CCM – EDA

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Version 12 (modified by cedric, 15 years ago) (diff)
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Describing the CCM layers

table riversegments

gid: id (corresponds to line number)
wso1_id: id of the primary catchment drained by the river segment.
wso_id: id of the Sea-outlet to which the river segment belongs.
rvr_id: reference of the name of the river to which the segment belongs (often 0)
fromnode: upstream node
tonode: downstream node
strahler: the stream order hierarchy, the sizes range from a first order stream to the largest a 11th order stream
pfafstette: Pfafstetter code (?) of the river segment and its primary catchment
nextdownid: next segment identifyer downstream points to wso_id
longpath: identifies wether the river segment is part of the longest flow path in the River Basin (sea-outlet), Y(es) or NULL
maindrain_: ?
maindrain1: ?
length: length of a river segment in meters
cum_len: cumulated length of the upstream flow network, including the river segment itself (longest route ?)-in meters
pixels_100: area directly drained by the river segment (area of the primary catchment), in 100m*100m grid-cells
catchment_: ?
cont_pixel: area upstream of the From Node drained by the river segment in 100m*100m grid-cells
drain_km2: full area drained by the river segment and upstream area - in square kilometres
alt_gradie: relief Energy of the river segment : ((Elevation at From Node-Elevation at ToNode?)/Segment Length)*100 in per cent
burned: percentage grid-cells of the river segment having a high confidence level with respect to its geographical position
confidence: percentage of grid-cells of the river segment having a high confidence level with respect to its geographical position
window: here 2003
shape_leng: ?
the_geom: the_geom

table rivernodes

gid: ?
id: ?
wso_id: ?
source: ype of source Y= River source, N =No not river source, M = river mouth
len_tom: ?
num_seg: ?
elev: ?
x_laea: ?
y_laea: ?
"window": ?