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Page 1: TOPOGRAPHIC MAP A MAP WHICH SHOWS ELEVATION OF THE LAND WITH THE USE OF CONTOUR LINES, SHAPES, AND SYMBOLS CONTOUR LINES LINES DRAWN TO CONNECT POINTS
Page 2: TOPOGRAPHIC MAP A MAP WHICH SHOWS ELEVATION OF THE LAND WITH THE USE OF CONTOUR LINES, SHAPES, AND SYMBOLS CONTOUR LINES LINES DRAWN TO CONNECT POINTS

TOPOGRAPHIC MAP

A MAP WHICH SHOWS ELEVATION OF THE LAND WITH THE USE OF CONTOUR LINES, SHAPES , AND SYMBOLS

CONTOUR LINES

LINES DRAWN TO CONNECT POINTS OF THE SAME ELEVATION

Page 3: TOPOGRAPHIC MAP A MAP WHICH SHOWS ELEVATION OF THE LAND WITH THE USE OF CONTOUR LINES, SHAPES, AND SYMBOLS CONTOUR LINES LINES DRAWN TO CONNECT POINTS

ELEVATION

CONTOUR INTERVAL- THE DIFFERENCE IN ELEVATION BETWEEN TWO CONSECUTIVE CONTOUR LINES

INDEX CONTOUR- EVERY FOURTH OR FIFTH LINE WHICH IS DARKENED FOR EASY READING

Page 4: TOPOGRAPHIC MAP A MAP WHICH SHOWS ELEVATION OF THE LAND WITH THE USE OF CONTOUR LINES, SHAPES, AND SYMBOLS CONTOUR LINES LINES DRAWN TO CONNECT POINTS

STEEPNESS OF SLOPES

CLOSER CONTOUR LINES = STEEP SLOPES

WELL-SPACED CONTOUR LINES = FLATTER, GENTLE SLOPES

THE SHAPE OF THE LAND AT VARIOUS HEIGHTS

Page 5: TOPOGRAPHIC MAP A MAP WHICH SHOWS ELEVATION OF THE LAND WITH THE USE OF CONTOUR LINES, SHAPES, AND SYMBOLS CONTOUR LINES LINES DRAWN TO CONNECT POINTS

( SINKHOLE, QUARRY, MINE)

MEASURED USING A HACHURE LINE

**FIRST DEPRESSION LINE TAKES THE VALUE OF THE CONTOUR LINE SURROUNDING IT

THE “WHISKERS” POINT TO THE LOWER ELEVATION

Page 6: TOPOGRAPHIC MAP A MAP WHICH SHOWS ELEVATION OF THE LAND WITH THE USE OF CONTOUR LINES, SHAPES, AND SYMBOLS CONTOUR LINES LINES DRAWN TO CONNECT POINTS

A BENCHMARK POINT IS A LOCATION WHOSE EXACT ELEVATION IS KNOWN AND IS NOTED ON A BRASS ALLUMINUM PLATE ( BM )

Page 7: TOPOGRAPHIC MAP A MAP WHICH SHOWS ELEVATION OF THE LAND WITH THE USE OF CONTOUR LINES, SHAPES, AND SYMBOLS CONTOUR LINES LINES DRAWN TO CONNECT POINTS

A  MAXIMUM ELEVATION- HIGHEST POSSIBLE ELEVATION

FIGURE OUT WHAT THE NEXT POSSIBLE CONTOUR LINE WOULD BE THEN SUBTRACT 1 UNIT

MINIMUM ELEVATION- LOWEST POSSIBLE ELEVATION

THE NEXT POSSIBLE DEPRESSION LINE, THEN PLUS 1 UNIT

Page 8: TOPOGRAPHIC MAP A MAP WHICH SHOWS ELEVATION OF THE LAND WITH THE USE OF CONTOUR LINES, SHAPES, AND SYMBOLS CONTOUR LINES LINES DRAWN TO CONNECT POINTS

RIVERS CUT A VALLEY AND CAUSE CONTOUR LINES TO FORM A V-SHAPE POINTING TO THE SOURCE OF THE STREAM (UPSTREAM).

GRADIENT = CHANGE IN ELEVATION (ft)

DISTANCE (mi)

Page 9: TOPOGRAPHIC MAP A MAP WHICH SHOWS ELEVATION OF THE LAND WITH THE USE OF CONTOUR LINES, SHAPES, AND SYMBOLS CONTOUR LINES LINES DRAWN TO CONNECT POINTS

RELIEF- DIFFERENCE IN ELEVATION

RELIEF MAP – RAISED MAP WHICH SHOWS DIFFERENCE IN ELEVATION(3-D)

PROFILE- SIDE VIEW OF THE SHAPE OF THE LAND ON A TOPOGRAPHIC MAP


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