ACTIVITY TY 11.2 Introduction to Stream Processes and Landscapes Name Date: TOPO

Question

ACTIVITY TY 11.2 Introduction to Stream Processes and Landscapes Name Date: TOPOGRAPHIC MAP REVIEW FOR DRAINAGE BASIN MAPPING a. This map is contoured in feet The contour interval is: feet. b. The elevation of point X is: c. The elevation of point B is: d. The elevation of point A is: e. The distance from A to B is: f. The gradient from A to B is: g. Lightly shade or color the area feet. feet. -feet. mile(s). feet per mile. inside each closed contour that represents a hilltop, then draw a dashed line to indicate the divide that surrounds Trout Run drainage basin. h. Trout Run flows (drains dowr hill) in what direction? 2. Imagine that drums of oil were empsied (illegally) at location X above. Is ic likcly that the oil would wash downhill into Trour Run? Explain your neasoning B. Refer to the topographic map of the Lake Sout quadrangle. Kansas (FIGURE 11.4), This arca is located within the Great Plains siographic prosince and the Mississippi River Drainage Basin. The Great Plains is a relaxively flaz grassland that extcnds he Rocky Mk untains to the Interior Lowlands of North America. Ins an ancent upland surface that tlts eastward from an clevation of about $500 fet along its western boundary with the Rocky Mountains to abour 2000 feet above sea level wosem Kanss. The upland is the top of s wedgs of sediment that was weathered and arried eastrward from the Rocky Moumtains by a braided stream sysicn thar existed from Late Creraceous to Pliocene time (65-2.6 Ma). Modern streams e western Kansas drain eastwand acros the Gireat Pains and cut channels into the ancient upland surface. Tiny modern ributaries mernge so form larger httpel/nat Downstream" tab, zoom in t stream is pat in westenm streams that eventually flow into the Mississippi River. You can view this in Sereanser go to "Trace stream in wessern Kansas (KS), and click on the stream. The sed line will show how the adas.gow/streamee/Streamer/welcome.html and dick on the " Go to Map panel. Then click on the soom in to any s f a suream drainage syscme Kansas on the ancient upland surface 299

Explanation / Answer

Answer a 1: The interval of contour is 20 Feet

Explanation: The contour interval is defined as the difference in value on one contour line to next contour line for eg : if the contour interval is 20 ft then my hundred ft contour is next to either 120ft contour or 80ft contour depend upon whether you moving upslope or downslope.

Answer b 2: the value of X is 240ft

Explanation: X is adjacent to 200ft contour, however, there is one contour between them and we know contour interval is 20m so 200+20+20= 240

Answer C 3: B is at elevation of 100ft

Explanation: B lie on the contour of 100ft so its value must be 100ft

Answer D 4: A is at elevation of 180ft

Explanation : A is four contour away from B and we are moving upward so 100Ft + 4*(contour interval) = 100+80=180ft

Answer e 5 : approximately 5 mile  

Explanation: Distance between A and B is 7.5 cm and on your map sheet, the horizontal scale is 1.5 cm = 1 mile so by unitary method (1/1.5) * 7.5 = 5 miles

Answer f 6 : 80ft/mile

Explanation : distance between A and B is 1 mile and change in elevation is 80Ft so gradient = height/ horizontal distance = 80 ft/1mile

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