Small watershed mountain torrent forecasting and early warning method and device, electronic equipment and storage medium

The invention discloses a small watershed mountain torrent forecasting and early warning method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining time sequence water level data collected by a radar water level gauge in real time, and building a first sample set; initializing the first sample set, and determining a reference value; preprocessing the time sequence water level data according to the reference value and a first threshold value; processing the first sample set to generate a second sample set; correcting the real-time time sequence water level data according to the second sample set and a second threshold value, and updating a reference value; feature value extraction is carried out on all the time sequence water level data in the first sample set, a third sample is generated, and meanwhile sampling processing is carried out on the time sequence water level data in the first sample set to obtain a fourth sample; and if the dispersion degree of the t