Review Terms and Concepts

contour line

contour interval

index contour

elevation contour

datum

sea level

topographic map

x,y,z data examples

x,y location

z value

locating a point

number line

linear interpolation

two points lie on a straight line

plane (planar surface)

three points lie in a plane

triangulation of scattered data points

triangulation with linear interpolation

parallel contours on planes

interpretation after linear interpolation

examples of scattered x,y,z data

grid (grid model)

grid node

advantage of grid

grid algorithm (don't have to know names or details of algorithms, just that there are several to choose from)

color-filled contours

smooth slopes

hills

closed contours (closure)

ridges

saddles

noses

depressions

creeks and valleys

V-ing of contours at creeks

direction of flow from V-ing of contours

Lamar topography and elevation

Bone Canyon location

Bone Canyon topography description

Bone Canyon topography elevation range

Apache Canyon location

Apache Canyon topography description

Apache Canyon topography elevation range

alluvial fan