Table 9. Variable formats for WCGRID.ASC (File 5).

Column
Variable name
Start
End
Variable type
Variable description
ID 1 5 Integer System variable - grid cell
identifier.
ELAVG 6 13 Real Data variable - mean
elevation of all positive 5´
by 5´ grid cells within a given
0.25° grid cell; values
in meters.
ELMAX 14 21 Real Data variable - maximum
elevation of all positive 5´
by 5´ grid cells within a
given 0.25° grid cell; values
in meters.
ELMIN 22 29 Real Data variable - minimum
elevation of all positive 5´
by 5´ grid cells within a
given 0.25° grid cell; values
in meters.
ELNUM 30 33 Integer Data variable - number of 5´
by 5´ grid cells used in
calculating ELAVG,
ELMIN, and ELMAX for a
given 0.25° grid cell.
GL 34 37 Integer Data variable - ordinal value
indicative of the type and
resistance of the rocks
within a given 0.25° grid
cell to erosion.
GM 38 41 Integer Data variable - ordinal value
indicative of the type and
susceptibility of the
landforms within a given
0.25° grid cell to inundation
and erosion.
SLR 42 49 Real Data variable - relative sea-
level trend within a given
0.25° grid cell calculated
from tide-gauge station
measurements; values in
mm/year.
SLG 50 57 Real Data variable - long-term
geologic trend. This variable
is 0.0 for all 0.25° grid cells
with a relative sea-level
trend value and is included
for compatibility within this
series of NDPs.
SLC 58 65 Real Data variable - corrected
sea-level trend. Since the
geologic trend variable
contains values of 0.0, this
variable appears identical to
the relative sea-level trend
variable; and is included
only for compatibility within
this series of NDPs.
SLS 66 73 RealData variable - the local
uplift or subsidence trend.
The relative sea-level trend
(SLR) corrected for the
global eustatic rate of sea-
level rise (i.e., 1.5 mm/year).
SLYR 74 77 Integer Data variable - years of
record used in estimating the
sea-level trend for each
0.25° grid cell.

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ERAVG 1 8 Real Data variable - mean long-
term erosion trend for a
given 0.25° grid cell; values
in meters.
ERMAX 9 16 Real Data variable - maximum
long-term erosion trend for a
given 0.25° grid cell; values
in meters.
ERMIN 17 24 Real Data variable - minimum
long-term erosion trend for a
given 0.25° grid cell; values
in meters.
ERNUM 25 28 Integer Data variable - number of
3´, 7.5´, or 15´ grid
cells used in calculating ERAVG,
ERMIN, and ERMAX for a
given 0.25° grid cell.
TRAVG 29 36 Real Data variable - average of
the mean tide range for all
the gauge stations that occur
within a given 0.25° grid
cell (mean tide range is the
difference in height between
mean high water and mean
low water); values in meters.
TRMAX 37 44 Real Data variable - maximum
tide range measured for all
gauge stations that
occurred within a given
0.25° grid cell in 1988
(this value may be the
"spring" or "diurnal" tide
range, depending on
geographic location);
values in meters.
TRLVL 45 52 Real Data variable - the average
of the mean tide levels of
all the gauge stations that
occur within a given 0.25°
grid cell (mean tide level
is a plane midway between
mean low water and mean
high water in 1988).
Values were reckoned
from chart datums (i.e., the
West Coast Mean Low
Water Datum).
TRNUM 53 56 Integer Data variable - number of
tide gauge stations used in
calculating TRAVG,
TRMAX, and TRLVL for
a given 0.25° grid cell.
WHAVG 57 64 Real Data variable - 20-year
mean wave height
experienced within each
0.25o grid cell; values in
meters.
WHMAX 65 72 Real Data variable - maximum
significant wave height for
each 0.25° grid cell; values
in meters.
WHSD 73 80 Real Data variable - standard
deviation of the 20-year
mean wave height
experienced within each
0.25° grid cell; values in
meters.