1) Look for 120 in tiny pink letters (it\'s just past the sharpest bend in river
ID: 292283 • Letter: 1
Question
1) Look for 120 in tiny pink letters (it's just past the sharpest bend in river...close the the "S" in Sutter Avenue) Now find find the 115' contour line crossing the river, downstream, east of Jenny Lind Bend. Measure the distance between those two points with a ruler (or The scale of this map is such that 1 inch=2400 feet). What is the percent slope in this stretch?
2) What is the gradient along the same stretch of the Sacramento River _______________ft/mi.
3) What is the percent slope from where the 115’ contour crosses the river at mile 195 to the mouth of the river (where the river ends at both 0’ elevation and mile 0)? ______________%
4)What is the contour interval on this map?
5)What is the total relief?
Explanation / Answer
IN GIVEN TOPOGRAPHIC MAP, I have littile confusion about the point at where you want measure the distance between those two points but i can help you as given process that how to calculate the distance between those 2 points first you should mark those point as A and B then by using scale find the distance between those point in inch then after find it multiply by 2400 becouse as given scale for the toposheet is 1 inch=2400 feet.
Now you can find the percent slope, percent slope is nothing but likely same as gradient Convert the rise and run to the same units and then divide the rise by the run. Multiply this number by 100 and you have the percentage slope. For instance, 5" rise divided by 26" run = ..192 x 100 = an 19.2% slope.
for gradient you should first find difference in elevation of those 2 poins and next find the distance between those 2 points then divide by difference in elevation of those 2 poins to distance between those 2 points,will give the gradient but while calculation please carefully solve dont confuse with units.
ANSWER 4: Contour interval is 5'
ANSWER 5: Total relief is 25' (Total relief is the difference between the highest and lowest points in an area in map )
NOTE :IF YOU CAN TELL ME MENTION POINT WITH HELP OF HIGHLIGHT MARK OR YOU MAY GIVE TO ME THE VALUES , SURELY I WILL FULLY SOLVE THE PROBLEMS. AND I HOPE YOU WILL GET BENIFIT FROM MY EXPLAINATION AND IF ANY DOUBT PLEASE COMMENT I WILL HELP YOU.
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