a. On the map or on a tracing overlay. Carefully plot the elevation…

Question Answered step-by-step a. On the map or on a tracing overlay. Carefully plot the elevation… a. On the map or on a tracing overlay.  Carefully plot the elevation of the water table at each well. Wells Y5, and R84 have been recorded as examples.  Mark small and clear and as close to the dot (represents the actual well).b. practice drawing contour lines on the graph below.  Each of the dots   represents the elevation of the water table as determined from well data.  Draw    in contour lines for elevations: 515, 510, 505, 500, 495, 490.  Recall that contour lines cannot cross each other.  Each line represents the same elevation and    therefore they may curve around and between the numbers. Elevation 490 is not continuous on the map and 515 is pre-drawn. c.  Contour the water table elevation on the map or overlay.  Using a contour interval of one foot each.  The contour lines you have drawn are called equipotential lines and show the general location of the water table.  Equipotential lines must increase/decrease in order and can never cross each other.  Once checked for errors, color over the lines with a colored pencil. Contour elevations 604, 603, 602, and 588 have been drawn as an example.d. The direction of groundwater flow is generally perpendicular to the equipotential lines, moving from higher to lower elevations.  They are not necessarily straight lines, as water will flow in a curved path as long as it is moving generally down elevation.  Using a second contrasting color pencil, draw arrows  (flow lines) at several places on the map to show the directions of the groundwater movement.  Figure 8 is an example of how curved groundwater flow lines can look.Image transcription textGROUND – SURFACE elevations and water table depthsfor selected wells at the military base. Source USGSWater Resources Investigation Report 83-… Show more… Show more  Earth Science Science Geology EES 2001 Share QuestionEmailCopy link Comments (0)