NT
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS: count
DOMAIN: > 0.0, -9
Woody snags amount
COLUMN-NAME: WSAREA
REVISED: 94/07/11 (from Units: sq. feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: sq. meters
DOMAIN: >= 0.0
Overhanging vegetation amount
COLUMN-NAME: OVAREA
REVISED: 94/07/11 (from Units: sq. feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: sq. meters
DOMAIN: >= 0.0
Undercut banks amount
COLUMN-NAME: UBAREA
REVISED: 94/07/11 (from Units: sq. feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: sq. meters
DOMAIN: >= 0.0
Boulders amount
COLUMN-NAME: BDAREA
REVISED: 94/07/11 (from Units: sq. feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: sq. meters
DOMAIN: >= 0.0
Sloughs amount
COLUMN-NAME: SHAREA
REVISED: 94/07/11 (from Units: sq. feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: sq. meters
DOMAIN: >= 0.0
Macrophytes, emergent amount
COLUMN-NAME: MEAREA
REVISED: 94/07/11 (from Units: sq. feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: sq. meters
DOMAIN: >= 0.0
Macrophytes, submerged amount
COLUMN-NAME: MSAREA
REVISED: 94/07/11 (from Units: sq. feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: sq. meters
DOMAIN: >= 0.0
Macrophytes, floating amount
COLUMN-NAME: MFAREA
REVISED: 94/07/11 (from Units: sq. feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: sq. meters
DOMAIN: >= 0.0
Rubbish, (human) amount
COLUMN-NAME: RBAREA
REVISED: 94/07/11 (from Units: sq. feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: sq. meters
DOMAIN: >= 0.0
Other amount
COLUMN-NAME: OTAREA
REVISED: 94/07/11 (from Units: sq. feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: sq. meters
DOMAIN: >= 0.0
---------------------------------------------------------------
TRANSECT POINT TABLE:
Each of the data elements in the table are time-variant results tied
to single point within the transect. Each point within a transect
will be offset from the feature-event point for the station (tied to
the sampling reach and transect). The offset will be defined with
text identifing the transect number and transect-point number.
Transect-id number
COLUMN-NAME: TCTID
TIME-VARIANT: yes
STORAGE TYPE: integer
DOMAIN: > 0.0
Transect-pnt-id number
COLUMN-NAME: TCTPNO
TIME-VARIANT: no
STORAGE TYPE: integer
DOMAIN: > 0.0
identifies the sequence number of the point within the
transect. Start with '1' for the left-most point in each transect.
Dist. from LEW
COLUMN-NAME: LEWDIST
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: meters
DOMAIN: > 0.0
Elevation of the streambed
COLUMN-NAME: BEDELEV
REVISED: 94/6/13 (added)
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 2
UNITS: meters
DOMAIN: positive numbers are feet above NGVD
Depth of water
COLUMN-NAME: DEPTH
REVISED: 94/07/11 (units from feet to meters)
REVISED: 97/02/07 (domain enlarged to inc. 0)
REVISED: 97/02/12 (decimals from 1 to 2)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 2
UNITS: meters
DOMAIN: >= 0.0
Velocity of flow
COLUMN-NAME: VELOCITY
REVISED: 94/07/11 (from Units: ft./sec.)
REVISED: 97/02/07 (enlarged domain to inc. eddy flow)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 2
UNITS: m./sec.
DOMAIN: real (>0 flowing downstream)
Dominant substrate
COLUMN-NAME: DOMSUB
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: ref.list
Subdominant substrate
COLUMN-NAME: SUBSUB
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: ref.list
Silt covering
COLUMN-NAME: SILT
TIME-VARIANT: yes
STORAGE TYPE: char
DOMAIN: y/n
Embeddedness
COLUMN-NAME: EMBED
REVISED: 4/94
TIME-VARIANT: yes
STORAGE TYPE: integer
UNITS: code
DOMAIN: 0-5 (from Habitat Protocol)
0 = no gravel, cobble or boulders (GCB)
1 = >75% of surface area of GCB covered by fine sediments
2 = 51-75% of surface area of GCB covered by fine sediments
3 = 26-50% of surface area of GCB covered by fine sediments
4 = 5-25% of surface area of GCB covered by fine sediments
5 = < 5% of surface area of GCB covered by fine sediments
-------------------------------------------------------------------------------------------
CHANNEL FEATURE TABLE:
There is one record in the table
for each occurrence of each channel feature in every transect. For
example, if a transect has two bars, one shelf, and zero islands, there
will be three records in the table, all with the same value of TCTID.
Transect-id number
COLUMN-NAME: TCTID
TIME-VARIANT: yes
STORAGE TYPE: integer
DOMAIN: > 0.0
Channel-feature type
COLUMN-NAME: CHFEAT
TIME-VARIANT: no
STORAGE TYPE: char
DOMAIN: ref.list: bar, shelf, island
identify the channel-feature type being described
Sequential feature number within transect
COLUMN-NAME: FEATNO
TIME-VARIANT: no
STORAGE TYPE: integer
DOMAIN: >0
used to identify the sequential position of the channel
feature within a specific transect. Count the features from the
left bank (looking downstream) beginning with one. Start with one
again for each transect. For example, if the first transect contains
(starting at the left) a shelf, two bars, an island, and a shelf
then the data elements would be as follows:
TCTID CHFEAT FEATNO
1 shelf 1
1 bar 2
1 bar 3
1 island 4
1 shelf 5
Feature width
COLUMN-NAME: CFWIDTH
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: meters
DOMAIN: >=0.0
Feature-width remark
COLUMN-NAME: CFWIDRM
TIME-VARIANT: yes
STORAGE TYPE: char
DOMAIN: ref.list, see CHWIDRM
used to qualify the width measurement: FWIDTH
Feature substrate, dominant
COLUMN-NAME: DOMSUB
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: ref.list (see LBDOMSUB)
Feature substrate, subdominant
COLUMN-NAME: SUBSUB
REVISED: 4/94
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: ref.list (see LBDOMSUB)
%area, woody veg.
COLUMN-NAME: WVAREA
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 0
UNITS: percent area
DOMAIN: >=0.0
%area, herb. veg.
COLUMN-NAME: HVAREA
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 0
UNITS: percent area
DOMAIN: >=0.0
--------------------------------------------------------------------
GEOMORPHIC CHANNEL UNIT TABLE:
These data elements are both time-variant and repeat multiple times
in each sampling reach for each time. Each record in the table describes
observations made of a single geomorphic-channel unit at a sampling reach on a
specified date.
The geomorphic-channel-unit (GCU) sequence number differentiates the
records for the same GCU type found at the same sampling reach on the same
date.
Sampling-reach-identification number
COLUMN-NAME: REACHID
TIME-VARIANT: no
STORAGE TYPE: char
REVISED: 9/23/94, 11/4/96 (lengthened)
Geomorphic-channel-unit sequence number
COLUMN-NAME: GCUSEQ
TIME-VARIANT: no
STORAGE TYPE: integer
DOMAIN: >0
identifies occurence of different geomorphic-channel units
of the same type in the same sampling reach during a single visit. For
example, the first pool described for a given sampling-reach visit is assigned
sequence number '1'. The next pool described for the same sampling-reach visit
is assigned sequence number '2', and so on. The sequence number is
reset to one for a change of GCU, a change of sampling reach, or a different
visit date.
Sampling-reach-visit date
COLUMN-NAME: DATE
TIME-VARIANT: yes
STORAGE TYPE: date
DOMAIN: valid date
identifies date of visit to the sampling reach when the GCU's
were observed.
Geomorphic-channel-unit type
COLUMN-NAME: GCUTYPE
TIME-VARIANT: yes
STORAGE TYPE: char
UNITS: code
DOMAIN: ref.list
reference list includes : pool, riffle, run
Geomorphic-channel-unit length
COLUMN-NAME: GCULEN
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: yes
STORAGE TYPE: real
DECIMALS: 1
UNITS: meters
DOMAIN: >=0.0
--------------------------------------------------------------------
SAMPLING REACH TABLE:
Sampling-reach-id number
COLUMN-NAME: REACHID
TIME-VARIANT: no
STORAGE TYPE: char
REVISED: 9/23/94, 11/4/96 (lengthened)
Distance from station to downstream end of sampling reach
COLUMN-NAME: DSRCHEND
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: no
STORAGE TYPE: real
DECIMALS: 1
UNITS: meters
DOMAIN: DS=>0;US=<0
describe spatial extent of the sampling reach.
Distance from station to upstream end of sampling reach
COLUMN-NAME: USRCHEND
REVISED: 94/07/11 (from Units: feet)
TIME-VARIANT: no
STORAGE TYPE: real
DECIMALS: 1
UNITS: meters
DOMAIN: DS=>0;US=<0
describe spatial extent of the sampling reach.
Sampling-reach length is computed by:
absolute value of DSRCHEND minus USRCHEND.
DS-boundary-marker bank
COLUMN-NAME: DSBMBK
TIME-VARIANT: no
STORAGE TYPE: char
DOMAIN: ref. list: left, right, both
US-boundary-marker bank
COLUMN-NAME: USBMBK
TIME-VARIANT: no
STORAGE TYPE: char
DOMAIN: ref. list: left, right, both
Sampling-reach-visit date
COLUMN-NAME: DATE
TIME-VARIANT: yes
STORAGE TYPE: date
DOMAIN: valid date
Stream-type code
COLUMN-NAME: STRMTYP
REVISED: 4/94
TIME-VARIANT: yes
STORAGE TYPE: integer
DOMAIN: ref.list
1 = straight
2 = meandering
3 = braided
4 = channelized
5 = pool/riffle
Sampling-reach comments
COLUMN-NAME: REACHCOM
TIME-VARIANT: yes
STORAGE TYPE: char
Sampling-reach conditions as well as general comments about the sampling reach.
--------------------------------------------------------------------
SEGMENT DATA TABLE:
All these data are time-invariant attributes of a stream segment.
Study-unit abbrev.
COLUMN-NAME: REACHID
TIME-VARIANT: no
STORAGE TYPE: char
DOMAIN: >0
Stream length
COLUMN-NAME: SEGLENG
TIME-VARIANT: no
STORAGE TYPE: real
DECIMALS: 1
UNITS: miles
DOMAIN: >0.0
Upstream-end river mile
COLUMN-NAME: USRMILE
TIME-VARIANT: no
STORAGE TYPE: real
DECIMALS: 1
UNITS: miles
DOMAIN: > = 0
The difference between USRMILE and DSRMILE is the curvilinear stream
length. Channel sinuosity for the segment is the ratio of curvilinear
length to straight-line length. See DSRMILE and SEGLENTH.
Downstream-end river mile
COLUMN-NAME: DSRMILE
TIME-VARIANT: no
STORAGE TYPE: real
DECIMALS: 1
UNITS: miles
DOMAIN: > = 0
Upstream-end elevation
COLUMN-NAME: USELEV
TIME-VARIANT: no
STORAGE TYPE: real
DECIMALS: 0
UNITS: feet above NGVD
DOMAIN: above NGVD > 0.0; below NGVD < 0.0
Elevation of the stream channel at the upstream end of the segment.
Used to calculate segment slope.
Downstream-end elevation
COLUMN-NAME: DSELEV
TIME-VARIANT: no
STORAGE TYPE: real
DECIMALS: 0
UNITS: feet above NGVD
DOMAIN: above NGVD > 0.0; below NGVD < 0.0
Elevation of the stream channel at the downstream end of the segment.
Used to calculate segment slope.
Downstream link
COLUMN-NAME: DSTRLINK
TIME-VARIANT: no
STORAGE TYPE: integer
DOMAIN: > 1.0
The magnitude of the stream link of the next downstream confluence.
It is an additive number describing the spatial relation of a given
stream segment in a basin. For example, if two tributaries come
together, the segment immediately downstream has a link of 2. If an
additional tributary empties into a stream with a link number of 2,
then the resulting downstream link is 3. In contrast to stream
order, if to 1st order streams come together they form a 2nd order
stream. If an additional 1st order stream empties into the 2nd order
stream, their resulting downstream order is still 2. Stream order
changes only if like ordered streams come together and does not
account for the magnitude of lower order streams that may enter into
it.
Sideslope gradient
COLUMN-NAME: SIDEGRAD
TIME-VARIANT: no
STORAGE TYPE: real
UNITS: feet/mile
DECIMALS: 2
DOMAIN: > 0.0
Sideslope or valley gradient is the mean of three measures of the
slope of the valley segment. Elevations are determined from contour
crossings at the basin boundary and the channel along a line
perpendicular to the stream segment. The difference between the
elevations is determined and divided by the distance, to determine
the side-slope gradient. These measurements are made at three
positions (either bank) representative of the sideslope gradient
along the segment, and the mean of these three measurements is
recorded.
Determined using a 1:24,000-scale map.
Stream order
COLUMN-NAME: ORDER
TIME-VARIANT: no
STORAGE TYPE: integer
DOMAIN: >= 0.0
"0" can be used for artificial systems, else X > 0
Stream-order method
COLUMN-NAME: ORDERMD
TIME-VARIANT: no
STORAGE TYPE: char
DOMAIN: reference list
reference list indicates computation method as well as source-map
scale by concatenating identifiers from the following two lists.
Computation-method list: visual, vector, raster
Source-map-scale list: :24k, :48k, :100k, :250k
For example, stream order determined by visual inspection of a
1:24,000-scale map woud be qualified by storing 'manual:24k' in
ORDERMD.
channel sinuosity
COLUMN-NAME: SINUOSITY
TIME-VARIANT: no
STORAGE TYPE: real
DOMAIN: >=1
Column computed from curvilinear stream length divided by straight-line
stream length: (USRMILE - DSRMILE) / SEGLENG
channel-sinuosity method
COLUMN-NAME: SINUOSMD
TIME-VARIANT: no
STORAGE TYPE: char
DOMAIN: reference list
channel gradient
COLUMN-NAME: GRADIENT
TIME-VARIANT: no
STORAGE TYPE: real
DOMAIN: > 0.0
Column computed from bed-elevation change divided by straight-line stream
length: (USELEV - DSELEV) / SEGLENG
channel-gradient method
COLUMN-NAME: GRADIENTMD
TIME-VARIANT: no
STORAGE TYPE: char
DOMAIN: reference list