The lines bend upward to show that the stream is running the opposite way. (For example, if the lines are pointing north, the stream is running south)
**Contour lines bend toward the source when they go over a river/stream.
A stream valley is discernable on a topographic map by lines of equal elevation that run parallel to each other where the stream valley is on level terrain and converge in a "v" shape where the stream valley is on a slope. Parallel equal elevation lines may be nested where the difference in elevation between the edges and the center of the valley is great enough. A single countour line may run along the middle of the stream valley where it is on level terrain, but not always.
The contour lines will run parallel on both sides of the valley. The lowest contours will be on the valley floor. As the valley floor gets higher towards the source of the river, some contours may cross it.
Whether they bend or not depends on the actual course of the valley.
V shaped contour lines run up hill making it a valley.
If the contour lines are far apart, then that indicates the land has a gentle slope (low slope).
it has a shape that looks like a fat man jumping
Downhill. Water always flows downhill.
A contour map shows lines which connect areas equal in height. These lines are called contours and should be labelled to show the height that each contour represents. A stream flows downhill, this is due to gravity. Thus, to determine which way a stream flows, find contours, at least two, that intersect the path of the stream, then look at the heights these contours represents(their labels). The stream will flow from the contour labelled with the higher number towards the contour labelled with the lower number. PS. sometimes not all the contours are numbered, but only say every fith contour is numbered, then you can assume that all contours are equally incremented i.e. the height difference from one contour to the next stays equal.
The point of the V is probably where there is a stream, river or wash.
The point of the V is probably where there is a stream, river or wash.
Hachured contour lines are contour lines with ticks pointing downslope that indicate a depression on a topographic map.
The numbers of contour lines indicate altitude or elevation along that line.
Water flows downhill. Contour lines show the slope of the landscape, and the direction a stream must flow.
indicated with different kind of contour numbers , which are showed in brown curved lines
Upstream
contour lines all ways point up hill or up stream
contour lines bend in a V shape pointing uphill because it flows the other direction
Because we know that water cannot flow uphill, the flow must go from higher contours to lower ones.
- Contour lines never cross. All lines on a contour line represent one elevation.- The spacing of contour lines depends on slope characteristics. Contour lines that are close together show a steep slope. Contour lines that are far apart show a gentle slope.- Contour lines that cross a valley or a stream are V shaped. The C points toward the area of the highest elevation. If a stream or river flows through the valley, the V points upstream.-The tops of the hills, mountains, and depressions are shown by closed circles. Depressions are marked with short, straight lines inside the circle that point down slope to the depression.
Topographical Map
you can determine the direction a stream flows on a contour map by seeing which way the contour lines bend.
A contour map shows lines which connect areas equal in height. These lines are called contours and should be labelled to show the height that each contour represents. A stream flows downhill, this is due to gravity. Thus, to determine which way a stream flows, find contours, at least two, that intersect the path of the stream, then look at the heights these contours represents(their labels). The stream will flow from the contour labelled with the higher number towards the contour labelled with the lower number. PS. sometimes not all the contours are numbered, but only say every fith contour is numbered, then you can assume that all contours are equally incremented i.e. the height difference from one contour to the next stays equal.
With eight contour lines that follow the upward elevations in increments of 10 feet.
The point of the V is probably where there is a stream, river or wash.