月 日 ダム水位
(EL m)
有効
貯水率
(%) 
  放流量
(m3/s) 
  日雨量
(mm/日)
 備考
6/13 501.81 50.5 1.80 1  
6/12 502.41 51.7 1.80 0  
6/11 502.73 52.9 1.80 0  
6/10 503.04 54.1 1.84 1  
6/9 503.36 55.4 1.90 0  
6/8 503.69 56.7 1.90 0  
6/7 504.00 57.9 1.70 0  
6/6 504.23 58.8 1.50 0  
6/5 504.44 59.7 1.50 0  
6/4 504.63 60.5 1.50 3  
6/3 504.82 61.2 1.58 1  
6/2 505.01 62.0 1.70 17  
6/1 505.25 63.0 1.70 0  
5/31 505.49 64.0 1.54 3  
5/30 505.68 64.8 1.50 0  
5/29 505.85 65.5 1.24 4  
5/28 505.87 65.6 1.36 22  
5/27 506.10 66.6 2.00 0  
5/26 506.42 68.0 2.00 0  
5/25 506.73 69.3 2.00 0  
5/24 507.00 70.5 1.53 0  
5/23 507.15 71.1 1.38 0  
5/22 507.33 71.9 1.50 0  
5/21 507.50 72.7 1.50 0  
5/20 507.65 73.3 1.95 17  
5/19 507.99 74.8 2.69 0  
5/18 508.42 76.8 2.69 0  
5/17 508.82 78.6 2.37 0  
5/16 509.12 80.0 2.23 1  
5/15 509.44 81.5 2.40 0  
5/14 509.77 83.0 2.40 0  
5/13 510.07 84.5 2.87 21  
5/12 510.54 86.7 3.39 0  
5/11 511.05 89.2 3.40 0  
5/10 511.69 92.3 2.99 0  
5/9 511.96 93.7 3.00 1  
5/8 512.32 95.5 2.29 1  
5/7 512.53 96.5 2.00 7  
5/6 512.72 97.5 2.00 0  
5/5 512.91 98.5 1.66 0  
5/4 513.03 99.1 1.50 0  
5/3 513.13 99.6 1.50 0  
5/2 513.20 100.0 1.40 0  
5/1 513.21 100.0 1.46 0  
4/30 513.20 100.0 1.17 0  
4/29 513.21 100.0 1.41 0  
4/28 513.21 100.0 1.57 0  
4/27 513.21 100.0 1.67 0  
4/26 513.21 100.0 1.50 0  
4/25 513.20 100.0 1.51 0  
4/24 513.20 100.0 1.73 7  
4/23 513.20 100.0 1.67 0  
4/22 513.20 100.0 1.77 0  
4/21 513.20 100.0 1.88 0  
4/20 513.20 100.0 1.80 0  
4/19 513.20 100.0 1.97 0  
4/18 513.20 100.0 2.12 0  
4/17 513.21 100.0 2.52 2  
4/16 513.21 100.0 2.62 0  
4/15 513.22 100.1 3.05 0  
4/14 513.22 100.1 3.05 0  
4/13 513.22 100.1 3.16 0  
4/12 513.22 100.1 3.25 0  
4/11 513.22 100.1 3.37 0  
4/10 513.23 100.1 4.89 0  
4/9 513.26 100.3 8.58 26  
4/8 513.24 100.2 5.90 5  
4/7 513.24 100.2 5.83 0  
4/6 513.23 100.1 4.12 0  
4/5 513.23 100.1 3.95 0  
4/4 513.23 100.1 4.47 1  
4/3 513.19 99.9 2.97 8 満水位
4/2 513.05 99.2 2.83 0  
4/1 512.77 97.8 3.25 3  
3/31 512.54 97.0 4.02 1  
3/30 512.29 95.3 4.02 0  
3/29 511.77 92.7 2.72 11  
3/28 511.42 91.0 2.08 0  
3/27 511.19 89.9 2.14 1  
3/26 510.60 87.0 1.54 40  
3/25 510.15 84.8 1.30 0  
3/24 509.99 84.1 1.29 0  
3/23 509.99 84.1 1.29 2  
3/22 510.01 84.2 1.29 0  
3/21 509.99 84.1 1.08 8  
3/20 509.85 83.4 0.80 5  
3/19 509.67 82.6 0.79 0  
3/18 509.40 81.3 0.86 5  
3/17 509.07 79.8 0.95 7  
3/16 508.89 78.9 0.95 0  
3/15 508.79 78.5 0.93 0  
3/14 508.76 78.3 0.94 3  
3/13 508.76 78.3 0.99 3  
3/12 508.73 78.2 0.95 17  
3/11 508.71 78.1 0.93 0  
3/10 508.73 78.2 0.99 0  
3/9 508.73 78.2 0.99 6  
3/8 508.71 78.1 0.94 1  
3/7 508.69 78.0 0.97 0  
3/6 508.68 78.0 1.00 8  
3/5 508.64 77.8 1.00 7  
3/4 508.60 77.6 1.07 9  
3/3 508.58 77.5 1.19 9  
3/2 508.57 77.5 1.19 5  
3/1 508.52 77.2 1.09 15