## 4 Results and Discussion
### Water Balance Evaluation between 2020 and 2029
#### 4.7.2 Monthly Water Balance without the Consideration of Ecological Water Requirements  
Table 25 reports the results of the monthly water balance without the consideration of ecological water requirements in terms of surplus and deficit under the dry and wet year scenarios in the normal and new normal conditions between 2020 and 2029. As indicated by the results in Table 25, under the dry year scenario in the normal condition, the monthly water balance reveals a deficit from December to May. It varies from \(-43.07\) million m\({}^{3}\) in March to \(-5.91\) million m\({}^{3}\) in December. However, the monthly water balance indicates a surplus from June to November, varying from 4.91 million m\({}^{3}\) in November to 68.44 million m\({}^{3}\) in October. Under the dry year scenario in the new normal \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline \multirow{2}{*}{**Year**} & \multicolumn{2}{c}{**Water Supply (Million m\({}^{3}\))**} & \multicolumn{2}{c}{**Water Demand (Million m\({}^{3}\))**} & \multicolumn{2}{c}{**Dry Year**} & \multicolumn{2}{c}{**Wet Year**} \\ \cline{2-10}  & **Dry Year** & **Wet Year** & **Normal** & **New Normal** & **Normal** & **New Normal** & **Normal** & **New Normal** \\ \hline
2020 & 505.01 & 1225.48 & 475.86 & 461.53 & 29.15 & 43.48 & 749.61 & 763.95 \\
2021 & 505.73 & 1226.49 & 469.19 & 457.65 & 36.54 & 48.08 & 757.30 & 768.84 \\
2022 & 506.34 & 1227.28 & 466.45 & 457.67 & 39.88 & 48.66 & 760.82 & 769.60 \\
2023 & 507.41 & 1228.55 & 462.31 & 456.19 & 45.10 & 51.21 & 766.24 & 772.35 \\
2024 & 508.28 & 1229.18 & 460.77 & 460.77 & 47.51 & 47.51 & 768.40 & 768.40 \\
2025 & 510.06 & 1231.38 & 455.62 & 455.62 & 54.44 & 54.44 & 775.76 & 775.76 \\
2026 & 517.83 & 1238.32 & 452.48 & 452.48 & 65.35 & 65.35 & 785.84 & 785.84 \\
2027 & 519.55 & 1240.31 & 448.98 & 448.98 & 70.57 & 70.57 & 791.32 & 791.32 \\
2028 & 520.22 & 1240.94 & 447.29 & 447.29 & 72.93 & 72.93 & 793.65 & 793.65 \\
2029 & 521.79 & 1242.08 & 442.09 & 442.09 & 79.70 & 79.70 & 799.98 & 799.98 \\ \hline Average & 512.22 & 1233.00 & 458.11 & 454.03 & 54.12 & 58.19 & 774.89 & 778.97 \\ \hline \hline \end{tabular}
\end{table} 
Table 24: The annual water supply and demand balance evaluation without considering ecological water requirements between 2020 and 2029. \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline \multirow{2}{*}{**Month**} & \multicolumn{2}{c}{**Water Supply (Million m\({}^{3}\))**} & \multicolumn{2}{c}{**Water Demand (Million m\({}^{3}\))**} & \multicolumn{2}{c}{**Water Balance (Surplus or Deficit) (Million m\({}^{3}\))**} \\ \cline{2-10}  & **Dry Year** & **Wet Year** & **Normal** & **New Normal** & \multicolumn{2}{c}{**Normal**} & \multicolumn{2}{c}{**New Normal**} & \multicolumn{2}{c}{**Normal**} & \multicolumn{2}{c}{**New Normal**} \\ \hline January & 10.61 & 45.31 & 41.51 & 41.05 & \(-30.89\) & \(-30.44\) & 3.80 & 4.26 \\ February & 3.92 & 19.46 & 40.78 & 40.36 & \(-36.86\) & \(-36.44\) & \(-21.32\) & \(-20.89\) \\ March & 1.84 & 4.95 & 44.91 & 44.47 & \(-43.07\) & \(-42.63\) & \(-39.97\) & \(-39.52\) \\ April & 20.24 & 2.80 & 41.35 & 40.99 & \(-21.11\) & \(-20.76\) & \(-38.55\) & \(-38.20\) \\ May & 16.10 & 82.32 & 38.04 & 37.78 & \(-21.94\) & \(-21.68\) & 44.28 & 44.54 \\ June & 65.57 & 106.19 & 37.23 & 36.89 & 28.33 & 28.67 & 68.95 & 69.29 \\ July & 82.69 & 97.82 & 37.61 & 37.37 & 45.09 & 45.32 & 60.21 & 60.45 \\ August & 72.22 & 148.54 & 37.86 & 37.62 & 34.36 & 34.60 & 110.68 & 110.92 \\ September & 66.16 & 239.62 & 33.39 & 33.15 & 32.77 & 33.01 & 206.24 & 206.48 \\ October & 102.26 & 286.47 & 33.82 & 33.49 & 68.44 & 68.77 & 252.65 & 252.97 \\ November & 38.75 & 140.62 & 33.85 & 33.53 & 4.91 & 5.22 & 106.77 & 107.08 \\ December & 31.86 & 58.92 & 37.77 & 37.33 & \(-5.91\) & \(-5.47\) & 21.15 & 21.58 \\ \hline Total & 512.22 & 1233.00 & 458.11 & 454.03 & 54.12 & 58.19 & 774.89 & 778.97 \\ \hline \hline \end{tabular}
\end{table}