Mudanjiang City has issued a yellow warning stating that 10 rivers in Heilongjiang Province have exceeded the warning water level and received corresponding rainfall
From 8:00 on August 10 to 8:00 on August 11, there was a general heavy rain to rainstorm in the Suifen River basin, and a partial heavy rain with an average rainfall of 59.8 mm. The average rainfall above the upstream Benloutou Station was 79 mm, and the rainfall of the small Suifen River was 30 mm.
Affected by it, the water level in the upper reaches of Suifen River has rapidly risen. At 8:00 am on the 11th, the water level at the Benloutou Station of Suifen River was 103.10 meters, exceeding the warning by 1.90 meters. The water level at the Xiaosuifen River Station was 95.61 meters, 1.39 meters below the warning level, with a flow rate of 404 cubic meters per second; The water level at Suifenhe Dongning Station is 113.96 meters, which is 0.64 meters lower than the warning water level, with a flow rate of 933 cubic meters per second.
Based on the current rainfall situation, after consultation and analysis by experts from the Mudanjiang Water Bureau and the Mudanjiang Branch of the Heilongjiang Hydrological and Water Resources Center, it is estimated that there may be a significant flood in the Suifenhe River Basin, with a magnitude of 10-20 years. The Dongning section of the Suifen River may experience floods that occur once in nearly 20 years, while the Benloutou section of the Suifen River may experience floods that occur once in nearly 25 years.
According to the "Water and Drought Disaster Warning and Release System" of the Mudanjiang Municipal Water Bureau, the Municipal Water Bureau and the Mudanjiang Branch of the Heilongjiang Hydrological and Water Resources Center issued a yellow warning for river flood disasters at 9:00 am on August 11th. Relevant units and departments in each county and district are requested to prepare for defense.
10 rivers in Heilongjiang Province exceed the warning water level
On the 11th, it was learned from the Hydrology and Water Resources Center of Heilongjiang Province that as of 8:00 am on the 11th, 10 rivers in Heilongjiang Province have exceeded the warning water level, and 3 small reservoirs have operated beyond the flood control limit.
As of 8:00 on the 11th, 10 rivers, including the Ussuri River, Songhua River, Lalin River, Muling River, and Suifen River, exceeded the warning water level by 0.07 to 1.9 meters, with the Suifen River Benloutou Station exceeding the guaranteed water level by 0.45 meters.
At 8:00 on the 11th, the water level at Yilan Station on the main stream of the Songhua River was 96.97 meters, exceeding the warning water level by 0.17 meters, with a corresponding flow rate of 11300 cubic meters per second; The water level at Jiamusi Station on the main stream of Songhua River is 79.39 meters, exceeding the warning water level by 0.09 meters, with a corresponding flow rate of 12500 cubic meters per second; The water level at Hutou Station on the main stream of the Wusuli River is 56.42 meters, 0.38 meters higher than the warning water level, with a corresponding flow rate of 3350 cubic meters per second.
Compared with the same period in previous years, the water level of the Subila River remains basically unchanged; The water levels of 10 rivers, including Hulan River, Ant River, Mudan River, Mulin River, and Suifen River, are slightly higher by 0.5 to 1.76 meters; The water level of seven rivers, including Emur River, Gan River, Huma River, Lalin River, and Nemur River, is 0.2 to 1.19 meters lower.
Affected by rainfall, as of 8:40 am on the 11th, three small reservoirs in Heilongjiang Province have exceeded the flood limit water level by 0.03 to 0.35 meters and are operating at full capacity to discharge floodwater and quickly drop below the flood limit water level. （
