This data set is the runoff field data of Qiaogou watershed in the first sub region of Loess Hilly and gully region from 1986 to 1990. The precipitation, runoff and sediment yield of runoff generated by runoff plots of different geomorphic types were observed. The flow field is shown in the table of basic flow field of bridge ditch.
Instrument continuous observation manual observation
1. The observation instruments of secondary rainfall are SM1 ordinary rain gauge with a diameter of 20cm and dsj2 siphon type self recording rain gauge. 2. Different observation facilities are used for runoff and sediment, including triangular weir, triangular groove, water distribution tank and runoff pool. During the runoff production process, the triangular weir and triangular groove collect the sand ocean; the water level of the runoff pool is read immediately after the end of precipitation and runoff, and the runoff is calculated according to the area and water level of the water distribution tank and runoff pool; the mud water of the water distribution tank and runoff pool is stirred evenly to collect sediment Sample (500cm3), sample disposal adopts displacement method.
In the process of integration and input of observation data, there are four levels of manual verification, which are tabulation, primary calibration, re calibration and audit, to ensure the data quality.
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