Question

Part C

According to Wikipedia, the Catskills average 42 inches of rain and 44 inches of snow per year. Assume that (snow depth times 0.1) is the equivalent rain depth. Also assume that these averages apply, homogeneously, to your watershed. Calculate the volume of precipitation water that enters your watershed in an average year.

 

Part D

Estimate a Water-Table Ratio for this region of upstate New York. R is the linear recharge rate (length/time). Use H = 5,000 feet for the thickness of the Upper Devonian here, and 10-7 m/s for the hydraulic conductivity.

 

For L, estimate the spacing of rivers. Since the rivers flow close to N-S, draw an E-W line across your map (or just select a grid line) and estimate L as the length of your line divided by the number of rivers that it intersects.

 

For D, take the height of the highest peaks (they’re given in feet on the map) minus the elevation of the Pepacton Reservoir. The contour interval is 100 feet.

 

Is the water table likely to be recharge dominated or topography dominated, based on your Water-Table Ratio?



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Answer 1

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