Skip to Main Content

It can be clearly seen that the greater the fluctuation of the water level, the lower the performance of the model. The lower performance belongs to piezometer numbers 8, 11, 12 and 21, and may be driven by their situation. For example, piezometer No. 8 is located near the road and belongs to a tubing manufacturer that uses groundwater for its production, and therefore the water level experiences oscillation. Also piezometers numbers 11 and 12 are near the river and perhaps affected by river fluctuations. Thus it can be inferred that the model performs with lower accuracy and more error. Table 3 also shows the results of the predicted water level for the 13 piezometers and their Thiessen polygon area used for groundwater budget computing.

Table 3

Twelve-month ahead predicted water table by WANN-GP

No.aPolygon areaH1bH2H3H4H5H6H7H8H9H10H11H12
437,212.86 1,332.04 1,332.1 1,332.15 1,332.16 1,332.12 1,332.11 1,332.08 1,331.97 1,331.96 1,331.93 1,331.94 1,331.93 
2,143,656.4 1,291.8 1,291.75 1,291.95 1,292.18 1,292.35 1,292.42 1,292.33 1,292.45 1,292.58 1,292.28 1,292.25 1,292.18 
4,218,328.7 1,321.21 1,321.21 1,321.4 1,321.51 1,321.53 1,321.58 1,321.59 1,321.69 1,321.7 1,321.63 1,321.62 1,321.61 
2,943,760.8 1,281.19 1,281.06 1,281.17 1,281.15 1,281.02 1,280.98 1,280.99 1,281.11 1,281.13 1,281.09 1,281.12 1,281.05 
11,785,231 1,272.09 1,271.68 1,272.58 1,274.7 1,275.51 1,275.21 1,275.18 1,273.75 1,272.97 1,272.81 1,271.8 1,271.7 
3,642,347.3 1,357.56 1,354.21 1,349.95 1,349.48 1,351.11 1,351.28 1,357.96 1,358.41 1,358.39 1,358.37 1,358.42 1,357.86 
10 7,371,027.7 1,437.31 1,437.35 1,438.61 1,438.87 1,439.00 1,438.12 1,438.45 1,438.78 1,438.73 1,438.61 1,437.05 1,436.63 
11 11,164,588 1,334.75 1,334.65 1,334.9 1,335.4 1,336.12 1,336.92 1,337.36 1,337.44 1,337.22 1,337 1,335.51 1,334.92 
12 9,018,546.3 1,385.45 1,386.59 1,386.27 1,387.96 1,388.85 1,389.85 1,390.59 1,391.42 1,391.32 1,391.19 1,386.03 1,385.79 
14 7,413,532 1,283.02 1,283.24 1,283.89 1,284.57 1,285.14 1,285.62 1,285.27 1,285.11 1,284.84 1,284.76 1,284.17 1,283.94 
19 6,827,615.3 1,278.25 1,278.23 1,278.22 1,278.2 1,277.57 1,275.27 1,275.35 1,275.39 1,275.38 1,275.33 1,275.27 1,275.21 
21 5,162,200.5 1,416.43 1,415.73 1,415.45 1,415.68 1,415.83 1,416.89 1,416.91 1,416.7 1,416.63 1,416.57 1,415.84 1,416.53 
23 9,524,845.5 1,275.44 1,275.32 1,275.26 1,275.97 1,276.26 1,276.77 1,277.23 1,277.00 1,276.9 1,276.86 1,276.09 1,275.97 
No.aPolygon areaH1bH2H3H4H5H6H7H8H9H10H11H12
437,212.86 1,332.04 1,332.1 1,332.15 1,332.16 1,332.12 1,332.11 1,332.08 1,331.97 1,331.96 1,331.93 1,331.94 1,331.93 
2,143,656.4 1,291.8 1,291.75 1,291.95 1,292.18 1,292.35 1,292.42 1,292.33 1,292.45 1,292.58 1,292.28 1,292.25 1,292.18 
4,218,328.7 1,321.21 1,321.21 1,321.4 1,321.51 1,321.53 1,321.58 1,321.59 1,321.69 1,321.7 1,321.63 1,321.62 1,321.61 
2,943,760.8 1,281.19 1,281.06 1,281.17 1,281.15 1,281.02 1,280.98 1,280.99 1,281.11 1,281.13 1,281.09 1,281.12 1,281.05 
11,785,231 1,272.09 1,271.68 1,272.58 1,274.7 1,275.51 1,275.21 1,275.18 1,273.75 1,272.97 1,272.81 1,271.8 1,271.7 
3,642,347.3 1,357.56 1,354.21 1,349.95 1,349.48 1,351.11 1,351.28 1,357.96 1,358.41 1,358.39 1,358.37 1,358.42 1,357.86 
10 7,371,027.7 1,437.31 1,437.35 1,438.61 1,438.87 1,439.00 1,438.12 1,438.45 1,438.78 1,438.73 1,438.61 1,437.05 1,436.63 
11 11,164,588 1,334.75 1,334.65 1,334.9 1,335.4 1,336.12 1,336.92 1,337.36 1,337.44 1,337.22 1,337 1,335.51 1,334.92 
12 9,018,546.3 1,385.45 1,386.59 1,386.27 1,387.96 1,388.85 1,389.85 1,390.59 1,391.42 1,391.32 1,391.19 1,386.03 1,385.79 
14 7,413,532 1,283.02 1,283.24 1,283.89 1,284.57 1,285.14 1,285.62 1,285.27 1,285.11 1,284.84 1,284.76 1,284.17 1,283.94 
19 6,827,615.3 1,278.25 1,278.23 1,278.22 1,278.2 1,277.57 1,275.27 1,275.35 1,275.39 1,275.38 1,275.33 1,275.27 1,275.21 
21 5,162,200.5 1,416.43 1,415.73 1,415.45 1,415.68 1,415.83 1,416.89 1,416.91 1,416.7 1,416.63 1,416.57 1,415.84 1,416.53 
23 9,524,845.5 1,275.44 1,275.32 1,275.26 1,275.97 1,276.26 1,276.77 1,277.23 1,277.00 1,276.9 1,276.86 1,276.09 1,275.97 

aNo. = piezometer number.

bH1…H12 = water level from 1st month to 12th month.

Close Modal

or Create an Account

Close Modal
Close Modal