This dataset contains the water level observation data of point 4 in the encrypted observation of runoff in the middle reaches of the Heihe River from May 20, 2015 to March 11, 2016. The instrument maintenance was reinstalled and debugged on May 20, 2015. The observation point is located at Heihe Bridge in Shangbao Village, Jing'an Township, Zhangye City, Gansu Province. The riverbed is composed of sand and gravel, and the cross-section is unstable. The latitude and longitude of the observation point are N39.065 °, E100.433056 °, with an altitude of 1431 meters and a river width of 58 meters. In 2012, HOBO pressure type water level gauge was used for water level observation, with a collection frequency of 30 minutes; Since 2013, the SR50 ultrasonic rangefinder has been used with a collection frequency of 30 minutes. On June 25, 2014, the instrument was damaged and was repurchased. Recording resumed on May 20th, 2015. The data includes the following parts:
| # | number | name | type |
| 1 | 41531174 | Research on key theories and methods in authenticity verification of land surface remote sensing products | National Natural Science Foundation of China |
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