薗原ダム(そのはらだむ)
水系
利根川
河川
片品川
管理者
利根川ダム統合管理事務所
所在地
群馬県沼田市利根町園原
目的
FNP
型式
重力式コンクリート
洪水調節方式
自然調節
堤高(m)
76.5
堤頂長(m)
127.6
堤体積(千m3)
173.0
最低水位
(m)
(m)
543.50
平常時
最高貯水位(m)
最高貯水位(m)
564.00
洪水時
最高水位(m)
最高水位(m)
565.00
緊急放流(異常洪水時防災操作)
判断水位(m)
判断水位(m)
561.80
設計
最高水位(m)
最高水位(m)
565.00
予備放流水位
(m)
(m)
-
洪水貯留準備水位
(m)
(m)
-
洪水貯留操作開始流量
(m3/s)
(m3/s)
1,000.00
計画最大放流量
(m3/s)
(m3/s)
1,550.00
流域面積
(km2)
(km2)
607.60
雨量観測所情報
現在の状況(2026/09/29 05:30)
貯水位
!552.20
m
全流入量
!!18.96
m³/s
全放流量
!!18.96
m³/s
10分雨量
!!!0.60
mm
時間雨量
!!!1.30
mm
累加雨量
!!19.10
mm
| 時刻 | 貯水位 (m) |
全流入量 (m³/s) |
全放流量 (m³/s) |
時間 雨量 (mm) |
累加 雨量 (mm) |
|---|---|---|---|---|---|
| 09/29 05:00 | 552.20 | 18.96 | 18.96 | 1.30 | 17.30 |
| 09/29 04:00 | 552.20 | 18.96 | 18.96 | 1.80 | 16.00 |
| 09/29 03:00 | 552.20 | 18.96 | 18.96 | 1.20 | 14.20 |
| 09/29 02:00 | 552.20 | 17.29 | 18.96 | 0.30 | 13.00 |
| 09/29 01:00 | 552.21 | 18.96 | 18.96 | 1.10 | 12.70 |
| 09/29 00:00 | 552.21 | 17.30 | 18.96 | 0.80 | 11.60 |
| 09/28 23:00 | 552.22 | 18.97 | 18.97 | 0.90 | 10.80 |
| 09/28 22:00 | 552.22 | 18.97 | 18.97 | 0.10 | 9.90 |
| 09/28 21:00 | 552.22 | 17.30 | 18.97 | 0.70 | 9.80 |
| 09/28 20:00 | 552.23 | 18.97 | 18.97 | 0.50 | 9.10 |
| 09/28 19:00 | 552.23 | 18.97 | 18.97 | 0.40 | 8.60 |
| 09/28 18:00 | 552.23 | 18.97 | 18.97 | 0.80 | 8.20 |
| 09/28 17:00 | 552.23 | 18.97 | 18.97 | 0.00 | 7.40 |
| 09/28 16:00 | 552.23 | 18.97 | 18.97 | 0.00 | 7.40 |
| 09/28 15:00 | 552.23 | 18.97 | 18.97 | 0.00 | 7.40 |
| 09/28 14:00 | 552.23 | 17.03 | 18.97 | 0.00 | 7.40 |
| 09/28 13:00 | 552.24 | 18.97 | 18.97 | 0.20 | 7.40 |
| 09/28 12:00 | 552.24 | 18.97 | 18.97 | 0.00 | 7.20 |
| 09/28 11:00 | 552.24 | 17.30 | 18.97 | 0.00 | 7.20 |
| 09/28 10:00 | 552.25 | 18.97 | 18.97 | 2.70 | 7.20 |
| 09/28 09:00 | 552.25 | 17.31 | 18.97 | 2.80 | 4.50 |
| 09/28 08:00 | 552.26 | 17.31 | 18.98 | 0.70 | 1.70 |
| 09/28 07:00 | 552.27 | 17.31 | 18.98 | 1.00 | 1.00 |
| 09/28 06:00 | 552.28 | 17.31 | 18.98 | 0.00 | 0.00 |
| 09/28 05:00 | 552.29 | 17.04 | 18.98 | 0.00 | 0.00 |
| 09/28 04:00 | 552.30 | 17.32 | 18.98 | 0.00 | 0.00 |
| 09/28 03:00 | 552.31 | 17.32 | 18.99 | 0.00 | 0.00 |
| 09/28 02:00 | 552.32 | 15.66 | 18.99 | 0.00 | 0.00 |
| 09/28 01:00 | 552.34 | 18.99 | 18.99 | 0.00 | 0.00 |
| 09/28 00:00 | 552.34 | 17.33 | 18.99 | 0.00 | 0.00 |
| 09/27 23:00 | 552.35 | 17.33 | 19.00 | 0.00 | 0.00 |
| 09/27 22:00 | 552.36 | 19.00 | 19.00 | 0.00 | 0.00 |
| 09/27 21:00 | 552.36 | 17.06 | 19.00 | 0.00 | 0.00 |
| 09/27 20:00 | 552.37 | 19.00 | 19.00 | 0.00 | 0.00 |
| 09/27 19:00 | 552.37 | 17.33 | 19.00 | 0.00 | 0.00 |
| 09/27 18:00 | 552.38 | 19.00 | 19.00 | 0.00 | 24.10 |
| 09/27 17:00 | 552.38 | 17.33 | 19.00 | 0.00 | 24.10 |
| 09/27 16:00 | 552.39 | 19.00 | 19.00 | 0.00 | 24.10 |
| 09/27 15:00 | 552.39 | 19.00 | 19.00 | 0.00 | 24.10 |
| 09/27 14:00 | 552.39 | 19.00 | 19.00 | 0.00 | 24.10 |
| 09/27 13:00 | 552.39 | 19.00 | 19.00 | 0.00 | 24.10 |
| 09/27 12:00 | 552.39 | 19.00 | 19.00 | 0.00 | 24.10 |
| 09/27 11:00 | 552.39 | 19.00 | 19.00 | 0.00 | 24.10 |
| 09/27 10:00 | 552.39 | 19.00 | 19.00 | 0.00 | 24.10 |
| 09/27 09:00 | 552.39 | 19.00 | 19.00 | 0.00 | 24.10 |
| 09/27 08:00 | 552.39 | 20.67 | 19.00 | 0.00 | 24.10 |
| 09/27 07:00 | 552.38 | 19.00 | 19.00 | 0.20 | 24.10 |
| 09/27 06:00 | 552.38 | 19.00 | 19.00 | 0.00 | 23.90 |
| 09/27 05:00 | 552.38 | 19.00 | 19.00 | 0.00 | 23.90 |
| 09/27 04:00 | 552.38 | 20.67 | 19.00 | 0.00 | 23.90 |
| 時刻 | 貯水位 (m) |
全流入量 (m³/s) |
全放流量 (m³/s) |
10分 雨量 (mm) |
累加 雨量 (mm) |
|---|---|---|---|---|---|
| 09/29 05:30 | 552.20 | 18.96 | 18.96 | 0.60 | 19.10 |
| 09/29 05:20 | 552.20 | 18.96 | 18.96 | 0.70 | 18.50 |
| 09/29 05:10 | 552.20 | 18.96 | 18.96 | 0.50 | 17.80 |
| 09/29 05:00 | 552.20 | 18.96 | 18.96 | 0.10 | 17.30 |
| 09/29 04:50 | 552.20 | 18.96 | 18.96 | 0.00 | 17.20 |
| 09/29 04:40 | 552.20 | 18.96 | 18.96 | 0.50 | 17.20 |
| 09/29 04:30 | 552.20 | 18.96 | 18.96 | 0.40 | 16.70 |
| 09/29 04:20 | 552.20 | 18.96 | 18.96 | 0.30 | 16.30 |
| 09/29 04:10 | 552.20 | 18.96 | 18.96 | 0.00 | 16.00 |
| 09/29 04:00 | 552.20 | 18.96 | 18.96 | 0.40 | 16.00 |
| 09/29 03:50 | 552.20 | 18.96 | 18.96 | 0.50 | 15.70 |
| 09/29 03:40 | 552.20 | 18.96 | 18.96 | 0.10 | 15.20 |
| 09/29 03:30 | 552.20 | 18.96 | 18.96 | 0.00 | 15.10 |
| 09/29 03:20 | 552.20 | 18.96 | 18.96 | 0.50 | 15.10 |
| 09/29 03:10 | 552.20 | 18.96 | 18.96 | 0.40 | 14.60 |
| 09/29 03:00 | 552.20 | 18.96 | 18.96 | 0.20 | 14.20 |
| 09/29 02:50 | 552.20 | 17.29 | 18.96 | 0.00 | 14.00 |
| 09/29 02:40 | 552.20 | 17.29 | 18.96 | 0.00 | 14.00 |
| 09/29 02:30 | 552.20 | 17.29 | 18.96 | 0.00 | 14.00 |
| 09/29 02:20 | 552.20 | 17.29 | 18.96 | 0.40 | 14.00 |
| 09/29 02:10 | 552.20 | 17.29 | 18.96 | 0.60 | 13.60 |
| 09/29 02:00 | 552.20 | 17.29 | 18.96 | 0.00 | 13.00 |
| 09/29 01:50 | 552.21 | 18.96 | 18.96 | 0.00 | 13.10 |
| 09/29 01:40 | 552.21 | 18.96 | 18.96 | 0.00 | 13.10 |
| 09/29 01:30 | 552.21 | 18.96 | 18.96 | 0.00 | 13.10 |
| 09/29 01:20 | 552.21 | 18.96 | 18.96 | 0.20 | 13.10 |
| 09/29 01:10 | 552.21 | 18.96 | 18.96 | 0.20 | 12.90 |
| 09/29 01:00 | 552.21 | 18.96 | 18.96 | 0.50 | 12.70 |
| 09/29 00:50 | 552.21 | 17.29 | 18.96 | 0.20 | 12.20 |
| 09/29 00:40 | 552.21 | 17.30 | 18.96 | 0.00 | 12.00 |
| 09/29 00:30 | 552.21 | 17.30 | 18.96 | 0.00 | 12.00 |
| 09/29 00:20 | 552.21 | 17.30 | 18.96 | 0.20 | 12.00 |
| 09/29 00:10 | 552.21 | 17.30 | 18.96 | 0.20 | 11.80 |
| 09/29 00:00 | 552.21 | 17.30 | 18.96 | 0.00 | 11.60 |
| 09/28 23:50 | 552.22 | 18.97 | 18.97 | 0.30 | 11.60 |
| 09/28 23:40 | 552.22 | 18.97 | 18.97 | 0.20 | 11.30 |
| 09/28 23:30 | 552.22 | 18.97 | 18.97 | 0.10 | 11.10 |
| 09/28 23:20 | 552.22 | 18.97 | 18.97 | 0.20 | 11.00 |
| 09/28 23:10 | 552.22 | 18.97 | 18.97 | 0.00 | 10.80 |
| 09/28 23:00 | 552.22 | 18.97 | 18.97 | 0.20 | 10.80 |
| 09/28 22:50 | 552.22 | 18.97 | 18.97 | 0.60 | 10.60 |
| 09/28 22:40 | 552.22 | 18.97 | 18.97 | 0.10 | 10.00 |
| 09/28 22:30 | 552.22 | 18.97 | 18.97 | 0.00 | 9.90 |
| 09/28 22:20 | 552.22 | 18.97 | 18.97 | 0.00 | 9.90 |
| 09/28 22:10 | 552.22 | 18.97 | 18.97 | 0.00 | 9.90 |
| 09/28 22:00 | 552.22 | 18.97 | 18.97 | 0.00 | 9.90 |
| 09/28 21:50 | 552.22 | 18.97 | 18.97 | 0.10 | 9.90 |
| 09/28 21:40 | 552.22 | 17.30 | 18.97 | 0.00 | 9.80 |
| 09/28 21:30 | 552.22 | 17.30 | 18.97 | 0.00 | 9.80 |
| 09/28 21:20 | 552.22 | 17.30 | 18.97 | 0.00 | 9.80 |
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